Color slide film · Discontinued

Ilford Ilfochrome 50

Ilford Ilfochrome 50 is a color slide film rated at ISO 50, developed in E-6. Below: specs, an exposure guide and similar stocks.

ISO 50E-6Discontinued135
ISO 50
Box speed
Color slide
Type
E-6
Process
Discontinued
Status
1985–1988
Years made

Film specifications#

Manufacturer
Ilford
Film
Ilfochrome 50
Speed
50
Process
E-6
Formats
135
Base
Triacetate
Made in
UK, Germany
Status
Discontinued

Character & history#

General purpose color reversal film, repackaged Agfachrome stock.

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

Exposure guide at ISO 50#

Sunny 16 for this film: f/16 at 1/50 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—1/2000 s1/500 s1/125 s
EV 15 · Bright sun—1/1000 s1/250 s1/60 s
EV 14 · Hazy sun1/2000 s1/500 s1/125 s1/30 s
EV 13 · Cloudy-bright1/1000 s1/250 s1/60 s1/15 s
EV 12 · Overcast / open shade1/500 s1/125 s1/30 s1/8 s
EV 10 · Sunset1/125 s1/30 s1/8 s0.5 s
EV 8 · Bright interior1/30 s1/8 s0.5 s2 s
EV 5 · Home interior at night1/4 s1 s4 s15 s
EV 3 · City street at night1 s4 s15 s> 1 min
Developing E-6: Colour reversal (slide) chemistry. Fewer labs run E-6 today; it can be cross-processed in C-41 for saturated, contrasty colours.

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 Ilford films#

Frequently asked questions#

What ISO is Ilford Ilfochrome 50?

50 — set your meter to ISO 50 for box speed.

Is Ilford Ilfochrome 50 still made?

No, it has been discontinued (1985–1988).

How do I develop Ilford Ilfochrome 50?

E-6 process. Colour reversal (slide) chemistry. Fewer labs run E-6 today; it can be cross-processed in C-41 for saturated, contrasty colours.

Is Ilford Ilfochrome 50 available in 35mm?

Yes — formats: 135.

Sources & licences#

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