Voigtl nder ultra wide heliar 12mm f 5 6 aspherical iii vs ttartisan 11mm f 2 8 fisheye?

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From Voigtländer Ultra Wide-Heliar 12mm f/5.6 Aspherical III: Voigtländer Ultra Wide-Heliar 12mm f/5.6 Aspherical III: A prime lens by Voigtländer for Full frame cameras, 12mm f/5.6. Discontinued, but common used. Specs - Maker: Voigtländer - Focal length: 12mm (prime) - Maximum aperture: f/5.6 - Made for: Full frame sensors - Mounts: Sony E, Leica M - Stabilised: no - Autofocus: no, manual focus What it frames like - On full frame (Sony E, Leica M): as marked, 12mm. - On APS-C (Sony E): like 18mm ...

From TTArtisan 11mm f/2.8 Fisheye: TTArtisan 11mm f/2.8 Fisheye: A prime lens by TTArtisan for Full frame cameras, 11mm f/2.8. Specs - Maker: TTArtisan - Focal length: 11mm (prime) - Maximum aperture: f/2.8 - Made for: Full frame sensors - Mounts: Sony E, Nikon Z, Canon RF, L-Mount, Leica M, Canon EF, Nikon F - Stabilised: no - Autofocus: no, manual focus What it frames like - On full frame (Sony E, Nikon Z, Canon RF, L-Mount, Leica M, ...

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