its a still image of something you move your camera to get the objects you want in the screen. this will be what the photograph will look like in the end. then you press a button which will take the...
When your print is developed, is is still prone to be altered by light exposure.thus the fixer alters the chemicals on the surface so that this no longer happens.This is why the working light is red,...
Your question is a bit vague, so here's a few answers. From the perspective of physics: they have to be calculated and controlled in order to produce quality lenses. The angles of incidence of light...
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