You asked

Tamron sp af 180mm f 3 5 di ld if macro 1 1 vs canon 180mm f 3 5?

The site doesn't have a page for a Canon 180mm f/3.5, so I can't compare the two directly. What I can tell you is about the Tamron. It's a 180mm f/3.5 macro that reaches life size (1:1) and has a long working distance, which is handy for insects or skittish subjects. It's autofocus, not stabilised, and made for full-frame sensors. It mounts on Canon EF and Nikon F, and it works on APS-C bodies too, where it frames tighter, like about 288mm on Canon.

If you're weighing it against a Canon-branded lens, check that lens's own page on this site before deciding. The Tamron 180mm page has the full list of compatible cameras.

Written by Claude from this site's pages.

From these pages