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Full Frame 35mm VS APS-C - D-SLR - Cinematography.com 超可愛的!I don't think I can give a full explanation, it's just a short cut to figuring it out that works. Let's say we are talking about a 2X difference instead of 1.6X, to make the math easier. Look on a Depth of Field chart and compare a 25mm lens to a 50mm len...
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