Sigma 18-50mm F2.8 DC DN Contemporary is an Auto Focus (AF)
Standard Zoom lens with APS-C / DX max sensor coverage and it is designed to be used with L-Mount mount cameras.
Lens Mount
Sigma 18-50mm F2.8 DC DN Contemporary is compatible with cameras that have
L-Mount lens mount. Some of the latest released cameras with L-Mount lens mount are
Leica T Typ 701,
and
.
Sensor Coverage
Max sensor coverage of Sigma 18-50mm F2.8 DC DN Contemporary is
APS-C / DX.
Focal Range
Sigma 18-50mm F2.8 DC DN Contemporary has a focal range of 18-50mm and 2.8X zoom ratio.
Optical Image Stabilization
Sigma 18-50mm F2.8 DC DN Contemporary doesn't have an optical image stabilization system so the only option to stabilize the image taken with this lens is to mount on a camera body with IBIS (sensor based In-body image stabilization).
Body Colour
Sigma 18-50mm F2.8 DC DN Contemporary is available in color.
Zoom Method
Sigma 18-50mm F2.8 DC DN Contemporary features
Rotary (extending) zoom method where the length of the lens changes as you zoom in or out. This makes it possible to design the lens with a smaller minimum length ( generally when it is zoomed out) compared to internal zoom lenses. The disadvantages of this design are being harder to seal against dust and moisture, weight balance shifting while zooming and zoom creep in certain lenses.
Aperture
Sigma 18-50mm F2.8 DC DN Contemporary is a fixed aperture lens with a constant max aperture of f2.8 from 18mm all the way to the 50mm .
Optical Formula
Sigma 18-50mm F2.8 DC DN Contemporary's optical formula consists of 13 elements in 10 groups. Following special elements are used in this design:
- 1 Super Low Dispersion
- 3 aspherical elements
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