TTartisan 50mm F1.4 Manual Focus Full-Frame Format Standard & Medium Telephoto Lens Compatible with Leica M-Mount, Leica M240, Leica M3, Leica M6, Leica M7, Leica M8, Leica M9, M9p, M10

It's a "decent" lens. Shooting wide open in mid-day is where this lens falls down.I would just spend the money on a Voigtlander and be done with it.

I bought the 35mm 21mm and 50mm all from the seller "Emgreat-CA". The 3 lenses were all shipped together and too exactly 14 days to arrive via DHL (It would have been sooner but the day i ordered was a chinese multi day holiday).These lenses are incredible. I've been using a 35mm Summicron ASPH for the past 5 years and I'm going to sell it for twice the amount of money I paid for all 3 of these lenses.The 35mm and 50mm are great, very sharp, wonderful to use (I'm usually an F8 shooter, but I've done plenty of testing at F 1.4 to ensure focus is ok. I did have to adjust focus very slightly on the 50mm when it arrived. The 21mm is a bit soft wide open at 1.5 - but not too bad.Super happy with the purchase of these lenses!

All I can say is that just like it’s 35mm 1.4 counterpart, this lens is so good, good enough that I sold both 35mm and 50mm summiluxs in favor of the two TTARTISAN version. I shoot commercial photography for high end clients, and this 50mm is next level. ASPH 1.4 for 500 Aussie bucks. You gotta be kidding me. We’ve done a load of tests side by side, and the office prefers the TTARTISAN over the summilux. Waiting for them to release a 75mm and we will jump on that no doubt too. Don’t second guess or hesitate, you won’t regret it. Build quality is premium too. We’ve been lucky enough that both lenses have come calibrated straight out of the box. So my guess is the Amazon ones are solid QC.