MarkD wrote:
I have a Sigma 18-300 (there's only one version). I've used several all-in-one lenses and this is the best. I had a Tamron 18-270 VC PZD and I tried a Tamron 16-300 and the Sigma is sharper than either of them especially at 300 mm.
I'm using mine on Nikons, but the lens is the same and the relative performance should be pretty much the same.
thanks for the info...