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ISO
ISO has different meanings in film cameras and digital photography.
- Also known as film speed
- ISO always comes at the cost of details, sharpness and dynamic range
Film Photography
- ISO refers to film sensitivity in film cameras
- Higher ISO - more sensitive to light
- Film photography has grain, in the highlights
Digital Photography
- ISO in digital photography refers to applied gain
- Gain is applied after recording raw data
- Digital photography has noise, in the shadows
ISO Response Curves of Digital and Film Cameras
Related:
- Reciprocity
- Reciprocity Failure (in Film)