Sigma 80-400mm f/4.5-5.6 EX OS APO RF ...- User Rating: 
Summary for Sigma 80-400mm f/4.5-5.6 EX OS APO RF ...- Great lens for the money.
Notes on Sigma 80-400mm f/4.5-5.6 EX OS APO RF ...- I rate this lens ABOVE AVERAGE, but since it does not have the HSM focus
motor, it is not as fast as the Canon 100-400 (push pull)l lens, since I shoot mainly PGA Golf Tournaments for publication, it is less of a problem
for me. It's battery use is high (my 10D'S), IF LEFT IN CONSTANT IS mode.
Purch/ from B&H, early in production cycle, 2006.
Sigma 80-400mm f/4.5-5.6 EX OS APO RF ...- User Rating: Summary for Sigma 80-400mm f/4.5-5.6 EX OS APO RF ...- Built like a tank
Notes on Sigma 80-400mm f/4.5-5.6 EX OS APO RF ...- I bought this after looking at many reviews. The quality of the photos and the test results convenced me that the saving was worth the difference between this lens and Canon. I also did not care for the push pull of the Canon.
I have been shooting with this lens since August 2005, and have a collection of beautiful nature photos. From birds flying to bees sitting on flowers. Some scenic shots to shots of my great niece. All are very sharp and clean.
The lens is heavy, but any lens in this class will be. One becomes use to this very quickly. It focuses a little slow, but I have missed very few shots because of it. I prefocus when I believe there may be a problem arising.
The zoom was tight at first, but after using the lens it has loosened up a little so zooming is no problem.
All in all I am very satisfied with the lens and have many beautiful photos to print and share with family and friends.
