Improved lens coatings for digital SLR cameras
By employing multi-layer coatings on cemented surfaces of plural elements and new multi-layer coating technology on ordinary elements, ghosting and flare due to reflections that occur when light enters through the front element and reflections from the mirror-like surface of a digital image sensor are reduced to the absolute minimum.
Additionally, upgraded advanced quality control raises the level of resolution performance standards and prevents flare due to aberrations, resulting in a telephoto zoom lens suitable for photography with digital SLR cameras.
Macro of 1:2 in telephoto zoom range
Flipping a macro switch in the focal length range of 180mm to 300mm allows entry into the macro range, for photography as close as 95cm from the subject. In the macro range, one can take advantage of the telephoto effect and a maximum magnification ratio up to 1:2. (In normal shooting ranges, the minimum focus distance is 1.5m (59″).) In addition, since the focal length in the macro range spans from 180mm to 300mm, zooming can also be used to adjust composition.
Designed for use on both digital SLRs and 35mm film cameras
The ultra-long telephoto zoom covering up to 465mm equivalent can be used on a digital SLR camera, while the wide-end 70mm can be used with a conventional 35mm film SLR camera for portraits and other moderately mid-range shots.