Is the canon ef 35mm f 1 4l usm sharp wide open?

I don't have sharpness test results for the Canon EF 35mm f/1.4L USM, so I can't tell you how it performs at f/1.4. What the lens page does cover is that it's a full-frame prime with an f/1.4 maximum aperture and autofocus, and that on APS-C it frames like a 56mm lens. You can read the full specs and the list of cameras it fits on its catalogue page.

For a sense of what wide-open shooting involves, the lenses guide explains what the f-number means for light and blur. If you're shooting people, the portraits guide notes that at f/1.4 the depth of field can be thinner than a face, so stopping down to f/2.8 is often the safer choice.

Written by Claude from this site's pages.