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PENTAX KAF2 |
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200mm
(equivalent 307mm) |
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F2.8 |
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F22 |
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9 elements in 8
groups |
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8.1 degrees
(w/PENTAX DSLR) |
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3.9' (1.2m) |
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0.20X |
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77mm |
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Fully Automatic |
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9 |
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N/A |
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N/A |
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PH-RBK 77mm |
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O-LC77 |
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S120-160 |
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3.3 x 5.3" (83
x 134mm) |
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29.1 oz. (825g) |
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Supersonic
motor, Quick-shift focus, SP (Super Protect) coating, Filter window |
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The two new fast telephotos smc PENTAX-DA* 200mm F2.8 ED [IF] SDM and smc PENTAX-DA* 300mm F4.0 ED [IF] SDM are not only optically astounding but also support the ultrasonic autofocus drive system for fast and quiet operation.
Special optical glass including ED glass elements, aspherical lens elements and outstanding lens coating provide for excellent contrast characteristics, a consistent edge-to-edge sharpness and a particularly clear rendition of fine details.
As well as the outstanding imaging attributes, PENTAX engineers have raised the mechanical characteristics of the lenses to a state-of-the-art level. Built-in ultrasonic motors (Supersonic Motors) in the lenses provide for extremely quiet and fast autofocusing. Both lenses are also weatherproofed and protected from penetrating dust by appropriate seals. The front lens elements of the lenses use the special Pentax SP - "Super Protect" - fluoride coating technology. This nano-technology protects the front lens against dust, finger marks or smearing, making the lenses exceptionally easy to clean. The Pentax "Quick Shift Focus System" allows the photographer to manually alter the focus point at will without having to take the camera out of the autofocus mode.
• High performance telephoto lens
• SDM system creates smoother, quieter auto focus
• Weather resistant and dust resistant body
• Quick-shift Focus System for instant switching from auto focus to manual focus
• PENTAX SP coating protects the exposed lens elements
• ED elements compensate for chromatic aberration
• Developed specifically for PENTAX digital SLRs
• Focal length equivalent to 300mm in the 35mm format
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