(From Pentax lens literature) Pentax SMC DA* 55mm ƒ/1.4 SDM Lens
Features:
- When mounted on a Pentax digital SLR camera body, this medium-telephoto lens offers a focal length of 80mm 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 lens performance by eƒ/fectively reducing reflections over a wider wavelength range. Compared to conventional multi-coatings, this new coating greatly improves light transmittance through the lens, while drastically reducing flare and ghosting that deteriorate image quality.
- Rounded diaphragm blades create a more circular aperture for smooth, beautiful bokeh at large aperture settings.
- The advanced SDM mechanism assures extra-smooth, super-quiet autofocus operation using a supersonic motor installed in the lens body. With an SDM exclusive autofocus system, the lens is designed to be quite compact, despite its large maximum aperture.
