Ilford+Foma Reciprocity-Failure Tests

Ilford+Foma Reciprocity-Failure Tests

These tests show that (1) Ilford MGRC V Deluxe has only slight reciprocity-failure over 5 stops,
(2) FOMA RC is considerably worse, losing 1/15 stop per time-doubling, and (3) constant light versus PWM of LED makes no difference (which surprised me).
Equipment Used
Enlarger
Paper & Developer
Ilford MGRC Deluxe; FOMA sold as arista.edu
Digital Post Processing Details
Cropped and scaled in Gimp.
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Experimental Gallery
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albada
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IlfordFomaRF.jpg
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