Is the laowa 15mm f 2 zero d sharp wide open?

I don't have test results on how sharp the Laowa 15mm f/2 Zero-D is at f/2, so I can't say whether it's sharp wide open. What I can tell you is that it's a manual-focus prime for full frame, and that f/2 is a fast aperture for astro, where it lets in plenty of light for star shots. On APS-C it frames like 22mm (Sony and Nikon) or 24mm (Canon). You can see the full list of supported cameras on the Laowa 15mm f/2 Zero-D page. If you want to know what f/2 means for light and depth of field, the Lenses guide explains the aperture numbers.

Written by Claude from this site's pages.