The lens-mount system was introduced by Minolta with the launch of the Maxxum AF 7000 (7000 AF in Europe and α-7000 in Japan) 35mm SLR film camera, the first camera to feature both integrated autofocus (AF) and motorized film advance.
The lens-mount system was carried over to the Sony Alpha series when Sony took over the brand.
The AF 100-300mm, built with 11 elements in 10 groups and two AD elements to help minimize chromatic aberrations, has 9 circular aperture blades, measures 75mm in diameter across and 100mm in length, has a minimum focusing distance of 1.5 meters, an electronic zoom mechanism, weighs 440 grams, and takes 55mm filters.
The lens is compatible with all Minolta and Sony A-mount cameras, including film and digital models, and when mounted on a digital SLR with an APS-C sensor, it is equivalent to a 150-450mm superzoom on a full-frame camera.
The lens, mounted on a Sony DSLR-A350, performs extremely well with high-contrast images that offer decent sharpness, better when stopped down to f/6.3 or f/8, and reminds us what the great 'Minolta colors' are all about.
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Sony DSLR-A350
The DSLR-A350, Sony's top-tier consumer SLR for 2008, fitted with a 14.2MP APS-C CCD sensor, has the second-highest pixel count for an APS-C format DSLR at the time of its launch (after the Pentax K20D, which has a 14.6MP CMOS sensor).
The camera has an electronically-controlled focal-plane shutter with a speed range from 30 to 1/4000 second, plus B, flash sync at 1/160 second, ISO sensitivity from 100 to 3200, a 2.7-inch 230,400 pixels LCD screen, and a unique Live View mode that no one else has. Metering is Multi-segment, Center-Weighted, and Spot.






























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