London Metropolitan Archives:
A-D strip test
London Metropolitan Archives:
A-D strip test
London Metropolitan Archives:
Finger print on the photographic emulsion
London Metropolitan Archives:
Cellulose acetate degradation: "Channeling"
London Metropolitan Archives:
Cellulose Acetate degradation: "channeling"and distortion
London Metropolitan Archives:
Cellulose Acetate degradation: "channeling"
London Metropolitan Archives:
Distortion of the film base
London Metropolitan Archives:
Initial stage of "channeling"degradation
London Metropolitan Archives:
Bubble formation on cellulose acetate film
London Metropolitan Archives:
A-D strip reference pencil
London Metropolitan Archives:
Heavy cellulose acetate degradation
London Metropolitan Archives:
Deteriorated photograph on a light table
London Metropolitan Archives:
Cellulose acetate degradation
London Metropolitan Archives:
Cellulose acetate degradation
London Metropolitan Archives:
Cellulose acetate degradation
London Metropolitan Archives:
Cellulose acetate degradation (1)
London Metropolitan Archives:
Cellulose acetate degradation (2)
London Metropolitan Archives:
Cellulose acetate degradation