Nikon DX Lenses

SThornton

SThornton

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Scott
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Right, this is something that has been bugging me for a while and I thought i'd ask for clarification here.

Nikon make DX (crop) bodies and DX lenses for them.

If I bought the DX 55-300mm lens (assuming DX crop is x1.6) and put it on to an FX (full frame) body, would the lens then effectively become 35-187mm?

Basically, I'm trying to figure out if a DX lens on a DX body at (Eg.) 35mm would give the exact same results as an FX lens on an FX body at 35mm.

50% of me says yes because why else would Nikon release DX lenses.
The other half says no.

PLEASE HELP ME TP! Lol
 
The crop factor on Nikon is 1.5 (Thom Hogan states 1.52 but hey ...)

The difference between a specific DX lens and an FX lens is the image circle - i.e. the opening at the mount. On DX it tends to be smaller than on FX.

Focal length never changes between formats - what changes is the field of view (these are not the same thing). The focal length of a lens is a physical property and the sensor/film type is irrelevant.

Answering the 55-300 q, no it will still be a 55-300 but it will vignette dreadfully due to the image circle.
 
595px-Full-frame_vs_APS-C.svg.png


Only the field of view changes, not the focal length.
 
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