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Slow black and white film |
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A really first-class camera lens should
be able to resolve 100+11/mm shooting a high-contrast subject; slow
black-and-white films developed in fine-grain chemistry can resolve
200+11/mm. If it's just so much resolution overkill, why bother with
the slow films at all? It is the overkill capability that makes slow
black-and-white films so useful. The reserve capacity of these films
allows them to deliver excellent results in less-than-optimum lighting
conditions. Most can deliver 200+11/mm shooting a high-contrast subject
and are still able to resolve 90-100+11/mm in low contrast—more than
enough to record every line of resolution a good lens is able to
transmit to the film. Additionally, it should be obvious by now that
everything in photography involves tradeoffs. For slow-speed
black-and-white films it has been speed for grain. Less speed—less
grain.
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