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ISO speeds
QA lot of modern DSLRs push the boundaries of ISO settings, with speeds that would boggle the minds of film users, such as ISO 25,600. However, is this at the expense of slower speeds like 200 and100?
Back in the day when the fastest films speeds were ISO1,000 for colour and perhaps ISO1,600 for black & white, we used to have much slower speeds, like ISO 64, ISO 50 and even ISO 25. I even recall using a red filter on a camera with ISO 50 in…