May 21, 2009
The smc PENTAX-DA18-55mmF3.5-5.6AL WR and
the smc PENTAX-DA50-200mmF4-5.6ED
WR
Compact, lightweight, weather-resistant zoom lenses designed
for exclusive
use with digital SLR cameras

HOYA CORPORATION PENTAX Products is pleased
to announce the launch of two compact, lightweight zoom lenses: the smc PENTAX-DA18-55mmF3.5-5.6AL
WR, and the smc PENTAX-DA50-200mmF4-5.6ED WR. Featuring a newly designed, simplified
weather-resistant construction, these zoom lenses offer excellent reliability
in various outdoor applications — especially in rain, fog and mist.
Major Features
-
Simplified weather-resistant construction
The new zoom lenses feature a simplified weather-resistant construction designed
to minimize the intrusion of water and moisture into the lens barrel. With
these lenses mounted on PENTAX weather-resistant digital SLR camera bodies,
the user is assured of improved durability and reliability during shooting
in rain, fog or mist and at locations subject to a spray or splash of water.
-
SP coating to block dust and dirt
The front surface of these lenses is treated with PENTAX-original SP (Super
Protect) coating, which applies a special fluorine compound to the lens surface
through a vapor deposition process. This SP coating not only effectively
repels dust, water and grease, but it also makes it easy to wipe off fingerprints
and cosmetics.
-
Digital-SLR-exclusive optical design
PENTAX has optimized the characteristics of these lenses — including
lens coating, curvature and positioning of optical elements — to reproduce
the finest possible digital images. As a result, they are practically free
of flare and ghost images, and bring out the best in the PENTAX digital SLR
camera bodies they are coupled with. Their image circle is also perfectly
proportioned to the size of the image sensor used in PENTAX digital SLR cameras,
helping to reduce the camera’s overall size and weight and guarantee
outstanding cost performance.
-
Quick-Shift Focus system for instant AF/MF switching
After the subject is captured in focus by the camera’s AF system, the
unique Quick-Shift Focus system lets the photographer instantly switch to
manual-focus operation for final pinpoint focus adjustment.
-
Other features
- Durable, dependable metallic lens mount
- Lens hood with a PL (polarizing filter) window included as a standard
accessory
Overview of the smc PENTAX-DA18-55mmF3.5-5.6AL WR lens
- This standard zoom lens covers focal lengths from 27.5mm wide angle to 84.5mm moderate telephoto (in the 35mm format). Incorporating a high-performance aspherical (AL) optical element and a super-low-dispersion glass optical element in its optics, it assures outstanding image resolution and remarkable brightness, even at the edges, while effectively compensating various aberrations.
Overview of the smc PENTAX-DA50-200mmF4-5.6ED WR lens
- This telephoto zoom lens covers focal
lengths from 76.5mm moderate telephoto to 307mm super telephoto (in the 35mm
format). Incorporating an extra-low dispersion (ED) glass optical element
in its optics, it assures excellent description of the subject in various
telephoto applications, including portraiture, sports/action and landscape,
while effectively compensating chromatic aberration over the entire zoom
range.
Specifications
| |
smc PENTAX-DA
18-55mmF3.5-5.6AL WR |
smc PENTAX-DA
50-200mmF4-5.6ED WR |
| Lens mount |
PENTAX KAF mount |
PENTAX KAF mount |
| Lens Construction |
11 elements in 8 groups |
11 elements in 10 groups |
| Angle of View |
76 - 29° (wiith PENTAX D-SLR camera body) |
31.5 - 8.1° (wiith PENTAX D-SLR camera body) |
| Aperture control |
Automatic |
Automatic |
| Minimum Aperture |
F22-38 |
F22-32 |
| Number of Diaphragm Blades |
6 |
6 |
| Minimum Focusing Distance |
0.25m (0.82 ft.) |
1.1m (3.6mft.) |
| Filter size |
52mm |
49mm |
| Maximum Magnification |
0.34x |
0.24x |
Dimensions
(Maximum Diameter x Minimum Length) |
68.5mm x 67.5mm (2.7 inch x 2.7 inch ) |
69mm x 79.5mm (2.7 inch x 3.1 inch) |
| Weight |
230g / 8.1 oz. (with hood 255g / 9.0 oz.) |
285g / 10.1 oz. (with hood 325g / 11.5 oz.) |
| Lens Hood |
PH-RBC52mm |
PH-RBD49mm |
| Tripod adapter |
- |
- |
- PENTAX and smc PENTAX are trademarks of HOYA CORPORATION.
- Design and Specifications is subject to change without notice.