Sigma 24mm f/1.8 EX DG lens

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Sigma 24mm f/1.8 EX DG
Sigma 24mm f1.8 EX DG.jpg
Maker Sigma Corporation
Technical data
Type wide angle lens
Focal length 24 mm
Crop factor 84 degrees (FX or 35mm), 62 degrees ( DX or APS-C)
Aperture (max/min) f/1.8, f/22
Close focus distance 18 cm
Max. magnification 1:2.7
Construction 10 elements in 9 groups
Short back focus n/a
Ultrasonic motor n/a
Lens-based stabilization No No
Macro capable Yes Yes
Unique features Very fast maximum aperture
Application low-light, landscape, macro, general purpose wide angle
Max. length 82 mm
Diameter 84 mm
Weight 485 g
Filter diameter 77mm
Lens hood included (bayonet)
Case included (soft)
Angle of view
Horizontal 73 degrees (FX or 35mm)/54 degrees (DX or APS-C)
Vertical 54 degrees (FX or 35mm)/37 degrees (DX or APS-C)
Diagonal 84 degrees (FX or 35mm)/62 degrees (DX or APS-C)
Retail info
MSRP $450 (street price $340) USD

The Sigma 24mm f/1.8 EX DG is wide-angle lens which features a fast f/1.8 maximum aperture for use in low-light situations, and macro focusing capability to a reproduction ratio of 1:2.7. It uses aspherical lens elements. Though intended for 35mm film and full-frame digital SLRs, this lens is available for several makes of APS-C digital SLR cameras, where the angle of view is similar to a moderate wide-angle lens (in the 35mm-40mm range, depending on the size of the D-SLR sensor).

This lens is capable of macro photography, with minimum focusing down to 18 cm/7.1" (reproduction ratio 1:2.7). It incorporates a floating focus system in order to minimize distortion, spherical aberration and astigmatism, and provides high performance at all shooting distances. The high reproduction ratio and wide angle of view allow capturing high quality images not only of a subject but also the surrounding scenery.


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