Sigma 170-500mm F5-6.3 APO Aspherical A-mount lens review by jdrandall
|jdrandall#414 date: Jan-19-2006|
flare control: 5
|ownership:||I have experience with this lens|
|compared to:||Sigma 50-500|
Canon 100-400L IS
|negative:||no zoom lock|
|comment:||I've owned & used both Sigma 50-500 and Canon 100-400L IS on my Rebel XT and used the Sigma 170-500 on my KM 7D.|
The Sigma 170-500 I have is not the latest DG version and I bought it new for $300. IMHO the DG does not provide any significant benefit on this (telephoto) lens.
The 170-500 is every bit as sharp if not sharper than the 50-500 and appeared to have better contrast than the 50-500.
Neither the 170-500 or the 50-500 were as sharp as the Canon 100-400L, but it was only evident on 100% crops.
Of course the Canon costs 5 times as much as what I paid for the 170-500.
When using the lens with my 7D, I was pleasantly surprised (shocked is a better word) that handheld shots @ 500mm were very sharp (it was freezing cold and I was shaking so bad I thought there was no way the pics were going to be any good).
I would highly recommend this lens.