The 7Artisans 35mm 1.4 IF came as a bit of a surprise as it features an internal focus design. Something, which is still rarely seen among M-mount lenses and a novelty for 7Artisans. But does this also translate to superior optical qualities? Let us find out in this review! This lens will be reviewed on the 42mp Sony A7rII and the 24mp Leica M10.