New Sigma 17-70mm F2.8 - 4.5

For Nikon users at least, I can't see all that much of an advantage over the 18-70 that has been so well received already. The only difference really is 1mm extra on the wide end, and 2.8 at the fastest point rather than 3.5 but that's probably not a huge difference. On the other hand, the Nikkor is AF-S (USM Equiv) whereas the Sigma is not HSM.

If it was 2.8 throught the zoom range, it would be 1. a lot heavier, and 2. a lot more expensive.
 
Back
Top Bottom