I have a Nikon D3200 camera. I want to buy a prime lens. I read some reviews online and understand that the "Nikon AF-S NIKKOR 50mm F/1.8G" would be a good lens to buy, but this is a FX lens.
Can someone please explain me how my camera, which has DX-format sensor, can support FX lenses?
Answer
It's quite simple:
A lens projects what is called an "image circle" onto the sensor. A DX-only lens is designed to project an image circle just big enough to cover that sensor. An FX lens is designed to project an image circle big enough to cover a FX frame.
Therefore an FX lens will work on a DX sensor properly.
(But it will have an effective "crop factor" of 1.5x as you are only using the inner section of the image circle, effectively "zooming" the lens in 1.5x. That said, on a DX body the crop factor applies to all lenses, both DX and FX.)
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