Seems a good combo. because Leica lenses are compact. Fit the BF body well.
Honestly, trying this setup was a huge disappointment. Youd think the Leica L-mount glass would be a perfect match for that Sigma BF but the ergonomics are just terrible. Even the smaller primes feel completely unbalanced and make the camera tip forward constantly. Autofocus performance was another issue... it just isnt as fast or reliable as it should be for the price youre paying, ngl. Definitely wouldnt recommend it if youre planning on shooting handheld all day because your wrists are gonna hate you. The lack of a decent grip on the Sigma fp makes the whole experience feel really clunky and kinda risky, like youre gonna drop the whole thing if you arent careful.