All Forum Comments
Comment by RR posted on Returning to the world of Wide Angle at 27/05/2010 - 21:15
Here's a link to my Samyang shots on flickr. Also try the link to a flickr group dedicated to this lens in it's various guises.
Comment by RR posted on looking for a 1.4 or 1.8 prtrait lens at 27/05/2010 - 16:44
I have a similar lens, it looks a little later than the one you depicted & is a T-mount Tamron twin-tele 135mm f2.8 (I don't have the matched tc) I bought it cheaply mainly to play around with bokeh, it's a strange beast... it has 12 aperture blades & a stepless aperture. You set the aperture as normal with a clicked ring, but it has a second ring which is used to manually open & close the aperture to the set stops, so you can effectively leave it at any point in between.
Here's a link to 2 shots I have on flickr, one at f/4 & one at f/11 showing the nicely rounded bokeh.
I must admit that I haven't made much use of it, maybe I'll throw it in the bag next time I go out.
Comment by RR posted on New lens oddity at 27/05/2010 - 12:33
I believe PS CS5 has a new feature for doing exactly this, but what lenses are supported I don't know. Support for Pentax lenses?!
John
Which will be fantastic if your main subject happens to be test charts !
but I'd agree with Mike... learn to embrace the distortion.
Comment by RR posted on Wide angle lens distortion at 24/05/2010 - 16:06
Comment by RR posted on Another pointless thread at 21/05/2010 - 20:44
Comment by RR posted on Extreme Wide Angle wanted at 11/05/2010 - 18:55
That means you'd get a circular image with dark corners, pretty specialist use I'd think.
The angle of view of the sigma 10-20mm is 102.4 degrees at 10mm.
The AOV of the 10-17mm fishy is 180-100 degrees across the zoom range, so considerably wider.
Comment by RR posted on Extreme Wide Angle wanted at 11/05/2010 - 18:03
Comment by RR posted on Extreme Wide Angle wanted at 11/05/2010 - 17:17
Ignore the fact that it's "only" 10mm at the wide end, it is a misleading measurement where fisheyes are concerned. The actual field of view will be much, much, wider than your Sigma. 180 degrees in fact.
Forget your previous fisheye adapter experience. This is one of the sharpest lenses that Pentax currently manufacture imho.
Comment by RR posted on Extreme Wide Angle wanted at 11/05/2010 - 17:12
Comment by RR posted on Thie Pentax site at 11/05/2010 - 12:39



So don't discount the Da 14mm if you can find one at the right price.
Could I ask what dissapointed you about the Sigma 14mm? I've just bought one of these & am ok with it thus far example shot. I should try & use it more, but I'm enamoured with my Sigma 20mm & tend to reach for that first.