Pentax 70mm f/2.4 SMC DA Limited

Ultra-thin, super lightweight design, Minimum Aperture: f/22 Focal length equivalent to 105mm in the 35mm format with ist & K-series DSLRs High-grade aluminum construction in the lens barrel, hood, and cap, SP coating helps protect the lens against dust, water, and grease Quick-shift Focus System for instant AF to MF switching eveloped specific... moreally for Pentax digital SLR's, with an image circle perfectly proportioned for a digital sensor

The silver HD Pentax DA 70mm f/2.4 Limited Lens from Pentax is a prime portrait-length lens providing a 35mm-equivalent focal length of 105mm. This short-telephoto 23° angle of view is well-suited to portrait and landscape shooting as well as general long lens applications. A high-grade multi-layer HD coating has been applied to lens elements... moreto help minimize flare and ghosting for enhanced contrast, clarity, and color fidelity and a nine-blade diaphragm contributes to an aesthetic out-of-focus quality to benefit shallow depth of field imagery. Additionally, an SP Protect coating has also been applied to the front lens element to effectively protect it from dirt, oil, and finger prints.