Film specifications#
- Manufacturer
- Foma
- Film
- Dokument K
- Speed
- 2
- Process
- B&W
- Formats
- 135-36, sheet film
- Base
- Triacetate
- Made in
- Czechoslovakia
- Status
- Discontinued
Character & history#
Microfilm film for making negative copies of documents, other uses include black and white slides and title cards.
Description adapted from Wikipedia’s “List of discontinued photographic films” (CC BY-SA 4.0).
Exposure guide at ISO 2#
Sunny 16 for this film: f/16 at 0.5 s in bright sun. Negative film tolerates 2–3 stops of overexposure; slide film needs accuracy within about ⅓–½ stop.
| Light | f/2 | f/4 | f/8 | f/16 |
|---|---|---|---|---|
| EV 16 · Snow / beach, bright sun | 1/320 s | 1/80 s | 1/20 s | 1/5 s |
| EV 15 · Bright sun | 1/160 s | 1/40 s | 1/10 s | 0.4 s |
| EV 14 · Hazy sun | 1/80 s | 1/20 s | 1/5 s | 0.8 s |
| EV 13 · Cloudy-bright | 1/40 s | 1/10 s | 0.4 s | 1.6 s |
| EV 12 · Overcast / open shade | 1/20 s | 1/5 s | 0.8 s | 3.2 s |
| EV 10 · Sunset | 1/5 s | 0.8 s | 3.2 s | 13 s |
| EV 8 · Bright interior | 0.8 s | 3.2 s | 13 s | 1 min |
| EV 5 · Home interior at night | 6 s | 25 s | > 1 min | > 1 min |
| EV 3 · City street at night | 25 s | > 1 min | > 1 min | > 1 min |
Long exposures#
Most films suffer reciprocity failure beyond about 1 second: they need more exposure than the meter says. As a rule of thumb add ⅓–1 stop for 1–10 s and 1–2 stops beyond 10 s for older emulsions; modern T-grain films (and Fuji Acros) need much less. Check the manufacturer's datasheet.
More Foma films#
Frequently asked questions#
What ISO is Foma Dokument K?
2 — set your meter to ISO 2 for box speed.
Is Foma Dokument K still made?
No, it has been discontinued (1984–c1990).
How do I develop Foma Dokument K?
B&W process. Traditional black-and-white development (e.g. D-76/ID-11, HC-110, Rodinal, XTOL) — easy to do at home.
Is Foma Dokument K available in 35mm?
Yes — formats: 135-36, sheet film.
Sources & licences#
- Wikipedia: List of discontinued photographic films — CC BY-SA 4.0
Last updated October 03, 2026 · How we calculate · Sources