Product Information
This super-wide-angle lens is ensured minimal light-fall-off with superior peripheral brightness. The iris diaphragm has 9 diaphragm blades to obtain beautiful out of focus images in the foreground and background. This is an ideal DG lens optimized Digital SLR camera.The minimum focusing distance of this lens is 20cm (7.9 inch) and it has maximum magnification of 1:4 with fast F 1.8 maximum aperture.The lens incorporates Dual-Focus (DF) mechanism. It is easy to hold the lens, since the focusing ring does not rotate during auto-focus, yet it provides adequate focusing torque of the focusing ring during manual focusing of the lens. The rear focus system eliminates the need for the front of the lens to rotate, thus allowing the use of a "Petal-type hood", which is superior light blocking effect.The use of aspherical lens elements in both of the front and rear lens groups effectively compensates for distortion, spherical aberration and astigmatism.Product Identifiers
eBay Product ID (ePID)99699541
Product Key Features
MountNikon F
Focal LengthFixed/Prime, 20mm
Maximum Aperturef/1.8
SeriesSigma EX
TypeWide Angle
Focus TypeAuto & Manual, Fixed/Prime
Additional Product Features
Aperturef/1.8
Compatible BrandSigma
Min Aperture22
Additional Tech CharacteristicsDg Ex RF Asp
Diameter3.5in
Focal Length (mm)20mm
Camera TypeSLR
Product LineSigma Ex