Film specifications#
- Manufacturer
- Kodak
- Film
- Ektar 25
- Speed
- 25
- Process
- C-41
- Formats
- 135, 120
- Base
- Triacetate
- Made in
- US
- Status
- Discontinued — replaced by Royal Gold 25
Character & history#
Professional-grade color film launched at Photokina in 1988 with ultra fine grain, intended to provide the enhanced color saturation and high acutance associated with color slide emulsions. 135 format discontinued in 1994 and renamed Royal Gold. (CK)
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 color negative film around ISO 25.
- Gevaert Gevacolor N5 ISO 25 · disc.
- Kodak Kodacolor ISO 25 · disc.
- Kodak Royal Gold 25 ISO 25 · disc.
- Agfa Agfacolor CN14 ISO 20 · disc.
- Agfa Agfacolor Negativfilm T ISO 20 · disc.
- Agfa Agfacolor Negativfilm K ISO 32 · disc.
- Foma Fomacolor Negativ ISO 32 · disc.
- Foton Fotoncolor NS ISO 32 · disc.
- Fujifilm Fujicolor Negative ISO 32 · disc.
- Fujifilm Fujicolor Negative Film Type L ISO 32 · disc.
- Ilford Colorprint ISO 32 · disc.
- Ilford Ilfocolor ISO 32 · disc.
- ORWO NC 16 ISO 32 · disc.
- ORWO NK 16 ISO 32 · disc.
More Kodak films#
Frequently asked questions#
What ISO is Kodak Ektar 25?
25 — set your meter to ISO 25 for box speed.
Is Kodak Ektar 25 still made?
No, it has been discontinued (1989–1997).
How do I develop Kodak Ektar 25?
C-41 process. Standard colour-negative chemistry available at almost every lab and in home kits (Tetenal/Cinestill Cs41).
Is Kodak Ektar 25 available in 35mm?
Yes — formats: 135, 120.
Sources & licences#
- Wikipedia: List of discontinued photographic films — CC BY-SA 4.0
Last updated October 03, 2026 · How we calculate · Sources