This is not a new lens and it has been available in Leica M mount since 2019.
The optical design of the lens consists of 13 elements in 11 groups and it also features 10 aperture blades.
The front filter diameter is 72mm and the minimum focusing distance is 50cm (19.68″).
The lens weighs in at 422g (14.88 oz) in Sony E mount and 458g (16.15 oz) in Nikon Z mount. The lens comes with a detachable lens hood and a metal lens cap.
Price & Availability
The TTArtisan 21mm F1.5 retails for $249 USD in Sony E mount and $245 USD in Nikon Z mount on Amazon. The Pergear online store has the TTArtisan 21mm F1.5 in Nikon Z mount for $239 USD and the lens in Sony E mount for $239 USD. The lens is now available to purchase in both mounts.
Interestingly enough, the Sony E mount and Nikon Z mount versions of this lens are significantly cheaper than the Leica M version which retails for $429 USD.
This is a fast, wide, full-frame lens that certainly looks to be interesting given its low price.