farrar@xxxxxxxxxxxx writes:
<< A recent Popular Photography had an article about street photographers
in Havana who do pretty much this. They have homemade setups. They expose
onto B&W printing paper, develop. Then they take a second exposure of that.
At the intermediate stage they can alter the picture, for example by
adding a picture of Che Guevara into your picture.
>>
This seems common in many places in South America. For example in Peru I have
photographed them doing this in the main plazas in little mountain towns. The
cameras are old german bellows units modified to hold chemicals on the side
of the bellows. So the bellows become an extended darkroom. They do local
contrast control using ferricyanide rubbed on the paper to lighten people's
faces etc. The bellows rack out to do 1:1 copying for the final positive.
Of course if you do only one exposure onto the paper originally
and contact print (similar to a polaroid but not chemical diffussion) face to
face you get only one set of lens aberations unlike most normal situations
where the enlarger or projector adds to the image degradation. It is only
because the RC papers have reasonably uniform bases and no logos that this
kind of printing is vauguely practical these days. Ilford has some discussion
of this in their paper literature.
Regards,
Tim Hughes
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