Manufacturer’s Description

The Pentax DA * 50-135mm F2.8 ED (IF) telephoto zoom lens is designed for exclusive use with Pentax digital SLR cameras, delivering the highest level of ultimate optical image quality. With spherical elements, special optical-glass elements and original lens coatings, this lens is superior in terms of contrast, clarity and edge-to-edge sharpness. The 50-135mm features tightly sealed, weather-resistant and dust-resistant construction to enhance durability for use in rain or dusty conditions. A new SDM system has been incorporated for smoother, quieter autofocusing operation using a built-in supersonic motor. It also features the Pentax-original Quick-Shift Focus System for instant switching to manual-focus operation and Pentax-original SP (Super Protect) coating to repel dust, water and grease.

The Specs

Physical Specifications
Length 5.4 in
Dimensions 5.40" Length x 3" Diameter
Diameter 3 in
Weight 1.51 lbs
Other Features
Included Components smc DA * 50-135mm F2.8 ED (IF) SDM Telephoto Zoom LensLens CapRear Lens Cap BLens HoodLens Soft Case
Warranty
Warranty Information 1 Year Limited Warranty
More Info
URL http://www.ricoh-usa.com
Additional Specifications
Brand Name Pentax
Max Aperture at Min Focal Length f/2.8
Lens Construction 18 Elements in 14 Groups
normalized-Weight 24.16
Frequency Band Three ED elements compensate for chromatic aberrationFocal length equivalent to 76.5mm to 207mm in the 35mm format
Min Aperture Value f/22
Product Series DA
Angle of View 32? to 12?
Product Line smc
Optics
Minimum Angle of View 12
Maximum Angle of View 32
Filter Size Supported 67 mm
Min Focus Distance 3.3 ft
Min Focal Length 50 mm
Quick Glance
Lens Type Telephoto Zoom
Max Aperture f/ 2.8 (Wide)
Compatible Camera Mount Pentax Digital SLR Cameras
Max Focal Length 135 mm
Min Aperture f/ 22

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