Sigma 150-500mm HSM OS or 50-500mm HSM OS???

here is relevant info based on field testing;

http://blog.sigmaphoto.com/2011/the-50-500mm-vs-150-500mm-shootout-and-telephoto-faq%E2%80%99s-by-robert-o%E2%80%99toole/

I doubt that the review is biased, as both lenses reviewed are from the same manufacturer.

Further:

N-Photo mag Jul 2012 lab MTF scores the 150-500mm as follows;

Wide: 2299

Mid: 2254

Long: 1630

50-500mm scores;

Wide: 1855

Mid: 1805

Long: 1540

Enjoy.

--
Kevin - Photos 'n Prose: http://the-photo-muse.blogspot.com/
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