We have become used to lens manufacturers adapting its DSLR lenses to modern mirrorless mounts. Now TTartisans is doing the opposite - finally offering its budget-priced fisheye lens in versions that will Canon EF and Nikon F DSLRs.
The new version offers a 180° angle of view on full-frame DSLRs. The manual-focus lens is constructed using 12 elements in 10 groups, including four high refractive index glass elements that help to control distortion and spherical aberrations. An extra-low dispersion element is also used to reduce color fringing and chromatic aberration.
The fisheye has a ten-blade iris, and has a built-in clickable aperture ring. The minimum focus distance is 25cm (10in), with a minimum aperture setting of f/16. Its all-metal barrel is etched with traditional engraved depth of field and focusing scales.
Fisheye lenses are designed to give a much wider angle of view that normal ultra-wide lenses, by allowing a degree of distortion that would not usually be tolerated in optical design. This useful for photographing in confined spaces - but the barrel distortion can also be used creatively to give an unusual view of a subject.
The TTartisan 11mm fisheye is already on sale, costing $235 / £249.