|Format: APS-C (crop)|
Type: Zoom lens
Focusing: Auto Focus (AF)
Lens mounts: Canon EF, EF-S, Sony A / Minolta A, Nikon F (FX, DX), 4/3 (Four/Thirds), Pentax K, Sigma SA
Optical design: 15 elements in 13 groups.
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Views (2906)Average price: $633
|Focal length||Max. aperture||Min. aperture||Blades||Min. Focus (m.)||Filter Ø (mm.)||Weight (gr/oz)||Length (mm/in)|
|18mm - 50mm||f/2.8||f/22||7||0.28||72||445/15,7||84.1/3,3|
The Sigma AF 18-50 mm f/ 2.8 EX DC Macro is a standard zoom lens for 35 mm SLR cameras of popular autofocus systems.
EX series is a professional line of Sigma lenses, remarkable for its high mechanical and optic quality.
DC series is a line of Sigma lenses optimized for digital SLR APS-C cameras.
The focusing is internal, the front element does not rotate during focus operations.
The Sigma AF 18-50 mm f/ 2.8 EX DC Macro replaced the Sigma AF 18-50 mm f/ 2.8 EX DC. Later on (presumably in 2008) Sigma went on producing this lens with a hyper sonic motor.
Posted by: temas Date of publication: 04.06.2011