On Fri, Aug 7, 2009 at 11:20 AM, Tony Cogan<[email protected]> wrote:
> Now I need to replace it - for less money than I would prefer to spend. How > do you people think it compares with the Sigma 70-300 f4-5.6? Is there a > different lens to consider in the under-$250 price range? I don't have experience with the Pentax, but I have the Tamron 70-300, and my dad has the Sigma (we both have K10D's). I found the Tamron pretty poor at 300mm. At the long end, it has bad purple fringing at all apertures, and a general lack of sharpness. The purple fringing isn't just "branches against a bright sky"... it also appears at the boundary of light and dark feathers on a Canada Goose's face, for example. At shorter focal lengths, especially 70-135mm or so, I'm quite pleased with it. I'm also happier with the "macro" performance than I expected to be. You can browse around my photos at: http://www.flickr.com/photos/coneslayer/tags/tamronaf70300mmf456lddimacro/ But they're all reduced in size, many are cropped, many have had the purple fringing reduced as best I could, etc. Both of my PDML Photo Annual images were taken with this lens. (Blasphemy?) My dad's Sigma seems generally better than my Tamron, and I don't think he has any real complaints about it. I've heard that the Sigmas exhibit more lens-to-lens variation; his seems to be a good one. My new DA*300 is in a whole different league than either of them at 300mm, of course... -- 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.
