All our articles about reciprocity

Fomapan Films: True Speed and Reciprocity Behavior

· 7 min read

Fomapan Films: True Speed and Reciprocity Behavior

Why Foma's Fomapan emulsions often meter slower than box speed and lose sensitivity sharply during long exposures.

Acros II Reciprocity: Why Metered Exposure Holds Into Multi-Second Territory

· 5 min read

Acros II Reciprocity: Why Metered Exposure Holds Into Multi-Second Territory

How Fujifilm Neopan 100 Acros II resists reciprocity failure to 120 seconds, and what its Super Fine-Sigma grain delivers.