May 21, 2009
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.
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
Overview of the smc PENTAX-DA18-55mmF3.5-5.6AL WR lens
Overview of the smc PENTAX-DA50-200mmF4-5.6ED WR lens
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 | - | - |