How is magnification achieved without spreading out the light? The fact that 50mm and 100mm enlarger lenses at the same print size will give the same times just confirms my point that it is the enlargement size of the print and not the distance that matters.
Originally Posted by Lee L
I had the same idea from John Shaw that diopters don't lose light. But Bjorn Rorslett corrected me on another forum and I have since done many tests to confirm his claim. See this thread for that exchange.