Product Description
This new rectilinear 15-30mm f3.5-4.5 EX Aspherical DG DF lens provides focal
lengths from 15mm ultra-wide angle to 30mm wide-angle and is the first of its
kind in the world.
This lens has minimum focusing distance of 11.8 inches (30 cm) at all focal
lengths with 110.5 degrees (wide) to 71.6 degrees (tele) of angle of view.
(Maximum magnification is 1:6.)
It incorporates hybrid aspherical lens in the front lens group to minimize
distortion and astigmatism, and molded glass aspherical lens in the rear lens
group to minimize spherical aberration.
This lens equipped with dual focus mechanism and also inner focusing system. It
is easy to hold the lens, since the focusing ring does not rotate during auto
focusing, and yet it provides adequate torque of the focusing ring during manual
focusing the lens.
This lens is desirable and for digital SLR cameras also.? Its effective zoom
range will be 22.5mm-45mm wide angle zoom lens on most SLR digital cameras.
Sigma 15-30mm f3.5-4.5 EX Aspherical DG DF has a new mechanical design which has
six groups zoom system. This new mechanical design will minimize astigmatism for
all focal lengths.
This lens is equipped with a non-removable type lens hood (Petal-shaped) to
prevent extraneous light harmful for image quality.
This lens uses rear gelatin (insert type) filters.? The iris diaphragm has 8
blades to obtain beautiful out focus of image in the foreground and background.
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