Comments on: UV light source for contact prints and UV enlarger /2007/uv-printing-unit-enlarger/ A blog/magazine dedicated to photography and contemporary art Sun, 03 Apr 2016 11:27:36 +0000 hourly 1 https://wordpress.org/?v=4.9.8 By: Fabiano Busdraghi /2007/uv-printing-unit-enlarger/#comment-6225 Sun, 30 Sep 2012 09:57:03 +0000 /2007/uncategorized/sorgente-di-luce-uv-per-le-tecniche-antiche/#comment-6225 Hola Raul,
the problem with an enlarger, especially with a pinhole, is that the light source must be placed quite far from the print, and light intensity decreases as the square of the distance. All historical process have a small light sensitivity compared with modern supports, so you always need plenty of light to keep the exposure time reasonable.

]]> By: raul /2007/uv-printing-unit-enlarger/#comment-6223 Sat, 29 Sep 2012 21:11:09 +0000 /2007/uncategorized/sorgente-di-luce-uv-per-le-tecniche-antiche/#comment-6223 hola fabiano i have think about the uv light if you use a difusser enlarger
wihtout condenser lenses and if you use a pin hole “lens” like enlerging lens only a iris or only a positive menisc lens , do you think its posible the uv light arrived to the salat paper print for example,
note : the low quality resolution on a pin hole sistem could give to the print a fine artistic style, i no forget the long exposure time its nesesary

thank its only one idea

]]> By: rodolfo /2007/uv-printing-unit-enlarger/#comment-2185 Tue, 08 Jun 2010 21:37:00 +0000 /2007/uncategorized/sorgente-di-luce-uv-per-le-tecniche-antiche/#comment-2185 vocês são formidaveis…muito bom o trabalho de vocês…continuem…
grande abraço
rodolfo
São Paulo
Brazil

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