You asked
7artisans m 75mm f 1 25 ii vs 7artisans m 75mm f 1 25?
Both pages list the same specs: a 75mm manual-focus prime, a maximum aperture of f/1.2, full-frame use, Leica M mount, and no stabilisation. The only difference between them is the name, so I can't tell you from this site what changed in the "II" version, and I won't guess.
The title says f/1.25, but the spec line says f/1.2, so go by the spec.
Either one fits the same Leica M bodies, from the M9 through the M11 family and the M EV1. On full frame it frames as marked at 75mm, a classic portrait length. For how that framing changes on other sensors, see the Focal length converter, and for choosing a focal length, see portraits.
Written by Claude from this site's pages.