FX Sensor Questions and Help

Started May 1, 2013 | Questions thread
pipee Forum Member • Posts: 81
Re: FX Sensor Questions and Help

A full frame with the same megapixel count will capture about twice as much detail as a crop frame.

Because the pixels are crammed onto a sensor half the size of a full frame it is true that D7100 is equivalent density to a 50+ megapixel fullframe. This puts a lot of strain on the lens so in real life, you will not resolve near that many megapixels.

There are many detailed explanations on why that is but I like to think in simple scenarios:

As we all know, at the same focal lengths, the full frame will be wider than a crop frame due to the cropped image. The full frame thus can get closer to the subject or zoom in to achieve a similar result to the crop frame. So it's simple, you are resolving more detail than the equivalent crop frame because you are closer to the subject.

A lens will struggle more in the corners more on a full frame because it uses a bigger area of the lens. If corner brightness and sharpness is important to you, then do research on the lens.

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