I have finally the budget to replace my kit 55-200 zoom lens with a better one, and I’d like to see if anyone here has some direct experience to share.
The usage of the lens will be mainly portraits and proxi-photo of flowers and insects, for which I’d want to achieve a shallow depth of field and a nice bokeh. My current camera is a Nikon D300 (12 MP APS-C).
Looking around at what is available on the market at a reasonable price, I ended up with two alternatives: the Sigma 70-200mm F2.8 DG OS HSM or the Tamron SP 70-200mm F/2.8 Di VC USD G2. Reviews don’t seem to give a clear winner, so it’s difficult to judge… the main advantage of the Sigma (at least for my goals) seems to be the higher magnification ratio (1:4.8 instead of 1:6.1).
Do you have any experience of those lenses? Any good advice?