Film specifications#
- Manufacturer
- Foma
- Film
- Fomapan R 100
- Speed
- 100
- Process
- B&W
- Formats
- 135-36, 30.5m
- Base
- Polyester (PET)
- Made in
- Czech Rep.
- Status
- In production
Character & history#
B&W reversal film, intended for B&W motion picture movie making (Cine film) and also converted for still camera use. Processing available through DR5 (USA) or Photo Studio 13 (DE) or using Foma Direct Reversal Kit.
Description adapted from Wikipedia’s “List of photographic films” (CC BY-SA 4.0).
Exposure guide at ISO 100#
Sunny 16 for this film: f/16 at 1/100 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 | — | — | 1/1000 s | 1/250 s |
| EV 15 · Bright sun | — | 1/2000 s | 1/500 s | 1/125 s |
| EV 14 · Hazy sun | — | 1/1000 s | 1/250 s | 1/60 s |
| EV 13 · Cloudy-bright | 1/2000 s | 1/500 s | 1/125 s | 1/30 s |
| EV 12 · Overcast / open shade | 1/1000 s | 1/250 s | 1/60 s | 1/15 s |
| EV 10 · Sunset | 1/250 s | 1/60 s | 1/15 s | 1/4 s |
| EV 8 · Bright interior | 1/60 s | 1/15 s | 1/4 s | 1 s |
| EV 5 · Home interior at night | 1/8 s | 0.5 s | 2 s | 8 s |
| EV 3 · City street at night | 0.5 s | 2 s | 8 s | 30 s |
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.
Similar films#
Other black-and-white slide film around ISO 100.
- Argenti Scale-X ISO 100
- Foma Inverzní Fomapan 21 / Fomapan R 21 ISO 100 · disc.
- ORWO UP 22 ISO 125 · disc.
More Foma films#
Frequently asked questions#
What ISO is Foma Fomapan R 100?
100 — set your meter to ISO 100 for box speed.
Is Foma Fomapan R 100 still made?
Yes, it is currently in production (1998-).
How do I develop Foma Fomapan R 100?
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 Fomapan R 100 available in 35mm?
Yes — formats: 135-36, 30.5m.
Sources & licences#
- Wikipedia: List of photographic films — CC BY-SA 4.0
Last updated October 03, 2026 · How we calculate · Sources