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 aspherical elements, The tightly sealed, weather-resistant and dust-resistant construction enhances durability for use in both rainy and dusty conditions, making it a perfect companion for the weather-resistant PENTAX DSLR bodies. The SDM focus system incorporated in this lens results in a smoother, quieter autofocusing operation using a built-in supersonic motor.

• Specifications:
• Lens Mount:
• PENTAX KAF2 Mount
• Lens Construction: 18 elements in 14 groups
• Angle of View: 31.5 - 11.9 degrees (when used with PENTAX Digital SLR camera body)
• Aperture Control: Automatic
• Minimum Aperture: F22
• Number of Diaphragm Blades: 9
• Metering System: TTL open-aperture metering
• Minimum Focusing Distance: 1.0m
• Filter Size: 67mm
• Maximum Magnification: 0.17X
• Dimensions (diameter x length): 3.0" x 5.4" (76.5mm x 136mm)
• Weight: 24.2 oz. (685g) without hood, 27.0 oz. (765g) with hood