You asked
Is the canon ef 35mm f 1 4l usm good for landscape?
It's a reasonable choice, but the site doesn't rate it specifically for landscapes. On full frame it frames as a standard 35mm, which is a fine width for scenes with a bit of foreground, and the f/1.4 maximum aperture matters less here. Landscape work usually means stopping down and using a tripod, as landscape explains, so the camera body counts for more than the lens's speed.
If you're pairing it with a full frame body, the Canon EOS 5D Mark IV and Canon EOS 6D Mark II are both on the page as compatible. If you want something wider for landscapes, the Canon EF 16-35mm f/4L IS USM is a wide zoom for Full frame cameras and may suit the job better.
Written by Claude from this site's pages.