Leica apo summicron sl 75mm f 2 asph vs sigma 70mm f 2 8 dg macro art?

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From Leica APO-Summicron-SL 75mm f/2 ASPH: Leica APO-Summicron-SL 75mm f/2 ASPH: A prime lens by Leica for Full frame cameras, 75mm f/2. Specs - Maker: Leica - Focal length: 75mm (prime) - Maximum aperture: f/2 - Made for: Full frame sensors - Mounts: L-Mount - Stabilised: no - Autofocus: yes What it frames like - On full frame (L-Mount): as marked, 75mm. - On APS-C (L-Mount): like 112mm on full frame; f/2 gives about the depth of field of f/3 there. ...

From Sigma 70mm f/2.8 DG Macro Art: Sigma 70mm f/2.8 DG Macro Art: A macro lens by Sigma for Full frame cameras, 70mm f/2.8. A sharp life-size macro lens; never made for Nikon F. Specs - Maker: Sigma - Focal length: 70mm (macro) - Maximum aperture: f/2.8 - Made for: Full frame sensors - Mounts: Canon EF, Sony E, L-Mount - Stabilised: no - Autofocus: yes What it frames like - On full frame (Canon EF, Sony E, L-Mount): as marked, 70mm. - ...

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