I am doing this for my blog and will post my finding soon enough (read first week of january or so) I was just seeing if anyone wanted me to add things to the review. before I start tomorrow.
Im not an authority on lens reviews neither do I use charts nor the terms that accompany the technical aspects of photography. I have however been photographing since before Canon released its first EF 70-200mm 2.8 L zoom in 1995. I had one for more than 10 years. When they released the first iteration of the 70-200 2.8 with IS in 2001 it did not seem like a step forward, it was a lens that in my opinion and many others not as sharp as the previous one, also heavier as it contained more glass. I had to look elsewhere for a good replacement, which I found in the Sigma.
I will be testing the lenses with a Canon Eos 1d Mark IV, Canons most advanced camera as of January 2011. Also the camera with which I will be working with the two lenses this year. I.e the test. Also the test will be done on my Benbo Tripod with a Manfrotto head. Not the Monopod that I use while working, all so that each lens will have the same angle. Any photos of the lenses and camera are done with my Eos 1Ds MkII and a modified for Nikon mount Zeiss .zf 50mm MP. The place of the test will be done at Valle Romano Golf and Resort. The processing will be done in the latest version of Apple Aperture.
I will be looking hardest at the overlapping FOL (FOV x1.3mm), such as 120mm (156) 150mm (195) and 200mm (260). Also independently ill be looking at 70mm (91mm) and 300mm (390).
Below you will find jpegs at 50% and a compression of 10.
I mainly do this test for myself so that I can choose lens for occasion,
* Af Accuracy on a non -mobile object
* Tracking on a slow moving object
* Metering (even though I shoot in raw Im interested how much flare can throw the cameras metering to the left or right.)
* Sun flare
* Minimum focus distance and maximum focus distance
* Center sharpness ( should not be a problem as the camera is 1.3 )