On an APS-C digital camera with a crop factor of 1.5x, a 50mm lens yields approximately what equivalent field of view?

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Multiple Choice

On an APS-C digital camera with a crop factor of 1.5x, a 50mm lens yields approximately what equivalent field of view?

Explanation:
On APS-C sensors, the smaller sensor size makes the angle of view look as if you’re using a longer focal length on a full-frame camera. The crop factor of 1.5x means the same 50mm lens covers a field of view equivalent to about 50 × 1.5 = 75mm on full-frame. So the equivalent field of view is 75mm. The other numbers would correspond to wider or more telephoto views that don’t match how the crop sensor changes the frame.

On APS-C sensors, the smaller sensor size makes the angle of view look as if you’re using a longer focal length on a full-frame camera. The crop factor of 1.5x means the same 50mm lens covers a field of view equivalent to about 50 × 1.5 = 75mm on full-frame. So the equivalent field of view is 75mm. The other numbers would correspond to wider or more telephoto views that don’t match how the crop sensor changes the frame.

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