TTartisan’s new 50mm F2 lens on a Sony a7R IV. .
Optics manufacturer TTartisan has announced two upcoming manual prime lenses: a 35mm F2 APO ASPH lens for Leica M-mount and a 50mm F2 lens for full-frame mirrorless camera systems. .
TTartisan 50mm F2.
TTartisan’s new 50mm F2 is constructed of six elements in five groups with the two rear-most elements being High-Refractive Index (HR) elements.
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