Hello guys and thanks for your contributions above.
Manual focusing for me is becoming a quite difficult. I am looking to get rid of my manual prime lenses in favor of a decent fast zoom. I have come up with a list of two candidates that is within my price range. The Tammy 70-200 2.8 and Sigma 70-200 2.8.
Performance-wise which of the two lenses gives the sharpest detail wide-open at 70mm, 100, 135 & 200mm)?
I use the K20d, and the FAJ 75-300 lens, which IMO has quite a good IQ and reasonably fast and accurate AF in good conditions, but there has been several occasions where I have failed to get the image I wanted because the K20D/FAJ's AF wasn't good enough on the day, as it hunts quite a bit especially in low-light and high contrasty situations. So perhaps the Sigma would be a good bet here. But as already pointed out the Tamron has the better IQ which is also very important factor for me. Given my shooting style, which should I choose?
Also, any alternatives with similar price range to the tammy and sigma would be much appreciated.
On another note, I'm also thinking of upgrading to the K7, but wonder if it is a wise move at this time. I would like to know if Pentax
1. Plan to produce a new DSLR camera model, maybe FF and or successors to the K7 and or K20d models?
2. If yes above, then when?
Last edited by mixtri; 11-16-2009 at 04:39 AM.