John, This is easily tested by putting it on a p-Z1 (which I've done). It's full frame down to 13mm (or a 19.5mm effective FOV) before vignetting becomes a problem. The Samyang would be 14mm on a full frame and an effective 21mm on APS-C.
However, the Samyang is an f/2.8 lens where the Sigma is f/4-5.6. On Wed, Apr 29, 2015 at 2:28 PM, John <[email protected]> wrote: > The thing about the Sigma EX 10-20 is it's a DC lens, i.e. CROP. If you > ever get the putative Full Frame DSLR, it's going to vignette a whole lot. > > It's an great lens with an almost ungodly wide field of view (and still > rectilinear), but it's not going to work with FF. > > On 4/28/2015 11:26 PM, Darren Addy wrote: >> >> You might also consider the Pentax 21mm f3.2 Limited. The SMC version >> (used) can be had for nearly the same price as the Bower. >> http://www.pentaxphotogallery.com/photos/gallery/query?camera=&lens=80 >> http://www.flickriver.com/lenses/pentax/smcpda21mmf32al/ >> >> Obviously not as wide as the 14mm Samyang. But a much smaller package >> (119 gr vs 558 gr) and autofocus. Price favors Samyang if comparing >> new to new. >> >> I'm very happy with my Sigma EX 10-20mm f4-5.6 for the ultrawide side >> of things, but recently I find myself drawn to that little 21mm Pentax >> Limited. >> >> >> On Tue, Apr 28, 2015 at 9:35 PM, P.J. Alling <[email protected]> >> wrote: >>> >>> So for quite some time now I've been debating the merits of buying an >>> extra-ultra wide angle lens. Since going digital the only really wide >>> lens >>> I've been using is my old K 17mm f4.0 fisheye, which is kinda like a >>> having >>> a 24mm lens on a 35mm film body but with just incredible barrel >>> distortion, >>> but not fish eye. >>> >>> I've been debating getting the 15mm f4 the 14mm f2.8 one of the Zooms >>> either >>> the Pentax 12-24 or one of the Sigma Zooms. The Samyang 10mm is really >>> very >>> tempting, but I'm not sure that I'd use it enough to justify it's rather >>> steep price, especially as it's quite bulky and I've been trying very >>> hard >>> to keep the lenses in my kit as small as possible. >>> >>> It hasn't helped that I've spent the last few years pretty broke. >>> >>> Well now B&H photo has the Samyang 14mm f2.8 in Bower livery for only >>> about >>> $260. Pretty much every review I've read about it says it's an awesome >>> lens >>> for the price, and at this price I almost have to get one. >>> >>> -- >>> I don't want to achieve immortality through my work; I want to achieve >>> immortality through not dying. >>> -- Woody Allen >>> >>> >>> -- >>> PDML Pentax-Discuss Mail List >>> [email protected] >>> http://pdml.net/mailman/listinfo/pdml_pdml.net >>> to UNSUBSCRIBE from the PDML, please visit the link directly above and >>> follow the directions. >> >> >> >> > > -- > Science - Questions we may never find answers for. > Religion - Answers we must never question. > > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. -- Life is too short to put up with bad bokeh. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
