The new TTartisan 28mm f/5.6 lens for Leica M-mount is priced at $300 – see the details at PhotoRumors:
The new TTartisan 28mm f/5.6 lens for Leica M-mount is now available for pre-order
Additional information on the TTartisan 28mm f/5.6 lens for Leica M-mount can be found here:
