Pentax DA 55mm F:1.4 SDM

Pentax DA 55mm F:1.4 SDM When mounted on a PENTAX digital SLR camera body, this medium-telephoto lens offers a focal length of 84.5mm in the 35mm format. Coupled with its large F1.4 maximum aperture, it is ideal for portraiture applications.

A newly developed Aero Bright Coating enhances image-description performance by effectively reducing reflections over a wider wavelength range. Compared to conventional multi-coatings, this new coating greatly improves light transmittance in the lens, while drastically reducing flare and ghost images that deteriorate image quality.

A combination of the latest optical design and a round-shaped diaphragm assures soft, beautifully obscured out-of-focus description, maximizing the advantage of a large-aperture lens in shallow depth-of-field applications.

Super-low-dispersion optical element is incorporated into the optics for effective compensation of a variety of aberrations.

The advanced SDM mechanism assures extra-smooth, super-quiet autofocus operation using a supersonic motor installed in the lens body. Thanks to its SDM-exclusive autofocus system, the lens is designed to be quite compact, despite its large maximum aperture.