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-   -   Question about DX lenses (https://forums.steves-digicams.com/nikon-lenses-62/question-about-dx-lenses-143124/)

bassfisherman Jun 26, 2008 11:31 PM

So this is my question.
If i put a DX lense on a Nikon D 200 will there still be the 1.5X crop factor

Thanks for your help.
Brett

JimC Jun 27, 2008 7:42 AM

It doesn't make any difference if it's a lens designed for a 35mm camera, or a lens designed for an APS-C sensor with a smaller image circle. The angle of view for a given focal length will be the same if the sensor or film size is the same.

The only major difference is that the DX lens has a smaller image circle. So, you'd get vignetting (darkening of corners) trying to one on a 35mm camera.

The larger your film or sensor size, the wider your angle of view (less apparent magnification) for a given focal length lens. The smaller your sensor or film size, the narrower your angle of view (more apparent magnification) for a given focal length lens.

IOW, the answer to your question is Yes. If you use a DX lens on your D200, you'd have the same angle of view as you would using a focal length that's approximately 1.5x longer on a 35mm camera.


rjseeney Jun 27, 2008 9:05 AM

All Nikon digital cameras have a 1.5 crop factor (except the D3, which can still use DX lenses at lower resolution). As Jim said, the DX lenses just have a smaller image circle as the APS sized sensor is smaller than the 35mm. This allows DX lenses to be smaller and lighter, but causes the vignetting on 35mm cameras, which effectively makes the Dx lenses unusable on 35mm bodies.


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