Film specifications#
- Manufacturer
- Kodak
- Film
- Plus-X Pan
- Speed
- 125
- Process
- B&W
- Formats
- 135, 120, 220
- Base
- Triacetate
- Made in
- US
- Status
- Discontinued
Character & history#
Plus-X Pan (PX) and Plus-X Pan Professional (PXP) films are general purpose medium-speed panchromatic films for outdoor or studio photography with extremely fine grain and excellent sharpness. (Originally ASA 50 later ASA 125). PX in 135 format and PXP 120, 220 formats with a retouching surface on the emulsion side.
Description adapted from Wikipedia’s “List of discontinued photographic films” (CC BY-SA 4.0).
Exposure guide at ISO 125#
Sunny 16 for this film: f/16 at 1/125 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 | — | — | 1/1250 s | 1/320 s |
| EV 15 · Bright sun | — | 1/2500 s | 1/640 s | 1/160 s |
| EV 14 · Hazy sun | — | 1/1250 s | 1/320 s | 1/80 s |
| EV 13 · Cloudy-bright | 1/2500 s | 1/640 s | 1/160 s | 1/40 s |
| EV 12 · Overcast / open shade | 1/1250 s | 1/320 s | 1/80 s | 1/20 s |
| EV 10 · Sunset | 1/320 s | 1/80 s | 1/20 s | 1/5 s |
| EV 8 · Bright interior | 1/80 s | 1/20 s | 1/5 s | 0.8 s |
| EV 5 · Home interior at night | 1/10 s | 0.4 s | 1.6 s | 6 s |
| EV 3 · City street at night | 0.4 s | 1.6 s | 6 s | 25 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 62 | Lower contrast, finer grain |
| Push 1 stop | EI 250 | More contrast and grain |
| Push 2 stops | EI 500 | Strong contrast, coarse grain, blocked shadows |
| Push 3 stops | EI 1,000 | 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 125.
- Ilford FP4 Plus ISO 125
- SFL T-25 ISO 125
- SFL T-42 ISO 125
- ADOX CHS 100 II ISO 100
- AgfaPhoto APX 100 ISO 100
- Argenti Pan-X ISO 100
- Film Photography Project BW 100 ISO 100
- Film Photography Project Derev Pan 100 ISO 100
- Film Photography Project Emulsion X ISO 100
- Film Photography Project Let It Snow ISO 100
- Film Photography Project Svema Foto 100 ISO 100
- Film Photography Project Tasma NK-2 ISO 100
- Film Photography Project WolfMan ISO 100
- Film Photography Project X-Ray Film ISO 100
- Film Washi 'F' ISO 100
- Film Washi 'K' ISO 100
- Film Washi 'P' ISO 100
- Film Washi 'V' ISO 100
More Kodak films#
Frequently asked questions#
What ISO is Kodak Plus-X Pan?
125 — set your meter to ISO 125 for box speed.
Is Kodak Plus-X Pan still made?
No, it has been discontinued (1954–2011).
How do I develop Kodak Plus-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 Plus-X Pan available in 35mm?
Yes — formats: 135, 120, 220.
Sources & licences#
- Wikipedia: List of discontinued photographic films — CC BY-SA 4.0
Last updated October 03, 2026 · How we calculate · Sources