Exposure - Good light finding balance with light
Light meter communicates with you about the light for that moment
Process the film in D18
Use negatives to make contact sheet in dark room
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Aperture (F-stops) F4, F5.6, F8, F11, F22
F4 is a large opening, allowing a lot of light. Not the whole pic is in focus, soft in some areas.
F8/11 is a medium opening
Located on the lense (adjustable ring next to FOCUS)