Appendix

Problem

Cause

Remedy

 

 

 

Unsteady Image

 

 

Vertical

Heavy emulsion build-up in the film gate area,

Clean film gate area, use different film stock

 

damaged film perforation,

 

 

very poor gliding ability

 

 

of the raw film stock,

 

 

film stock with positive perforation,

 

 

dimensions of raw stock out of tolerance

 

Horizontal

Heavy emulsion build-up in the film gate area,

Clean film gate area,

 

film edge is not straight

use different film stock

Pressure exposures around perforation holes

Mechanical stress on the perforation holes

Pressure exposures do not affect

 

 

the image steadiness

 

 

 

Image Problems

 

 

Blurred image

Flange focal distance is set incorrectly,

When cleaning the film gate

 

lens is set incorrectly,

ensure that the surfaces are absolutely clean,

 

poor quality or defective lens,

check the lens and the flange focal distance

 

magazine pressure plate set incorrectly

Take magazine to ARRI Service Centre

 

(image problem confined to one magazine)

 

 

 

 

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