I took a chance on this little TTArtisans LTM lens because a Leica version would be 70 years old and very expensive. Turns out it is built like a little tank and is eye-popping sharp! The M mount version is generally available from B&H or Adorama but the LTM version can only be obtained on eBay directly from China. With adaptors I've used it on my Nikon Z bodies and it excels. I can highly recommend it. The Cinestill film is made from color movie stock and is very low contrast giving a distinctly legacy cinema look.