|APO||The lens incorporates low dispersion elements to minimize chromatic aberrations and ensure excellent sharpness and contrast even at maximum aperture.|
|T*||The multi-layer coating is applied to the surface of lens elements. It boosts light transmission, ensures sharp and high contrast images, minimizes ghosting and flares.|
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|Maximum format:||35mm full frame|
|Diagonal angle of view:||3.1° (35mm full frame)|
|Lens construction:||8 elements in 6 groups, including:|
|Number of blades:|
|Closest focusing distance:||400 cm|
|Maximum diameter x Length:||Ø128.5 x 505 mm|
Design and Features
By using special glasses in this 800 mm Tele-Apotessar T* f/8 lens it was possible to achieve almost perfect correction of chromatic aberration. The lens provides excellent image quality throughout the entire focusing range from infinity to 4 m. For focusing, two elements inside the lens are moved. The advantage of this internal focusing is good constancy of the center of gravity during focusing. Adjustable stops permit the preselection of two ranges, which is helpful in fast focusing.
The lens has a tripod socket. For changing from oblong to vertical format, lens and camera can be rotated around the lens axis after slackening a clamp screw.
2) On a tripod
|User Manual. English, Adobe PDF, 32 KB|