I can see why you're not interested in a debate. You're incorrect on this one. Paul On Aug 27, 2006, at 9:11 PM, Ryan K. Brooks wrote:
> > > On Sun, 27 Aug 2006, Godfrey DiGiorgi wrote: > >> On Aug 27, 2006, at 1:30 PM, Ryan Brooks wrote: >> >>> It appears to be a crop of a wide angle lens, which it is. >>> >>> In particular, informal head and shoulders shots look a bit odd >>> if I'm >>> close to the subject. The shoulder may seem enlarged if I'm >>> taking a >>> profile, for example. Whereas a 50mm would compress this distance >>> more. >>> >>> I thought I would be at home with the 31mm limited on the D, but >>> using a >>> wide angle lens to achieve a normal-length crop is a bit wonky to >>> me. I >>> still like it, I wish I was using a 50mm focal length instead of a >>> 31mm >>> lens cropped. >> >> ??? >> >> I don't know how you can tell the difference. The lenses' rendering >> qualities might be slightly different with respect to out of focus >> elements and rectilinear correction, but with regard to field of view >> and perspective: if the field of view is the same, the perspective >> will look the same. > > The field of view is the same, but that doesn't say anything about the > transform taking place optically. The image from 50mm crop of a > ~31mm > lens != 50mm > full frame. Try it. You can really see it when you're framing, > and it > makes for weird magnification of things close to the lens. > > I'm not talking about bokeh or anything esoteric. Try it. Cropped > focal length isn't the same as focal length. Not interested in a > debate, > > -R > > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
