The Sigma 70-200mm f/2.8 EX DG APO OS HSM for Sony is the
second generation of large-aperture telephoto zoom lenses incorporating
Sigma's OS (Optical Stabilizer) anti-shake system. It offers the
equivalent of shooting at shutter speeds 3 to 4 stops slower than
without OS, thus allowing handheld telephoto zoom shooting even in
poorly lit conditions. Its HSM ensures quiet and high speed AF as well
as full-time manual focusing.
It features a large maximum aperture
of f/2.8 that remains constant throughout the zoom range, making it
incredibly valuable when shooting in low light situations such as
wedding or other events. It is also great when shooting fast-moving
subjects such as sports, when fast shutter speeds are needed to capture
fleeting moments. The 70-200mm f/2.8 is fast and versatile and at a
length of 7.8 (19.8cm) will be a tool that seldom sees the inside of
your camera bag. The lens comes with a petal-type lens hood plus an
adapter to extend its length for users with APS-c cameras.
This lens is optimized for full-frame Sony DSLRs and may also be used
with smaller APS-c size sensors but it will increase focal length to
about 100-300mm with most cameras.
Note: When using
the OS function of the lens with a camera which incorporates a
stabilizer unit, please turn the camera's stabilizer unit off.
Note! Optical Stabilizer (OS) function will not work with film SLR cameras.
Sigma's New APO 70-200mm F2.8 EX DG OS HSM is the second
generation of this large aperture telephoto zoom lens now incorporating
Sigma's Optical Stabilization (OS) anti-shake system. It uses two
sensors inside the lens to detect vertical and horizontal movement of
the camera. It works by moving an optical image stabilizing lens group,
to effectively compensate for camera shake.
Two FLD ("F" Low Dispersion) glass elements, which have the
performance equal to expensive fluorite glass, and three SLD (Special
Low Dispersion) glass elements, combine to provide excellent reduction
of aberrations and image quality.
The rounded 9 blade diaphragm creates an attractive blur to the out of focus images (bokeh).
Sigma has managed to make the lens more compact than its predecessor, measuring only 7.8" (8.64cm) in length.
The Super Multi-Layer lens coating reduces flare ghosting and
assures high image quality throughout the entire zoom range.