Small scale processing Photographic processing



a cut-away illustration of typical light-trap tank used in small scale developing.


in amateur processing, film removed camera , wound onto reel in complete darkness (usually inside darkroom safelight turned off or lightproof bag arm holes). reel holds film in spiral shape, space between each successive loop chemicals may flow freely across film s surfaces. reel placed in specially designed light-proof tank (called daylight processing tank or light-trap tank) retained until final washing complete.


sheet films can processed in trays, in hangers (which used in deep tanks), or rotary processing drums. each sheet can developed individually special requirements. stand development, long development in dilute developer without agitation, used.







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