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Showing posts with label common. Show all posts
Showing posts with label common. Show all posts

Monday 2 April 2012

Processed print faults



Exhausted Developer
With all the processes that need to go well when producing a print in the darkroom it is surprising that faults are not more common. Even so the odd  one comes along to de-rail a good printing session. It does not matter how experienced you are sods law trips us all up!


Exhausred stop


Here are some of the most common faults: 



         Chemical fingers - this where odd irregular marks appear on the finished print usually at the edges. Make sure your hands are free from chemical contamination and dry before you handle photographic paper.

         Exhausted developer - fails to produced a full image once it has reached its completion time.
Exhausted Fix

         Wrongly diluted developer - produces faint grainy image. A bit like the above.

         Exhausted stop - leads to a purple tone to the white areas of the print.

         Exhausted fix - the slow brownish toning of the finished print in day light.



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Friday 2 December 2011

Trouble loading a plastic spiral.


The plastic Paterson type of spool can be difficult to load. A common problem is the little metal balls that grip the film get stuck. Dont try to force the film through, if you do it will kink the negative leaving a half-moon shape. It can make the frame(s) useless. You will need to part the spiral and start again. A pain I know! Be gentle when removing the film, there is a chance of damage.

Damp or wet spool will not load, so make sure it is completely dry before use. Sweaty, damp or sticky fingers will make it difficult as well.

A too tightly rolled up 35mm film in its cassette can take a set that makes it tricky to load. So when rewinding the film back into the case dont over wind it after you hear it has released itself from the camera spool. With practice it is possible to leave a little bit of the leader poking out.