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Sigma 150-500mm f/5-6.3 AF APO DG OS

150-500
Review Date: Dec 2, 2011 Recommend? | Price paid: Not Indicated

 
Pros: Sharp at 500mm end, smooth zoom mechanism, very good Optical Stabilization.
Cons:
Heavy, large, colours take some practice to get right.

I had an early copy of this lens with a serial number in the 1006xxx range. It was too soft at the 500mm end so I returned it. A year later I bought another one with a serial number in the 1034xxx range. It is very sharp at the 500mm end, the OS works perfectly and I use it with a Kenko 1.4tc with no problems autofocussing.
I highly recommend this lens over earlier copies and over the original 50-500mm Sigman "Bigma" which was tack sharp at the long end on a tripod.


 
Sigma 150-500mm f/5-6.3 AF APO DG OS

150-500
Review Date: Sep 6, 2009 Recommend? yes | Price paid: Not Indicated | Rating: 9 

 
Pros: Excellent build, surprisingly sharp IQ throughout focal length, excellent image stabilizing OS, fast AF, easily accessible buttons, effective handle "foot" that is easily managed,
Cons:
Very long, a tad heavy for long handheld shoots. Contrast not as crisp as preferred (same on the Bigma).

I tried a copy of this lens when it first came out in mid 2008 and was dissappointed with the image quality. It was pretty soft at the long end. Then a year later I tried a second copy and found it to be an excellent lens that I greatly enjoy using. I have just shot the full moon both handholding and on a tripod and I am amazed at the effectiveness of the OS on this equipment! The photos are better than what I was able to achieve with my Bigma a couple of year ago. Mind you, I am now using the Nikon D300 which marries well with this lens.
All in all, a very satisfying long lens at a good price.