Chinese optics manufacturer TTartisan has announced its latest lens, the 90mm F1.25 for Leica M-mount camera systems.
The lens, which is clearly designed to look like a first-party Leica lens, is constructed of 11 elements in 7 groups, including four high-refractive index elements. Other features include a ten-blade aperture diaphragm, a one meter (3.3’) minimum focusing distance and an aperture range of F1.25 through F16.
Due to the large elements needed to get such a fast aperture at a 90mm focal length, the lens is rather unwieldy, weighing 1013g (2.23lbs) and measuring in at 97mm (3.82”) long and 82mm in diameter. TTartisan has included a built-in tripod mount towards the rear of the lens, which should help to keep weight distribution more even when used on a tripod/monopod.
The lens also features a reversible lens cap that doubles as an integrated lens hood. As displayed in the illustration above, all you need to do is remove the front cap, unscrew the cover, flip the cap over and screw it onto the lens’ 77mm front filter thread. Below is a gallery of sample images taken with the lens: