Film specifications#
- Manufacturer
- ORWO
- Film
- UT 13
- Type
- Color slide film
- Speed
- 16
- Process
- ORWO 9160
- Formats
- Mikroma
- Base
- Triacetate
- Made in
- GDR
- Status
- Discontinued — replaced by ORWOCHROM UT 15
Character & history#
Very fine grain color reversal film. 16mm cine film confectioned in three-packs or bulk rolls for Meopta Mikroma cameras.
Description adapted from Wikipedia’s “List of discontinued photographic films” (CC BY-SA 4.0).
Exposure guide at ISO 16#
Sunny 16 for this film: f/16 at 1/15 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 | 1/2500 s | 1/640 s | 1/160 s | 1/40 s |
| EV 15 · Bright sun | 1/1250 s | 1/320 s | 1/80 s | 1/20 s |
| EV 14 · Hazy sun | 1/640 s | 1/160 s | 1/40 s | 1/10 s |
| EV 13 · Cloudy-bright | 1/320 s | 1/80 s | 1/20 s | 1/5 s |
| EV 12 · Overcast / open shade | 1/160 s | 1/40 s | 1/10 s | 0.4 s |
| EV 10 · Sunset | 1/40 s | 1/10 s | 0.4 s | 1.6 s |
| EV 8 · Bright interior | 1/10 s | 0.4 s | 1.6 s | 6 s |
| EV 5 · Home interior at night | 0.8 s | 3.2 s | 13 s | 1 min |
| EV 3 · City street at night | 3.2 s | 13 s | 1 min | > 1 min |
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 slide film around ISO 16.
- Agfa Umkehrfilm K ISO 16 · disc.
- Ilford Colour Film F ISO 20 · disc.
- ORWO UK 14 ISO 20 · disc.
- Gevaert Gevacolor R3 ISO 12 · disc.
More ORWO films#
Frequently asked questions#
What ISO is ORWO UT 13?
16 — set your meter to ISO 16 for box speed.
Is ORWO UT 13 still made?
No, it has been discontinued (1964–1975).
How do I develop ORWO UT 13?
ORWO 9160 process.
Is ORWO UT 13 available in 35mm?
Not according to our data — formats: Mikroma.
Sources & licences#
- Wikipedia: List of discontinued photographic films — CC BY-SA 4.0
Last updated October 03, 2026 · How we calculate · Sources