Film specifications#
- Manufacturer
- Kodak
- Film
- Royal-X Pan
- Speed
- 1250
- Process
- B&W
- Formats
- 120, 620, sheet film
- Base
- Triacetate
- Made in
- US
- Status
- Discontinued
Character & history#
Royal-X Pan (RX) is ultra high-speed print film for low light situations that had coarse grain. Due to its coarse-grain it was only sold as medium format and large format film.
Description adapted from Wikipedia’s “List of discontinued photographic films” (CC BY-SA 4.0).
Exposure guide at ISO 1,250#
Sunny 16 for this film: f/16 at 1/1250 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 | — | — | — | 1/3200 s |
| EV 15 · Bright sun | — | — | — | 1/1600 s |
| EV 14 · Hazy sun | — | — | 1/3200 s | 1/800 s |
| EV 13 · Cloudy-bright | — | — | 1/1600 s | 1/400 s |
| EV 12 · Overcast / open shade | — | 1/3200 s | 1/800 s | 1/200 s |
| EV 10 · Sunset | 1/3200 s | 1/800 s | 1/200 s | 1/50 s |
| EV 8 · Bright interior | 1/800 s | 1/200 s | 1/50 s | 1/13 s |
| EV 5 · Home interior at night | 1/100 s | 1/25 s | 1/6 s | 0.6 s |
| EV 3 · City street at night | 1/25 s | 1/6 s | 0.6 s | 2.5 s |
Push & pull options#
Tell your lab how many stops you pushed or pulled so development is adjusted for the whole roll.
| Adjustment | Rate the film at | Effect |
|---|---|---|
| Pull 1 stop | EI 625 | Lower contrast, finer grain |
| Push 1 stop | EI 2,500 | More contrast and grain |
| Push 2 stops | EI 5,000 | Strong contrast, coarse grain, blocked shadows |
| Push 3 stops | EI 10,000 | Strong contrast, coarse grain, blocked shadows |
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 negative film around ISO 1,250.
- Ilford DELTA 3200 ISO 1,000
- Agfa Agfapan 1000 Professional ISO 1,000 · disc.
- Foma Fomapan Variant ISO 1,600 · disc.
- Fujifilm Neopan 1600 Professional ISO 1,600 · disc.
More Kodak films#
Frequently asked questions#
What ISO is Kodak Royal-X Pan?
1250 — set your meter to ISO 1,250 for box speed.
Is Kodak Royal-X Pan still made?
No, it has been discontinued (1956–c1987).
How do I develop Kodak Royal-X Pan?
B&W process. Traditional black-and-white development (e.g. D-76/ID-11, HC-110, Rodinal, XTOL) — easy to do at home.
Is Kodak Royal-X Pan available in 35mm?
Not according to our data — formats: 120, 620, sheet film.
Sources & licences#
- Wikipedia: List of discontinued photographic films — CC BY-SA 4.0
Last updated October 03, 2026 · How we calculate · Sources