Also made in 127, 220 and 620.
Shanghai General Film GP3 100
Long-running Chinese panchromatic film with a thin anti-halation layer giving a retro look in sheet sizes; the 35mm/roll version is believed to be European-coated.
ISO
100
Formats
7
35mm, 120, 4x5, 8x10, 127, 220, 620
Process
BW
Type
B&W
Characteristics
Reciprocity Failure
No official data available. The manufacturer hasn't published reciprocity specifications for this film.
For long exposures, try starting with a 1.3 exponent (t' = t1.3) as a baseline and bracket your shots. This is a reasonable middle ground that works for many films.
No manufacturer reciprocity data found; test or bracket long exposures.
Often Used For
Help improve this page. Some information for this film is limited. If you have experience shooting GP3 100 or know of published data we're missing, we'd love to hear from you.
Get in touchDescriptions combine manufacturer specifications with community experience. Subjective assessments reflect common sentiment among photographers and may not match your results.