Author: Jonas Weber

  • Filters for black and white film

    What filters change

    A filter changes which wavelengths reach the film, so it changes the relative tones in the finished image rather than simply making everything darker. A yellow filter is a useful first choice because it slightly separates blue sky from clouds and can keep distant haze from washing out a landscape. It usually gives a modest effect, which makes it easier to judge than a strong red filter. With the filter off, the scene can look almost the same in color; the negative records the difference in gray values.

    For a gentle start, try a yellow filter on a partly cloudy day and compare frames with and without it. The difference may be small in the viewfinder… Look at the negatives or prints side by side to see how clouds, foliage, and skin tones shift.

    Match the subject

    An orange filter gives more separation between blue sky and clouds, while a red filter can make a blue sky much darker and bright clouds stand out sharply. That stronger effect can suit a dramatic landscape, but it may also make a pale face look unusually light. A blue filter has the opposite tendency, often lightening blue and darkening red; it can make skin look less flattering, so use it for a reason rather than as a default.

    A green filter can separate leaves from darker branches and may bring more detail into some outdoor portraits. Results depend on the subject and the film’s response, so make a short comparison in steady light. As one practical rule, “yellow is a safe start” when you are unsure; stronger filters are easier to assess once you know the look you want.

    Account for exposure

    A filter absorbs some light. Check its marked factor: a factor of two calls for one stop more exposure, while a factor of four calls for two stops. If your camera meters through the lens, it will often compensate when the filter is attached, but confirm the reading before relying on it. With a separate meter, make the adjustment yourself and note it beside the frame.

    When using long exposure on film, apply the filter factor first, then account for the film’s changing response at longer times using the data for that emulsion. For ordinary daylight exposures, a small notebook is enough to track the filter and adjustment. A brief record also helps when archiving negatives: note the filter, the lighting, and any exposure change beside the frame number.

    Carry a useful set

    Start with one yellow filter — then add an orange or red filter only if you often want stronger sky contrast. Check that the filter fits the lens thread without wobbling, and keep a clean lens hood on the camera to reduce stray light. A filter case prevents scratches; fingerprints can lower contrast, so wipe the glass gently with a clean cloth before packing it away.

    If an old filter ring sticks, do not force it; a technician can inspect it during CLA service. Keep notes for a few rolls, then decide which filter earns space in your bag. Two well understood filters are more useful than a full set you rarely reach for.

  • Zone focusing for street photography

    Set the focus distance before raising the camera, then let people enter the sharp zone. With a 28 mm lens at f/8 and focus set around 3 metres, nearby action stays forgiving. Check your lens scale against a distant sign first. In busy streets, keep the camera ready and choose a distance you can judge consistently.

  • Shooting film at night

    Begin with the available light

    Night scenes often look brighter to the eye than they do on a negative. Your eyes keep adjusting as you walk from a lit shopfront into a dark lane, while the film records one fixed exposure. Before setting anything, decide what should carry the picture: a face near a doorway, the warm windows of a bus, or the blue outline of a building. That choice keeps you from trying to make every corner equally bright. I usually take a moment to let my eyes settle, then frame the brightest and darkest areas deliberately.

    Look for light that falls on a subject rather than pointing the lens straight at a lamp. A pool from a streetlight, an open doorway, or a shop window can give a person a readable face while the background stays dark. If you want the lamps themselves, leave room around them; their glow will spread across nearby tones. A small notebook helps record where you stood and what the scene looked like. Even storing film in a cool, dry cupboard between outings is easier than leaving rolls in a warm car.

    Meter for the subject

    An in-camera meter can be led astray by a bright sign against a large dark street. Aim it at the part of the scene whose detail matters, or fill the frame with that area briefly, then return to your composition. For a face by a window, measure the lit cheek rather than the window itself. If your camera offers manual settings, note the suggested reading and choose how much shadow detail to keep. A dark background need not be lifted to middle gray; leaving it dark often preserves the feeling of night.

    Make a small bracket when the scene cannot be repeated. A useful sequence is 1, 2, and 4 seconds — each frame gives you one stop more light, so the set shows how much shadow detail the film can hold. At exposures around a second or longer, consult the manufacturer’s data for that particular emulsion; some films need extra time beyond the meter’s estimate. Keep notes on the setting and lighting, not just the frame number. If you are watching the cost per frame, three considered exposures usually teach more than a dozen guesses.

    Keep the camera still

    For exposures lasting several seconds, a tripod makes more difference than a very steady grip. Set its legs firmly, keep the center column low, and use a cable release or the camera’s timer so pressing the button does not nudge the frame. On a railing or bench, tuck a folded scarf under the camera and check that it cannot slide. Turn off stabilization if the camera manual says it can cause movement while mounted. A passing car may still paint a bright streak across the picture; decide whether that motion belongs there.

    People are harder than buildings because they rarely hold still. Ask a friend to pause, lean against a wall, and keep both feet planted; even then, a one second exposure can soften hands or eyes. Try a faster setting and accept a darker background, or wait for a steady patch of light to reach the face. Some photographers like the quiet handling of rangefinder cameras, but the useful part is being able to focus accurately in dim conditions, not the style of the body. Check focus before the street gets darker.

    Watch color and finish

    Street lighting can make a scene shift toward orange, green, or a mixture that looks stranger on film than it did in person. Mixed sources are often part of the charm, so do not correct every cast automatically. If skin is important, move the subject near one source of light rather than between a window and a ceiling lamp. Color temperature varies; check the film maker’s notes before carrying a filter, and remember that a filter takes away light. Keep the reminder “meter the wall, not the bulb” in mind when a bright lamp is pulling your attention.

    Before leaving, write down the frames that were made under streetlights and the estimates you used. When the roll comes back, compare those frames with your notes instead of judging each one alone; the useful lesson might be that your meter consistently underexposed dark scenes, or that a certain light source gave faces an unpleasant tint. Night work improves by repeating a few kinds of scene and changing one setting at a time. Keep a spare battery warm in an inside pocket, and check the camera’s meter before the walk. The first frame after sunset may be the easiest; later, your eyes and habits both need a reset…

  • Push processing film by one stop

    What one stop means

    Pushing by one stop means rating a roll at twice its marked sensitivity, then asking for longer development to compensate. A roll marked ISO 400 is exposed as ISO 800; ISO 200 becomes ISO 400. The camera records one stop less light than the manufacturer’s rating suggests, and processing raises contrast to bring the negatives to useful density. The shadows, however, receive less exposure.

    It is a decision made before and during exposure, not a rescue switch applied afterward. In dim conditions, setting the meter to ISO 800 can allow a faster shutter time or a smaller lens opening at the same shutter time. It cannot restore shadow detail that never reached the emulsion. Expect stronger contrast and thin shadows, especially in scenes with deep blacks.

    When to use it

    Push processing can help when the light is fading and you need a faster shutter time to hold a moving subject still. It can also help when you want to use a smaller lens opening for more depth of field. The tradeoff is less detail in dark areas and a more pronounced difference between shadows and highlights. Low light — especially dim indoor light — makes that tradeoff easy to see.

    For a first roll, choose a scene with a range of tones rather than one dominated by bright windows or deep shade. Keep your chosen exposure setting for the whole roll; changing it frame by frame does not change how the roll must be processed. A one stop push is a modest adjustment, but it still affects every frame. The first roll may surprise you…

    Tell the processor clearly

    At the counter, state the film’s marked speed, the speed you used, and the requested push. For example: “ISO 400 film, exposed at 800, push one stop.” Write the same instruction on the processing envelope. Do not just give the faster speed, since that may be mistaken for the film’s marked rating. If exposures varied widely, mention that too.

    If you already know the patience involved in developing film at home, use a published time for your exact developer, dilution, and temperature; there is no reliable universal percentage to add. Unlike stand development, a one stop push needs controlled timing and consistent agitation. Keep the temperature steady, and change only one variable as you learn.

    Judge the result

    After processing, look for open shadows and readable highlights, not simply a dark or light overall negative. A clip test on a small scrap can show whether fixer is clearing film promptly; if clearing takes much longer than it did with fresh solution, replace the fixer. This check is separate from the longer development used for a push.

    Keep notes on the roll, exposure setting, processing time, temperature, and the results you see in the finished images. If the shadows are too empty, give the next roll more exposure instead of asking for a stronger push. If the highlights are too dense, try a gentler scene or a shorter push. Small, recorded changes make it easier to tell which adjustment helped.

  • Archiving negatives

    Start with clean sleeves

    Begin with the negatives themselves. Handle a strip by its edges, over a clean table, and keep food, drinks, and open windows elsewhere. A soft blower can lift loose dust; avoid wiping a dry strip, since grit can scratch the image side. If fingerprints are already present, don’t improvise with household cleaner. Put the strip aside and ask a conservator or experienced archive worker how to treat it. A few minutes of careful handling now prevents small marks from becoming permanent.

    Use sleeves made from uncoated polyester, polypropylene, or polyethylene, not soft vinyl. Check seams and openings: a negative should slide in without catching, but should not rattle around. Cut strips only with clean scissors and leave enough material at both ends to grip them. For a roll that has already been cut, preserve the order rather than reshuffling frames by subject. Advice about storing film often focuses on unopened rolls; processed negatives need the same cool, steady conditions, plus protection from dust and handling.

    Label each group

    Give each roll a short identifier before it disappears into a box. Write the date, place, camera, and any unusual notes on a paper slip rated for archival use, then keep the slip beside the sleeve rather than inside it. When loading film, a small note about the roll number can save guesswork later, especially if several rolls came along on one outing. Use pencil or an archival pen on the outer sleeve only; ink on the negative or its paper wrapper can transfer with warmth.

    Keep strips in frame order and mark the first frame clearly. If the sequence matters, number each sleeve and write down any skipped or blank frames without trimming them away. A contact printing frame can be useful for comparing a small group of selected negatives, but the archive should still retain every frame in its original sequence. Add a simple key that explains your numbering system, such as roll 24, sleeve 3, frames 13 through 18. Consistent labels matter more than an elaborate catalog that is abandoned after a month.

    Choose a steady place

    Choose a dark closet inside the house, away from a radiator, exterior wall, sink, or laundry area. Aim for a stable temperature around 15 to 21 C and relative humidity near 30 to 50 percent; avoid repeated swings more than a perfect number. A cool, dry room is more useful than a cold shed that warms each afternoon. Unopened stock may call for different handling, but filed negatives should not be moved between cold storage and warm air without time to adjust.

    If you keep a few transparencies in slide mounts for occasional viewing, place them in their own labeled sleeves rather than mixing them with ordinary strips. Avoid cardboard that smells musty, plastic bags that trap moisture, and boxes that have held household chemicals. A plain archival box — not a ring binder — protects the strips while letting you lift out one sleeve at a time. Leave a little room in the box so the contents do not bow, but do not let sleeves slump or crease.

    Make retrieval easy

    Make a basic inventory in a notebook or spreadsheet. List each box, sleeve range, and storage location; leave a column for notes about prints, family names, or missing frames. Keep a second copy of the inventory in a different room or on a separate drive, so a single leak or misplaced box does not erase your map. Do not write on the back of a negative to identify it. If a sleeve must be moved, return it to its numbered place before sorting the next one. This small routine keeps a collection searchable without making handling a daily task.

    Every year or two, inspect the sleeves without taking every strip out. Look for curling, sticky surfaces, faded labels, or a vinegar odor in older acetate material. If several strips smell strongly or begin to buckle, isolate their sleeves from the rest and seek advice from a photographic materials conservator; don’t seal them airtight. Replace damaged sleeves one at a time, keeping the old labels with their contents until the new entry is checked. A useful rule is, “If a sleeve feels tacky, replace it.” The point is not to make a museum system, but to preserve enough order that a frame can be found years from now… even after details of the trip have faded.

  • Planning a photo walk

    Choose a compact route

    Pick a walk that fits into an hour or two, then mark three or four places worth pausing. A market entrance, a footbridge and a row of shop windows give you different shapes and light without turning the outing into a march. Keep the route small enough to repeat if the weather shifts. One familiar block can offer more than a long list of locations, especially when you arrive before the street gets busy.

    Give each stop a simple purpose: look for reflections at the bridge, strong shadows beside a wall, or people moving through a doorway. If a companion has a first film camera, agree on a loose meeting point rather than trying to direct every picture. A small notebook helps you remember which turn led to a useful view. Write down the time and a few words, not a full description.

    Read the day’s light

    Check the forecast and the time of sunset before leaving, but use them as a guide rather than a schedule. Overcast skies soften faces and painted walls; clear afternoon sun makes sharper shadows that can be hard to place. Walk the route once without taking pictures if you have time. Notice where the sun falls, which corners stay shaded and where a bright window might become a distraction.

    Think about how long you want to stay at each stop. Film gives you a reason to look twice before pressing the shutter, while instant film makes a handy contrast when you want to see a picture right away. Try waiting for one small change — a cyclist crossing the light or a curtain lifting in an open window. As a note to yourself, write, “Stay until the light changes.”

    Pack for the pace

    Take the camera you already know, a spare roll, and a bag that leaves your hands free. Check that the battery works and that the strap sits comfortably over a coat or shirt. A lens cloth and a small bottle of water are useful on longer walks. Keep your belongings together before setting out; rummaging in the middle of a busy pavement can make you miss the moment you stopped for.

    Choose clothes for standing still as well as walking. A light layer is useful when a shaded street feels cooler than the sunny route you planned. If you are carrying a small notebook, jot down the frame number beside a location or an idea. Later, those brief notes can bring back the reason you made the picture, even if the details seemed obvious at the time.

    Leave a little room

    A route works best when it allows detours. A press photographer on assignment may have to follow a changing scene, but a personal walk can leave space for an unexpected patch of light or an open gate. Give yourself ten unplanned minutes near the end. If nothing catches your eye, sit somewhere and watch how people use the place. That pause often resets your attention better than adding another destination.

    If you hope to continue after sunset, choose a safe route home and decide in advance whether the changing conditions suit your camera. Plans for night photography on film involve slower work and more uncertainty, so make that a separate intention rather than an afterthought. Otherwise, finish while you still have enough light to find your way comfortably. A few considered frames and a quiet walk home are a good result…

  • Testing your darkroom safelight

    Test the lamp in place

    A safelight is not automatically safe because it glows red or sits high on the wall. Its wavelength, brightness, distance from the paper, and the paper’s own sensitivity all matter. A lamp that behaved well with one box of paper may fog another, especially if the product or paper finish changes. Check the paper maker’s instructions first; note the recommended lamp color and minimum distance. This test answers a narrower question: whether your actual room, lamp, and working routine leave a visible veil on the paper. It takes one sheet and a few minutes, and it is worth repeating after moving the lamp or replacing its bulb.

    Reading time4 min
    LevelIntermediate
    First published2025-06-24

    Keep the lamp in its normal position and switch off every other light, including indicator lamps if practical. Let your eyes adjust for several minutes, but do not treat a dim looking room as proof of safety. The eye adapts quickly — photographic paper continues to respond. Keep the paper in its usual tray or easel location during the check, since distance and angle matter. If you usually lift a sheet to inspect it, include that motion in the test rather than checking only the work surface.

    Build a simple comparison

    Use paper from the pack you are currently using, and cut a piece large enough for four or five bands. Under the safelight, place it emulsion side up on a clean, dry surface. Cover it with an opaque card, leaving a narrow band exposed; keep a small corner beneath a second card as a control. Start a timer. Every 30 seconds, slide the first card far enough to uncover another band, while keeping the earlier exposed bands uncovered. After two minutes, the first band has had two minutes of light and the later bands progressively less. Keep the control covered throughout. The layout need not be pretty, but label nothing on the paper itself.

    Process the piece exactly as you process a normal sheet: same developer, stop bath, fixer, and wash. Keep the timing and agitation consistent with your usual work. Make a second, fully covered piece if you want to distinguish safelight fog from a processing issue. Let the paper dry before judging it; wet paper can look darker and glossier than it will later.

    Judge the paper honestly

    Take the dry sample into ordinary room light and compare each band with the protected corner. Look for a gray cast or gradual darkening toward the band that received the longest exposure. A clear boundary is useful, but a faint veil can be easy to miss… hold the paper at an angle and compare neighboring areas, not your memory of how white the sheet looked before. With binocular vision, comparing two adjacent areas is more dependable than trying to recall a shade seen a few minutes earlier. A useful pass means no visible change after at least twice the longest period you normally leave paper exposed.

    If the change appears only in the longest exposed band, the lamp may be acceptable for quick handling but not for a long setup. Make a fresh sample and test the actual longest time, including pauses while you focus or arrange paper. One short check is not a guarantee for every product: papers can differ in their response to the lamp. A yellow filter on the camera changes the tones recorded from a scene, but it does not shield paper from safelight exposure. This is a separate paper sensitivity question, not a camera setting.

    Correct the cause

    Change one variable at a time. Move the lamp farther away, reduce its brightness if the manufacturer allows it, or use only the lamp color specified for the paper. Do not improvise with colored plastic or a bulb of unknown type; a pleasing red appearance is not a reliable measure of what reaches the paper. Repeat the same timed comparison after each change. If a sample stays clear for four minutes but your normal routine sometimes takes six, test the six minute interval before trusting it.

    Keep the work area predictable: a fixed lamp position, a marked place for trays, and a habit of returning unused sheets to their box promptly. Changing shutter speed and aperture affects the camera exposure, while shutter capping can make an uneven negative; neither explains a paper sample that darkens under the lamp. If the comparison is clean, write down the paper type, bulb, distance, and safe working time in your darkroom notes. Repeat after changing any one of them. A record such as “clear at four minutes, lamp 1.5 metres away” is more useful than simply calling the safelight safe.

  • Making contact sheets

    Gather the materials

    A contact sheet is a quick record of an entire roll: each frame sits in sequence, so gaps and repeated compositions show up before you spend time on individual prints. It is a working map — not a miniature portfolio. Most sheets are made by laying cut negative strips emulsion-side down on photographic paper, then exposing the whole area briefly under an enlarger. The result is small but clear enough to compare framing, focus, and the shift of light across a scene.

    Set out a clean carrier or flat glass, paper, a timer, and a pencil before you begin. Keep the negatives in their original order; if a strip gets turned around, the sequence becomes harder to read. A clean sleeve can hold each strip while you work, but keep dust away from the emulsion. Small specks print as sharp white marks and are easy to mistake for flaws in a frame. Handle the paper by its edges, and make a note of which roll you are printing before the sleeves get mixed up.

    Arrange the negatives

    Cut the roll into strips that fit your carrier, usually five or six frames at a time, and place them in reading order. Keep a small gap between strips if the carrier allows it; adjoining edges can overlap and make neighboring frames difficult to judge. If you are using glass, wipe both sides first and check for dust at an angle. The strips should lie flat, with the emulsion side touching the paper. A corner that lifts even slightly can soften the edges of several frames.

    Place the paper emulsion-side up on the baseboard, arrange the strips over it, then lower the glass carefully so nothing shifts. Set the enlarger head high enough to cover the whole sheet evenly, and focus on the surface of the negatives. Turn off the enlarger while you make adjustments. For narrow strips, a simple card mask can keep the edges aligned; label the back of each sheet after processing, rather than writing over the image area.

    Choose an exposure

    Exposure varies with the enlarger, paper, and density of the negatives, so begin with a small trial on scrap paper. Cover part of the paper with an opaque card, uncover another section every two seconds, and make a short exposure at each step. Process the scrap as you will the finished sheet and compare it after it has dried. Choose the briefest exposure that gives readable detail in both the clearest and densest frames. Once you have a useful setting, keep the enlarger height and aperture unchanged.

    Make one full sheet, then let it dry before judging contrast; a wet print can look darker than it will later. If the whole row looks muddy, check that the strips are clean and correctly placed before changing exposure. A clip test with a small piece of unprocessed film can confirm that the fixer clears it promptly. When negatives are especially dense, try a slightly longer exposure, but change one variable at a time so you know what improved the result.

    Read the contact sheet

    Look at the sheet in even room light and compare neighboring frames, not just the apparent sharpest one. A portrait film stock may hold skin tones distinctly beside a bright window, while another choice may suit a shaded scene better. With film grain explained as texture rather than damage, the small print also helps distinguish a naturally rough-looking frame from one that is simply out of focus. Ask, “Which frame tells the story?” The answer is often the one with a clear gesture or arrangement, not the most dramatic light.

    Circle promising frames lightly on the back, and note any changes you want to make when printing them larger. If you have used washing soda and vitamin C in a coffee-based developer, keep those negatives separate from this batch; different processing can change contrast and make comparisons misleading. Add the roll identification and printing date in pencil, then return the strips to their labeled sleeve. The sheet need not be perfect. It should make the next decision easier… and keep the whole roll legible at a glance.

  • Scanning negatives with a digital camera

    Build a steady copy setup

    Digital camera scanning turns developed strips into files without a dedicated scanner, but the camera must be square to the film and the light must be even. Put the camera on a copy stand or a tripod aimed straight down, with the negative centered below it. A copy stand is convenient — a stable shelf and tripod can work if you check alignment from both sides. Use a macro lens if available; close focusing with a standard lens can leave the corners soft.

    [sdm_callout type=”tip”]Last checked by the editors in 2025.[/sdm_callout]

    Start with one frame and fill most of the camera view without cutting off the edges. At 24 megapixels, a well focused capture gives room to crop and retouch dust. Set the camera to manual focus and magnify the preview on the film grain, not the carrier. Turn off image stabilization on a locked setup, and use a two second timer or a remote release so pressing the button does not shake the camera.

    Keep the strip flat

    Hold the film in a carrier made for copying, or sandwich it gently between clean glass and a flat support. A curled strip changes focus from one edge to the other, so give it a few minutes to settle before capturing. Orient the emulsion toward the camera, where the image layer will be sharpest. Use a blower for loose dust; avoid wiping the surface unless you know the material can take it.

    Place a diffuse LED panel behind the film, ideally around 5000 K, and check for bright spots or uneven corners. A sheet of opal acrylic between the panel and the carrier can smooth the illumination. A filter factor belongs to the original camera exposure when a filter was used; it does not change how bright the backlight should be now. Before scanning, inspect the strip under neutral light. If fixer exhaustion was possible during processing, look for milky patches or uneven staining; a camera can record them accurately but cannot remove them.

    Capture repeatable files

    Set ISO to 100, then choose an aperture around f/5.6 or f/8 for a sharp, even frame. Adjust the exposure time until the brightest clear border is bright but not clipped. The histogram is a useful check, though the preview may look strange because the camera is photographing a negative. Save RAW files, keep white balance fixed for the whole roll, and switch off automatic contrast or sharpening.

    Once home from a photo walk, capture a blank or clear portion of the strip as a reference if one is available. Keep a small border around each frame so the inversion software can estimate the film base. Use the same camera position and panel brightness throughout a roll; consistent files are easier to correct than a set of individually adjusted captures. Record the frame number as you go, especially if several strips are on the table.

    Invert and inspect

    Color negatives carry an orange mask, so a simple image inversion usually leaves a strong cast. Use software that can set the base color from a clear part of the strip, then adjust brightness and color balance while looking at skin, neutral objects, and the darkest areas. Black and white negatives are more direct: invert, set the black and white points, and make modest contrast changes. Avoid letting automatic corrections treat every frame as a separate scene.

    Check the result at 100 percent for missed dust, soft corners, and clipped highlights. A small amount of retouching is often enough; heavy sharpening makes dust and texture look harsh. Give files a clear frame number and keep the unedited RAW beside the finished copy. The first test frame may look odd… that is a normal part of adjusting inversion and color. As a simple reminder, I write “keep the edge clean” on a scrap of paper beside the stand.

  • Pinhole photography

    How the opening works

    A pinhole camera needs no glass lens; the image forms when light passes through a small opening and spreads onto film or photographic paper. The simplicity is useful, but the opening has to be small enough to keep the image crisp and large enough to admit light. For a camera with a 25-millimeter distance from hole to material, a hole near 0.2 millimeter across is a sensible starting point. That gives roughly f/125. The result is less a miniature lens than a controlled opening — simple, but sensitive to small errors.

    [sdm_callout type=”tip”]Last checked by the editors in 2025.[/sdm_callout]

    That distance, often called the focal length, also affects framing. A 25-millimeter camera sees a wide area, so a nearby tree or cup can fill much of the picture while distant buildings stay small. There is usually no viewfinder to show exact edges. Before exposing anything, point the camera at a few scenes and note how much of each one fits. A cardboard rectangle held at arm’s length can serve as a rough guide. Keep the sun out of the opening unless you want a pale flare across the image.

    Build a steady body

    A clean metal tin or a small cardboard box makes a workable body. Paint the inside matte black, or line it with black paper, to reduce reflections. Make the hole in thin foil rather than in the thicker wall: press a fine needle through gently, then smooth the foil flat and inspect the opening against a bright window. A round, burr-free hole matters more than a perfectly precise measurement. Tape the foil over a larger opening in the body, and cover every seam that could admit stray light.

    The photographic material must sit flat opposite the hole, with its sensitive side facing inward. A small curved back can help keep paper from lifting at the edges. For roll film, check that the film leader lies flat as it passes the gate and that the spool turns without tugging; a crooked strip may partly cover the image area. Make the camera easy to open and close in dim surroundings, and mark the hole’s position on the outside so you can aim it without touching the foil.

    Set exposure by testing

    Pinhole exposures are often measured in seconds rather than fractions of a second. A phone light meter can give a starting estimate if you enter the camera’s approximate f-number, but treat the result as a guess. If it suggests one second, make a first exposure of one second and another of two or four seconds. A hand covering the opening can act as a simple shutter; lift it cleanly, keep your hand clear of the hole, then cover it again. A small clamp or a hinged flap can be more repeatable.

    For a route with just a few planned subjects, shooting a single roll keeps the tests manageable and makes it easier to compare frames. Write down the scene, the estimated time, and the actual exposure beside each frame number. If you are pushing Tri-X by one stop, mention that clearly when you send the roll for processing, since the change affects both exposure and the way it is treated afterward. For paper, start with a brief test strip of exposures; bright midday scenes may need seconds, while shade can take considerably longer.

    Read the finished print

    A pinhole image usually has softer detail toward the edges, generous depth of field, and a slightly dreamlike perspective. Small subjects can look unexpectedly sharp when the camera is steady. If every frame is pale, shorten the exposure or make the opening smaller; if everything is dense, give less time. Change only one variable between tests. A tripod or a bag set on a wall helps prevent the whole scene from smearing. With paper negatives, reversing tones for a positive print takes another step, so keep the original test notes with the sheets.

    Expect some unevenness. A hole that is oval or ragged can soften one direction more than another, and a loose back may shift the paper during exposure. Look closely at a few results before remaking the camera. A small label with the date and camera dimensions can be useful if you display a print; the photo credit line might read, “Pinhole photograph made with a 25-millimeter camera.” The first result may be blank or too dark… that is still useful information. Adjust the timing, check the hole once more, and try the same scene again.