35mm Full-frame image sensor compatibleCompact, lightweight body and excellent cost performanceHD coating to optimize light transmittance and minimize reflectionWeather-resistant construction against humidity and dustQuick-Shift Focus System to instantly change the AF mode to MF by twisting the focus ringSP (Super Protect) Coating applied to the front surface of the lens to effectively repel water and greaseDC Motor to assure smooth, quiet and high-speed autofocus operationHigh-precision aspherical optical elements, ED (Extra-low Dispersion) glass optical element and Anomalous-dispersion glass optical element, to deliver bright, sharp images with minimal chromatic and spherical aberrationsRounded diaphragm to produce a beautiful bokehFocal Length 28-105mmEquivalent to 43-161mm in 35mm format (when attached to PENTAX APS-C size DSLR cameras) Maximum aperture F3.5-5.6 Minimum aperture F22-38 Number of Diaphragm Blades 9Rounded diaphragm (28mm: F3.5-6.3 105mm: F5.6-10)Diaphragm control : Fully Automatic Angle of View 75-23.5° when attached to PENTAX 35mm full-frame SLR cameras,53-15.5° when attached to PENTAX APS-C size DSLR cameras Construction 15 elements in 11 groups Smallest object distance 0.5m (1.64 ft.) Magnification 0.22x Filter size 62mm Mount KAF3 Weight approx. 440g / with hood approx. 463g Dimensions (Length x Diameter) approx. 86.5mm x 73.0mm Kit Content Lens Hood PH-RBC62Lens Cap O-LC62Lens Mount Cap K Special Features HD Coating, SP (Super Protect) CoatingWR (Weather Resistant)DC MotorQuick-shift Focus System Optional Accessories Lens Case S80-120
