15-85mm or 18-200mm

[R.Acevedo]

Thanks, I

[neuroanatomist]

What I'd like to see is two pictures taken with lenses having different amounts of barrel distortion but in the example itself having zero perspective distortion. If you get bored maybe you could show us since I "think" you have two lenses that would apply

Yep, the 24-105mm @ 24mm vs. the TS-E 24mm which is about as undistorted as you'll find at that focal length. The only examples I have of the same scene shot with both are where the TS-E corrects for both (perspective corrected with shift), but I'll find a bit of time to shoot a straight-on comparison which will isolate the barrel distortion component in a 'real world' setting.

Comparison shot and posted in the Barrel Distortion thread.

[R.Acevedo]

Got the lens today. The UV filter it came with is a Promaster HGX UV 72mm after looking online, my uneducated guess is that this is a very good filter and definitely not a cheap one.

[neuroanatomist]

Congrats on the lens! I would test the filter as previously suggested in this thread (by Brant, IIRC without going back a page). Promaster does not make filters (or anything else). They sell re-branded products, and in the case of filters, the OEM is Hoya. Hoya makes several lines of filters, sone of which are optically good (as good as B+W, but reportedly harder to clean). But, Hoya also makes some lines that are of pretty poor quality. Which line is rebranded as Promaster HGX? I don