Upload & Sell: Off
I have the 75 f/1.8 for Leica M. It's optically the same according to Cameraquest. I think it's a good lens, but it will depend on your expectations. Its leaning is towards 'classical' rendering, meaning not bitingly sharp wide open with fairly weak corners. Stopped down a bit and it's very nice, but the corners never really catch up. It has a bit of CA and also exhibits LoCA quite strongly in the right situations. Lastly, in controlled testing it exhibited a fair amount of focus shift as it stopped down, but in real world use so far, it hasn't been that significant. The M version sells around $700, so I'd guess a similar price point for the SL version.