The pressure plate surface in camera is the usual halo source with some films.
Film sensitivity and AH-layer are secondary.
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The pressure plate surface in camera is the usual halo source with some films.
Film sensitivity and AH-layer are secondary.
if you like that halo, feel free to enjoy my new years eve fireworks at fomapan 100 :-)
http://david.asimov.cz/2013-01-01-ohnostroje.html
longest exposure was 8 minutes.