Color slide film · Discontinued

Agfa Agfacolor CK

Agfa Agfacolor CK is a color slide film rated at ISO 80, developed in AP 41. Below: specs, an exposure guide and similar stocks.

ISO 80AP 41Discontinued135-36120
ISO 80
Box speed
Color slide
Type
AP 41
Process
Discontinued
Status
c1963–c1972
Years made

Film specifications#

Manufacturer
Agfa
Film
Agfacolor CK
Speed
80
Process
AP 41
Formats
135-36, 120
Base
Triacetate
Made in
Germany
Status
Discontinued

Character & history#

General purpose color reversal film for artificial light. Similar properties as Agfacolor CT18.

Description adapted from Wikipedia’s “List of discontinued photographic films” (CC BY-SA 4.0).

Exposure guide at ISO 80#

Sunny 16 for this film: f/16 at 1/80 s in bright sun. Negative film tolerates 2–3 stops of overexposure; slide film needs accuracy within about ⅓–½ stop.

Lightf/2f/4f/8f/16
EV 16 · Snow / beach, bright sun—1/3200 s1/800 s1/200 s
EV 15 · Bright sun—1/1600 s1/400 s1/100 s
EV 14 · Hazy sun1/3200 s1/800 s1/200 s1/50 s
EV 13 · Cloudy-bright1/1600 s1/400 s1/100 s1/25 s
EV 12 · Overcast / open shade1/800 s1/200 s1/50 s1/13 s
EV 10 · Sunset1/200 s1/50 s1/13 s0.3 s
EV 8 · Bright interior1/50 s1/13 s0.3 s1.3 s
EV 5 · Home interior at night1/6 s0.6 s2.5 s10 s
EV 3 · City street at night0.6 s2.5 s10 s30 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.

More Agfa films#

Frequently asked questions#

What ISO is Agfa Agfacolor CK?

80 — set your meter to ISO 80 for box speed.

Is Agfa Agfacolor CK still made?

No, it has been discontinued (c1963–c1972).

How do I develop Agfa Agfacolor CK?

AP 41 process.

Is Agfa Agfacolor CK available in 35mm?

Yes — formats: 135-36, 120.

Sources & licences#

Last updated October 03, 2026 · How we calculate · Sources

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