Film format
The cartridge, roll or sheet dimensions and the camera designed to hold it.
Berlin Photo Studio · Film formats guide
SIZE CHANGES EVERYTHING.
A film format is more than a cartridge. It changes the camera, frame area, number of photographs, handling, development and the way each image is scanned.
Start here
Format, process and frame size are different questions.
Format describes the physical film system: 135, 120, 110, APS, 220, sheet film or motion-picture film. Process describes the chemistry: C‑41, ECN‑2, black-and-white, E‑6 or Scala. One format may exist in several processes.
The same roll length can also produce different numbers of photographs. A 120 camera may expose 6×4.5, 6×6, 6×7, 6×8, 6×9 or panoramic frames. A half-frame camera uses standard 135 film but fits roughly twice as many images into it.
Frame size
The portion exposed for one photograph. It can vary within the same roll format.
Development process
Determined by the film emulsion—not simply by whether the cassette says 35mm or 120.
The format atlas
Eight ways to hold an image.
Dimensions below are useful nominal references. Actual exposed area, frame count and spacing can vary by camera, film loading and manufacturer.
NOMINAL FRAME · 24 × 36 MM
135
01 · 35MM / 135
The everyday standard
Perforated 35mm still film inside a light-tight metal or plastic cassette. Compact, widely available and supported by an enormous range of cameras.
Typical exposures
24 or 36 are common. Bulk-loaded and hand-loaded rolls may contain a different number.
Cameras
SLRs, rangefinders, compact cameras, reusable cameras and disposables.
Development
Available as C‑41, ECN‑2, B&W, E‑6 and other specialised emulsions.
Scanning
One standard full frame is usually treated as a 3:2 horizontal or vertical image.
APPROX. FRAME · 18 × 24 MM
½
02 · HALF-FRAME
Two photographs in one 35mm frame
Half-frame is not a separate roll stock. The camera exposes approximately half of a standard 135 frame, usually in portrait orientation when the camera is held horizontally.
Typical exposures
Roughly 48 from a 24-exposure roll or 72 from a 36-exposure roll, sometimes more or fewer.
Cameras
Olympus Pen, Canon Demi, Pentax 17 and other half-frame designs.
Development
The chemistry is the same as the 135 film loaded; half-frame mainly changes scanning and frame detection.
Scanning
Each half can be delivered separately. Tell the lab if intentional diptychs should remain paired.
ROLL WIDTH · APPROX. 61 MM
120
03 · 120 MEDIUM FORMAT
One roll, many frame shapes
Medium-format roll film with backing paper. The camera determines the exposed frame dimensions, so “120” alone does not tell you the image ratio or frame count.
Typical exposures
About 15–16 at 6×4.5, 12 at 6×6, 10 at 6×7 or 8 at 6×9. Cameras and loading vary.
Cameras
TLRs, modular SLRs, folding cameras, rangefinders and panoramic cameras.
Development
Commonly available in C‑41, B&W and E‑6; some cinema stocks may be prepared for ECN‑2.
Scanning
More film area per frame, with output proportions determined by 6×4.5, 6×6, 6×7, 6×9 or another gate.
APPROX. FRAME · 13 × 17 MM
110
04 · 110 POCKET FILM
Small cartridge, small negative
Narrow film supplied in a drop-in cartridge. The design made loading simple and cameras very compact, but the small frame requires careful exposure and scanning.
Typical exposures
12 or 24 exposures are common, depending on the cartridge.
Cameras
Kodak Pocket Instamatic, Pentax Auto 110 and many simple pocket cameras.
Development
Current online choices include C‑41 and B&W 110 development.
Scanning
The small image area can make grain, focus and camera limitations more visible at large output sizes.
APS‑H IMAGE AREA · APPROX. 16.7 × 30.2 MM
APS
05 · APS / ADVANTIX
A discontinued cartridge system
Advanced Photo System film lives inside its cartridge before and after exposure. Cameras could record data and select Classic, High-definition or Panoramic presentation crops.
Typical exposures
15, 25 and 40-exposure cartridges were common.
Cameras
Compact APS cameras and APS SLR systems from the late 1990s and 2000s.
Development
Most APS film is C‑41, but the cartridge requires compatible handling. Availability must be confirmed.
Scanning
Older crop instructions may not automatically transfer; ask how full frames and panoramic selections will be delivered.
SAME WIDTH AS 120 · LONGER ROLL
220
06 · 220 MEDIUM FORMAT
More frames, less backing paper
220 uses film of the same width as 120 but with no full-length backing paper and approximately twice the film length. The camera or film back must specifically support it.
Typical exposures
Approximately twice the equivalent 120 count—for example around 24 at 6×6 or 20 at 6×7. Equipment varies.
Cameras
Medium-format systems with a 220 setting, pressure plate position or dedicated back.
Development
Chemistry follows the emulsion, but roll length and handling differ from 120.
Scanning
Frame size follows the camera gate just like 120; there are simply more frames on the roll.
SHEET · NOMINALLY 4 × 5 INCHES
4×5
07 · 4×5 LARGE FORMAT
One sheet, one photograph
Individual sheets are loaded into holders in darkness and exposed one at a time. The usable image is slightly smaller than the physical sheet.
Typical exposures
One exposure per sheet; a standard double-sided holder normally carries two sheets.
Cameras
View cameras, field cameras, press cameras and technical cameras with movements.
Development
Current online service options include 4×5 for C‑41, ECN‑2, B&W and E‑6.
Scanning
A much larger original gives generous area for inspection and printing, but quality still depends on focus, exposure and film condition.
MOTION PICTURE · FRAME APPROX. 4.01 × 5.79 MM
S8
08 · SUPER 8
Film measured in time, not photographs
Super 8 is a motion-picture cartridge system. Hundreds or thousands of tiny sequential frames create movement when projected or digitised at the chosen frame rate.
Typical capacity
A 50-foot cartridge runs roughly 3 min 20 sec at 18 fps or 2 min 30 sec at 24 fps.
Cameras
Dedicated Super 8 movie cameras with cartridge loading.
Development
Process depends on the stock and requires a motion-picture workflow. Confirm the exact cartridge first.
Scanning
Delivered as a moving digital file or frame sequence, not a folder of ordinary still photographs.
Why counts vary: manufacturers may provide extra leader, cameras may begin or finish at different positions, bulk-loaded rolls differ in length, and panoramic or unusual gates consume more film per photograph. Treat exposure counts as typical—not guaranteed.
Side-by-side
Compare the systems quickly.
| Format | Nominal frame / width | Typical capacity | Camera family | Online service status |
|---|---|---|---|---|
| 135 | 24 × 36 mm standard frame | 24 or 36 exposures common | SLR, rangefinder, compact | Direct option |
| Half-frame | Approx. 18 × 24 mm | Approx. 48 or 72 | Half-frame 135 cameras | Direct option |
| 120 | Approx. 61 mm roll width | About 8–16, depending on gate | Medium-format systems | Direct option |
| 110 | Approx. 13 × 17 mm | 12 or 24 common | Pocket cartridge cameras | C‑41 and B&W options |
| APS | 24 mm film; APS‑H approx. 16.7 × 30.2 mm | 15, 25 or 40 common | APS compact and SLR | Contact first |
| 220 | Same width as 120; longer roll | Approx. double 120 | 220-compatible medium format | Contact first |
| 4×5 | Nominal 4 × 5 inch sheet | One image per sheet | View and field cameras | Direct option |
| Super 8 | Approx. 4.01 × 5.79 mm frame | Measured by runtime | Super 8 movie cameras | Contact first |
Negative to file
More film area is not the same as more automatic quality.
A larger negative can record and preserve more image information, but the final result still depends on lens quality, focus, camera movement, exposure, film, development and scanning. A sharp 35mm frame can be more useful than a poorly focused medium-format negative.
File dimensions describe the delivered scan. DPI/PPI mainly becomes meaningful when assigning a print size. Compare scans by pixel dimensions, format and intended use.
Frame detection
Half-frame, panoramic 135, 110 and irregular spacing may require more individual attention than standard 35mm frames.
Aspect ratio
A 6×6 square, 6×7 rectangle and 6×9 frame should not be forced into the same crop. The camera gate defines the original composition.
Intended output
Choose JPEG for convenient finished files or TIFF when you need a larger editing and archival workflow. Keep the physical negative as the original.
Which format should you choose?
Choose for the camera and working rhythm—not prestige.
Choose 135
For many camera choices, more photographs per roll and easy everyday carrying.
Choose half-frame
For diptychs, sequences, travel and a slower cost-per-frame rhythm using ordinary 135 film.
Choose 120
For larger negatives, deliberate composition and multiple frame ratios.
Choose 4×5
For one-sheet-at-a-time work, camera movements and a methodical large-format process.
Match format with chemistry
First identify the film. Then choose development.
A 120 roll may be C‑41, B&W or E‑6. A 135 cassette may contain standard colour film, cinema film or black-and-white. Format alone does not select the process.
COLOUR NEGATIVEC‑41 Development →
Includes current format choices for 135, half-frame, 120, 110 and 4×5.
CINEMA NEGATIVEECN‑2 Development →Includes current format choices for 135, half-frame, panoramic 135, 120 and 4×5.
MONOCHROME NEGATIVEB&W Development →Includes current format choices for 135, half-frame, 120, 110 and 4×5.
COLOUR POSITIVEE‑6 Development →Includes current format choices for 135, half-frame, panoramic 135, 120 and 4×5.
Film format FAQ
Questions before loading or ordering.
Are 35mm and 135 the same thing?
In ordinary still-photography use, yes: 135 is the cartridge format using 35mm-wide perforated film. “35mm” can also describe the film width in cinema contexts, so 135 is the more specific still-film term.
Is half-frame a different kind of film?
No. Half-frame cameras normally use standard 135 film and expose a smaller area for each photograph. Development follows the film emulsion; scanning must recognise the smaller frames.
Why does 120 film have different exposure counts?
120 describes the roll, not one fixed frame gate. A 6×4.5 camera fits more frames on the roll than a 6×9 camera because each photograph uses less film length.
Are 120 and 220 interchangeable?
Not automatically. They have the same film width, but 220 is longer and lacks full-length backing paper. The camera or film back needs the correct pressure and counter system.
Can you develop old APS film?
APS is usually C‑41, but its enclosed cartridge requires compatible handling. Contact the lab with photographs of the cartridge before bringing or mailing it.
Is a 4×5 scan always better than a 35mm scan?
The larger original offers more film area, but a useful image still depends on lens quality, focus, movement, exposure, development and scan setup. Format alone does not guarantee quality.
Can Super 8 be scanned like photographs?
Super 8 is normally digitised as motion footage or an image sequence at a chosen resolution and frame rate. It is a different workflow from scanning a roll of still negatives.
What should I write on my order?
Give the format, exact film stock, process if known, number of rolls or sheets, and whether you need development only or development plus scans. If unsure, send a clear photograph of the film first.
Still unsure?
Show us the cassette, roll or sheet box before choosing.
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