TTArtisan — manual 11mm f/2.8 full-frame diagonal fisheye across mirrorless and SLR mounts
The 11mm f/2.8 fisheye filled a gap TTArtisan identified for an affordable full-frame diagonal fisheye built for mirrorless mounts, an area previously dominated by adapted DSLR fisheyes, following the firm's pattern of releasing one design across many current mounts at once.
Mirrorless versions use 11 elements in 7 groups with a built-in petal hood and no filter thread, focusing manually to 0.17m through a 7-blade aperture to f/16. SLR-mount versions use a revised 12-element, 10-group formula with 0.25m minimum focus. Weight ranges roughly 439-600g by mount.
Coverage is a full 180-degree diagonal angle of view on full-frame sensors, producing the strong barrel distortion and immersive perspective typical of circular-format diagonal fisheyes rather than a rectilinear ultra-wide, making it a specialist creative tool rather than an everyday lens.
TTArtisan sold this fisheye across Sony E, Nikon Z, Canon RF, L-mount and Fujifilm GF mirrorless fittings, plus Nikon F and Canon EF SLR mounts with the different formula above. Used buyers should confirm which optical version they are getting, since mirrorless and SLR variants differ.