Best wide angle lens for the canon eos r7?

For the Canon EOS R7, I'd start with the Sigma 10-18mm f/2.8 DC DN Contemporary. It covers the same 16-29mm full-frame equivalent as the Canon options, and its f/2.8 opening is the fastest of the group, which helps in dim interiors and at dusk.

If you'd rather stay with Canon, the Canon RF 10-20mm f/4L IS STM reaches a little wider and has the L-series badge. The Canon RF-S 10-18mm f/4.5-6.3 IS STM is the lightest, cheapest route into ultra-wide shooting.

For a wider zoom range, the Tamron 11-20mm f/2.8 Di III-A RXD is worth a look.

If you're not sure you want to shoot ultra-wide all the time, the focal length converter helps you check how each lens frames on the R7.

Written by Claude from this site's pages.