Film, Darkroom & Historic Processes
6 terms
Fibre-based Paper
Film, Darkroom & Historic Processes
g/m²
Photographic paper whose emulsion is coated directly onto a paper base with no plastic layer.
Film
Film, Darkroom & Historic Processes
mm / format
A flexible transparent base coated with a light-sensitive emulsion, which records an image chemically rather than electronically.
Film Base
Film, Darkroom & Historic Processes
µm
The transparent support that carries the emulsion, historically nitrate or acetate and now usually polyester.
Film Grain
Film, Darkroom & Historic Processes
RMS granularity
The visible texture produced by clumps of developed silver, which becomes more apparent with faster films and greater enlargement.
Film Speed
Film, Darkroom & Historic Processes
ISO
A film's sensitivity to light, rated on the ISO scale and formerly as ASA or DIN.
ISO arithmetic = 2^((DIN−1)/10)
Fixer
Film, Darkroom & Historic Processes
minutes
A solution that dissolves the undeveloped silver halide, making the image permanent and no longer light-sensitive.