EX (EX Lens)
The exterior of this lens is EX-finished to denote the superior build and optical quality, and to enhance its appearance.

ASP (Aspherical Lens)
The aspherical lens complex allows freedom of design, improved performance, a reduced number of component lenses and a compact size.

RF (Rear Focus)
This lens is equipped with a system that moves the rear lens group for highspeed , silent focusing.

DG (DG for DIGITAL & FILM)
These are large-aperture lenses with wide angles and short minimum focusing distances. With an abundance of peripheral illumination, they are ideal lenses for Digital SLR Cameras whilst retaining suitability for traditional 35mm SLRs.

20mm f/1.8 EX DG ASPHERICAL RF

Wide angle lens with large aperture and superior peripheral brightness

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.

Minimum focus distance of 20cm
The minimum focusing distance of this lens is 20cm and it has maximum magnification of 1:4 with fast F 1.8 maximum aperture. The minimum focusing distance of 20cm and 94.5 degree angle of view allow close up photography surrounding the photographic subject.

Handling
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.

Incorporated aspherical lenses
The use of aspherical lens elements in both of the front and rear lens groups effectively compensates for distortion, spherical aberration and astigmatism.

Price: £288

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Lens Construction
13 Elements in 11 Groups

Angle of View
94.5 degrees

Number of Diaphragm Blades
9 Blades

Minimum Aperture
F22

Minimum Focusing Distance
20cm

Maximum Magnification
1:4

Filter Size
82mm

Dimensions
Diameter 88.6mm X Length 89.5mm

Weight
520g