Chris_Platt Offline Upload & Sell: Off
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After seeing some posts here, I decided to purchase the 150-500mm OS as a possible replacement for my Bigma. After taking a number of comparison shots between the new lens and my Bigma, the 150-500 seems to have the edge up to 400mm. I'd say the lenses are tied with respect to sharpness, but the 150-500 exhibits a little more contrast. However, above 400mm, the 150-500 resolution falls off substantially. It is much softer than the Bigma at focal lengths above 400mm. Perhaps I just have a bad copy, but I'm certainly going to hang onto the Bigma for now. The 150-500mm OS lens is a great 150-400mm OS lens!
To test the lenses, I simply taped a newspaper to the wall and took test shots at different focal lengths. Both lenses were placed on a tripod 15 feet from the wall. Shutter speed and aperture were constant. OS was turned off on the new lens. I didn't like the results, so I ran it several times over a couple of days. The answer was always the same.
Sigma 150-500, 500mm, f9, 1/60 (with flash), tripod, OS off, shutter released with self timer
http://www.cdplatt.com/forumpics/150-500/150-500%20f-9%20100%20percent%20crop.jpg
Bigma, 500mm, f9, 1/60 (with flash), tripod, shutter released with self timer
http://www.cdplatt.com/forumpics/150-500/Bigma%20f-9%20100%20percent%20crop.jpg
Click here 150-500 full size image (large file!)
Click here for Bigma full size image (large file!)
Edited on Jul 27, 2008 at 03:56 PM
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