Profiles for Pentax K-5 lenses, JPG, added: DA 18-55, DA 50-200, Sigma 50, Sigma 8-16

Question

Hi
I just created and uploaded the following four profiles for the Pentax K-5 camera and JPEG-pictures.
The corresponding RAW prifles seem to be there but on the JPEG side there are practically none.
PENTAX K-5 (Sigma 50mm F1,4 EX DG HSM)
PENTAX K-5 (Sigma 8-16mm F4.5-5.6 DC HSM)
PENTAX K-5 (smc PENTAX-DA 50-200mm F4-5.6 ED WR)
PENTAX K-5 (smc PENTAX-DA 18-55mm F3.5-5.6 AL WR)
If they are ok they should be available soon.
br
Beholder003

Answer 1

PhotosbyMJ wrote:
Now that I have my 60D its time to set my goal for better glass. I hear rave reviews of the 70-200 f2.8 IS II lens. "No photographer should be without one" etc... My 60D is a 1.6 crop sensor - what are the pluses vs the minuses going for this lens - or is there an alternative suggestion? (Especially since I'm not planing to upgrade to full frame any time soon.)
Advantages: It's an extremely sharp lens that gives good results even wide open. The f/2.8 aperture makes it a good choice for indoor event photography. And the fact that it's a top-of-the-line "L" lens means that it probably won't require autofocus microadjustment, an important feature that Canon unaccountably left off of the 60D.
Disadvantages: It's very expensive (which is why my employer, not I, owns the one I use). It's very big and heavy, so it can be tiring to use in a long shoot. This is less of a problem indoors, where you're usually not moving around much and can occasionally set it down. That said, I have used mine outdoors, notably climbing around on the rocks at Acadia National Park, and it wasn't all that bad. Finally, the 70-200 range isn't ideal for a crop-frame camera. In particular, it doesn't match well with the traditional 18-55mm walking-around lens. Frankly, that's what eventually persuaded me to buy a 5D3.
Alternatives: The obvious one is the highly regarded latest version of the Sigma 50-150mm f/2.8, if you can find one. Sigma has a curious habit of discontinuing its most successful lenses long before their successors, if any, are ready for release, and the 50-150 is no exception. Unfortunately, Canon makes no lens with that zoom range, which matches very well with the crop-camera walkers. One drawback of the Sigma is that it's almost as big and heavy as the Canon 70-200; maybe if they ever do make a successor, they can shrink it a bit..
Bob
Boston, Massachusetts USA