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Thread: What does "crop factor" mean?

  1. #1

    Default What does "crop factor" mean?

    yup, as above. Often seen posts talking about 1.4x, etc crop factor, but never understood what it means.

  2. #2
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    Crop factor is unique to digital coz the size of the image sensor is smaller then a 35mm film size. So u need to X1.5 or whatever it is to get the same as a 35mm file size. So the factor applies to the lens also, so if u using a 50mm lens X the factor(1.5) u get 75mm instead.

  3. #3
    Moderator ortega's Avatar
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    it only affects DSLR cameras as there is a legacy frame size to refer to.

    Eg. as above: if you mount a 50mm lens you will get a FOV of 75mm (with 1.5 Crop factor), the lens is still a 50mm, just that the resulting image has been cropped.

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