| The Zeiss Sonnar Superachromat CFi 250mm f/5.6 lens is a special purpose lens with unique optical design which gives perfect chromatic correction with sacrificing correction for distortion or other aberrations. It is an ideal lens for scientific applications, especially multi-spectral photography and many other fields. Spectral range of 400 - 1000nm. CF lenses constitute Hasselblad's main lens series with focal lengths from 30mm to 500mm and are intended primarily for the 500 series cameras. They have built-in leaf shutters with speeds up to 1/500th second and flash sync on all speeds. The CFi is the new improved CF series with increased contrast, upgraded shutter components, a locking PC-socket for flash sync cords, a redesigned and smoother focusing mechanism, a reinforced rear bayonet plate, a non-metallic front bayonet which withstands wear substantially better than the previous design and a new exterior design. CFE lenses have all the features of CFi lenses and also include the databus contacts for complete compatibility to the 200 series cameras.
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