Ricoh has announced a new HD Pentax-D FA645 35mm F3.5 wide-angle prime lens for its Pentax 645D/645Z medium format digital cameras.
HD PENTAX-D FA645 35mm F3.5 AL [IF] has a minimum focus distance of 0.3m, giving a maximum magnification ratio of 0.25x and acts as a 27.5mm (in 35mm terms) on a digital 645 body.
The lens has both high refractive index and hybrid aspherical elements, for optimizing peripheral brightness and compensate for chromatic and spherical aberrations, an HD coating to reduce flare and ghosting, and a protective SP coating to keep grime off of the front element. It has a 9-blade rounded aperture, internal focusing and is threaded for 82mm filters.
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