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Originally Posted by Ukwildlifeo  so of these x-500mm sigma lenses what which is the 'best' if its possible to say? |
The Bigma is generally regarded as "Better" than the 170-500mm, I've no idea how the two compare optically, but the Bigma is branded their top range EX series, with the HSM. I've shot with another member here who was using the 170-500mm, which he affectionately calls the "Coffee Grinder" (The sound it makes when auto focusing!) I'm sure he would agree that the Bigma can rattle off far more shots in focus than the 170-500mm, so you stand more chance of getting the shot you want. To me focusing speed and accuracy is vitally important in a lens, it's one of the reason I rejected the Sigma 120-300mm, at least with the sample I had which couldn't hold a candle to the Bigma.
Don't get me wrong the 170-500mm is capable of producing fine shots, no doubt about it.
