You asked

Is the panasonic leica dg 12mm f 1 4 sharp wide open?

I don't have a sharpness test for this lens, so I can't tell you how it performs wide open. What I can tell you is what the page covers: it's a 12mm f/1.4 prime for Micro Four Thirds, it frames like a 24mm on full frame, and it has autofocus but no stabilisation. You can see the full spec list and the cameras it fits on its catalogue page.

For the general side of wide-open shooting, the aperture notes explain what f/1.4 gives you in light and blur. The portrait guide covers how thin focus gets at f/1.4 and when stopping down to f/2.8 helps.

Written by Claude from this site's pages.

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