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The black HD Pentax DA 15mm f/4 ED AL Limited Lens from Pentax is a compact prime wide-angle lens providing a 35mm-equivalent focal length of 23mm. The lens' optical design includes features extra-low dispersion glass and one hybrid aspherical elements to minimize chromatic aberrations and limit distortion in order to enable a natural-looking expansive angle of view that is well-suited to both indoor and outdoor scenes. A high-grade multi-layer HD coating has been applied to lens elements to help minimize flare and ghosting for enhanced contrast, clarity, and color fidelity and a rounded seven-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.
- The compact form-factor of this lens integrates Pentax's Quick-Shift Focus System, which allows manual focus control over the lens at any time, even in AF mode, for precise handling over the focal plane.
- Prime wide-angle lens provides a 35mm-equivalent focal length of 23mm, covering an expansive 86° angle of view.
- Optical design utilizes extra-low dispersion glass and a hybrid aspherical element to provide greater sharpness and clarity while minimizing flare and ghosting.
- High-grade multi-layer HD coating minimizes lens flare and ghosting to enhance contrast and color neutrality.
- Quick-Shift Focus System enables manual focus control at all times for precise handling that is well-suited to selective focus imagery.
- Super Protect coating helps to protect the front lens element from dirt and finger marks.
- Built-in pull-out type lens hood helps to protect the front lens element from stray light as well as scratching or accidental drops.