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02-02-2012, 12:21 PM   #31
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Once you understand it the current way of things seems fine to me. The focal length tells you the magnification. Crop factor or equivalent to 35mm ratings like point and shoots have, give a perceived magnification or a way of comparing perceived magnification between cameras with different sensors. Once you have used a few lenses on your camera to have a point of reference, you can tell from focal length how a lens will show on your camera. Should you want to compare another camera (like if you were looking at getting a camera with a different sensor size than the one you are using), crop factor will give you some means to compare the perceived magnification (at what focal length will the car fill the frame so to speak, going off the telescope analogy from above).

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