Film specifications#
- Manufacturer
- Kodak
- Film
- Technical Pan
- Speed
- 25
- Process
- B&W
- Formats
- 135, 120, 4"x5"
- Base
- T/P
- Made in
- US
- Status
- Discontinued
Character & history#
An ultra-high definition high-contrast microfilm emulsion that was made panchromatic through the addition of sensitizing dyes. Special developer is needed to tame the extreme contrast for use in pictorial photography. Type 2415 in 135 and 4-inch x 5-inch sizes with 4-mil (P) base with light piping suppressing layer and 6415 Film in 120 size with a 3.6-mil (T) base. (TP)
Description adapted from Wikipedia’s “List of discontinued photographic films” (CC BY-SA 4.0).
Exposure guide at ISO 25#
Sunny 16 for this film: f/16 at 1/25 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 | 1/60 s |
| EV 15 · Bright sun | 1/2000 s | 1/500 s | 1/125 s | 1/30 s |
| EV 14 · Hazy sun | 1/1000 s | 1/250 s | 1/60 s | 1/15 s |
| EV 13 · Cloudy-bright | 1/500 s | 1/125 s | 1/30 s | 1/8 s |
| EV 12 · Overcast / open shade | 1/250 s | 1/60 s | 1/15 s | 1/4 s |
| EV 10 · Sunset | 1/60 s | 1/15 s | 1/4 s | 1 s |
| EV 8 · Bright interior | 1/15 s | 1/4 s | 1 s | 4 s |
| EV 5 · Home interior at night | 0.5 s | 2 s | 8 s | 30 s |
| EV 3 · City street at night | 2 s | 8 s | 30 s | > 1 min |
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 12 | Lower contrast, finer grain |
| Push 1 stop | EI 50 | More contrast and grain |
| Push 2 stops | EI 100 | Strong contrast, coarse grain, blocked shadows |
| Push 3 stops | EI 200 | 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 25.
- Film Photography Project Eastman Kodak Hi-Con 2369 ISO 25
- Film Photography Project Sonic 25 BW Film ISO 25
- Film Washi 'W' ISO 25
- Rollei Blackbird ISO 25
- Rollei Ortho 25 Plus ISO 25
- Rollei RPX 25 ISO 25
- Silberra S25 ISO 25
- ADOX CMS 20 II PRO ISO 20
- Argenti Nanotomic X ISO 32
- SPUR DSX ISO 32
- Agfa Agfaortho 25 Professional ISO 25 · disc.
- Agfa Agfapan 25 Professional ISO 25 · disc.
- Agfa Agfapan APX 25 ISO 25 · disc.
- Efke KB 25 / R 25 / PL 25 M ISO 25 · disc.
- Foma Mikropan 15 ISO 25 · disc.
- ORWO NP 15 ISO 25 · disc.
- ORWO PAN 25 ISO 25 · disc.
- ADOX KB 14 / R 14 ISO 20 · disc.
More Kodak films#
Frequently asked questions#
What ISO is Kodak Technical Pan?
25 — set your meter to ISO 25 for box speed.
Is Kodak Technical Pan still made?
No, it has been discontinued (c1984–2004).
How do I develop Kodak Technical 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 Technical Pan available in 35mm?
Yes — formats: 135, 120, 4"x5".
Sources & licences#
- Wikipedia: List of discontinued photographic films — CC BY-SA 4.0
Last updated October 03, 2026 · How we calculate · Sources