Pentax ZX-M Digital Camera User Manual


 
SIGMA
AF LENSES FOR CANON, MINOLTA, NIKON, PENTAX &SIGMA
CAMERAS & LENSES
159
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AF Lenses for Canon, Minolta, Nikon, Pentax and Sigma
As the world’s largest independent manufacturer of zoom and fixed focal length lenses, Sigma offers a highly innovative and
creative selection of lenses ranging from 8mm to 800mm and virtually everything in between. The lenses offer a high level of
performance, easy handling and advanced optical precision to create profound and emotional images. Sigma lenses are built
with corresponding mounts to make them
fully compatible with the SA-7 and SA-9QD
as well as digital cameras from Canon,
Minolta, Nikon and Pentax.
In addition, Sigma offers a number of lenses
designed specifically for digital SLR cameras,
which can also be used with 35mm SLRs.
They are mostly wide-angle and wide zoom
type lenses with large apertures (e.g. 20mm
f/1.8, 24mm f/1.8, 28mm f/1.8, 24-70mm
f/2.8, 15-30mm f/3.5-4.5), and feature
superior light distribution, so that there is
minimal light fall-off or vignetting, even
when used at maximum aperture.
These lenses are designated DG type, and are part of Sigma’s EX series of lenses. Remember that the digital imaging device
is generally much smaller than a 35mm negative, so the lens will have a longer “effective” focal length. The conversion factor
is generally about 1.5x, so a 14mm lens effectively becomes about 21mm when used on these digital cameras. As a result,
there are few choices available for wideangle lenses, or even fast “normal” lenses, for these digital cameras. The DG lenses
help fill this void.
ULTRA WIDE-ANGLE LENSES
14mm f2.8 EX Aspherical
The world’s shortest focal length non-fisheye wide-angle AF lens with a fast f2.8 maximum aperture and
a close focusing distance of only 7.1˝. The lens also incorporates a built-in “Perfect-Hood” lens hood and
a gelatin filter holder behind the rear lens element. T
he AF drive for Nikon and Canon feature the ultra-
quiet Hyper Sonic Motor (HSM). Includes padded case.
For Canon
(SI1428ACAF).................................899.00 For Nikon (SI1428ANAF) ...........................899.00
For Minolta
(SI1428AMAF) .............................899.00 For Sigma SA (SI1428ASA) ........................899.00
For Pentax AF
(SI1428APAF)......................................................................................................................899.00
8mm f4 EX Circular Fisheye
This circular image focus fisheye lens captures a 180° view in all directions in a 22.08mm circle. In addition,
it is useful for technical applications with solid angle measurement, such as the angle of view through the
window with driver in the car or the pilot in the cockpit of an airplane. It accepts removable gelatin filters in
a holder near the rear of the lens. The optical materials used are lead and arsenic free ecological glass.
For Canon
(SI84CAF) .........................................609.00 For Nikon (SI84NAF) ........................................609.00
For Minolta
(SI84MAF)........609.00 For Sigma SA (SI84SA)...609.00 For Pentax AF (SI84PAF).....609.00
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