You asked

Is the tamron 20mm f 2 8 di iii osd m1 2 good for landscape?

Yes, it's a good wide option for landscapes, as long as you shoot on full frame. At 20mm it gives you the big skies and strong foregrounds that the landscape guide describes as the classic approach. It's also small and inexpensive, which helps when you're carrying gear up a hill.

Landscape work usually happens between f/8 and f/11, so the f/2.8 maximum aperture matters less here. Its close focus is a bonus for putting a rock or flower right up front.

The main caveat is APS-C. There it frames like a 30mm on full frame, which is too tight for most landscapes. On full frame, a high-resolution body such as the Sony a7R IV suits this lens well. If you want more range, a wide zoom covers more ground.

Written by Claude from this site's pages.

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