Sigma announce 18-50mm f/2.8 EX DC for Dynax 7D

New DC lens for Konica Minolta Dynax 7D digital SLR

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Sigma 18-50mm f/2.8 EX DCThis lens offers a large aperture of f/2.8 over its entire range of focal lengths and its large depth of field offers greater freedom of creative expression. This EX series lens boasts excellent engineering and new technology.
The use of two aspherical lens elements provide correction for various aberrations and makes high quality images a reality throughout the entire zoom range.
The characteristics of digital SLR cameras were taken into consideration when designing the lens power layout, especially for effective compensation of lateral chromatic aberration, which is likely to occur with digital SLR cameras.
Most appropriate coating for digital products, Super Multi Layer (SML) coating gives the best colour balance and reduces flare and ghosting from which digital cameras tend to suffer. This lens has excellent correction for vignetting which is a common problem of large aperture lenses. Its new design ensures superior peripheral brightness. Angle of view will be equal to 28-77mm lens with Konica Minolta Dynax 7D digital SLR.

Lens construction 15 Elements in 13 Groups.
Angle of view 76.3°-31.6°.
Number of diaphragm blades 7pcs.
Minimum aperture f/22.
Minimum focusing distance 28cm (11in.).
Maximum magnification 1:5.
Filter size φ67mm.
Hood Type Petal hood.
Dimensions φ74.1mm×83.6mm (2.9in.X 3.2in).
Weight: 445g (15.7 oz.).

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