All Forum Comments
Comment by johnwhit posted on Tamron AF 70-300mm VC USD - Poll at 24/07/2011 - 10:46
The Miniwide is the 28mm lens, I think. The manual focus Sigma 24mm f2.8 Superwide II that I have is a fine lens.
And I have even less hope now.
John
Comment by johnwhit posted on older Prime vs newer Zoom at 22/07/2011 - 19:39
John
Comment by johnwhit posted on older Prime vs newer Zoom at 22/07/2011 - 16:14
There is a 24mm shootout site and the Oly 24mm beat the Sigma.... easy conversion to Pentax
John
Comment by johnwhit posted on older Prime vs newer Zoom at 22/07/2011 - 14:30
I've tried 3 FA*24/2's and non could match the Sigma edge sharpness until f/8, but had much higher contrast.
Although no doubt there are some exceptions, relatively few 24mm images are shot at f2.
John
Comment by johnwhit posted on older Prime vs newer Zoom at 22/07/2011 - 14:15
John
Comment by johnwhit posted on older Prime vs newer Zoom at 22/07/2011 - 13:50
Do you not remember the AP cover Sigma beats Leitz? They tested all the 24mm lenses available and found the Sigma beat everything, another Dr Bell job
Personally I think the Slovenian site has either a very beat up lens, a bad copy or a duff test. I have 2, one manual focus the other AF, both excellent. There is some pronounced vignetting on film wide open and the contrast is a lttle lower than Pentax, but sharp at the edges wide open.
I've tried 3 FA*24/2's and non could match the Sigma edge sharpness until f/8, but had much higher contrast.
John
Comment by johnwhit posted on older Prime vs newer Zoom at 22/07/2011 - 13:28
[/quote]The optical design is similar to, but not the same as the Leica, they're using it on a Canon 1DS MkIII BTW
John
Comment by johnwhit posted on older Prime vs newer Zoom at 22/07/2011 - 13:09
"I know a little bit strange choice at first glance, but does have aperture and focus manually, but the scan was made from a similar, if not the same design as the Leica model. Even before the test, I could see that this lens can get very good sharpness, at least on crop camera. On the FF body is much more necessary to close the shutter for sharp corners".
Canon camera 1dsIII
John
Comment by johnwhit posted on older Prime vs newer Zoom at 22/07/2011 - 12:32
Agreed a £400 lens should be designed better- I bought mine 2nd hand on here so there was a bit more value in it.
John
Comment by johnwhit posted on FS: Pentax-DA 17-70mm SDM at 21/07/2011 - 18:57


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This premium, state-of-the-art, telephoto zoom lens supports full-frame and APS-C format digital SLR cameras. It includes many features that make it stand out even amongst other products in the telephoto zoom class. Built to exacting Superior Performance (SP) standards, it features Tamron’s first application of an Ultrasonic Silent Drive (USD) for enhanced auto-focusing speed and responsiveness.
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