NX, vintage lenses and Ebay adapters...any problems?

If a traditional wide is used, it will be smaller for shorter focal lengths.

What you see with SLR is shortest lens length is around 40 or 50mm.  As focal lengths get longer the lens increases in length of course, but as focal lengths get shorter, they can't stick the lens further inside the body since it would interfere with the mirror, so it is actually a telephoto lens design reversed, or retrofocus lens, so the wider you go the larger the lens gets (getting more telephoto).

Here is one attempt at a true wide angle lens on an SLR, it required the camera it was installed in to have mirror lockup, but it is very small considering it is similar function to a 14mm f/2.6 on an APS-C camera.

http://www.mir.com.my/rb/photography/companies/nikon/nikkoresources/ultrawides/21mm.htm

Eric

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