The Pentax HD DA 40mm F2.8 Limited interchangeable lens [21390-400] is designed for use with K-mount lens-interchangeable digital cameras. These lenses add the state-of-the-art HD coating and a round-shaped diaphragm, to deliver even higher digital imaging.
Developed based on the Limited Lens series — renowned for the meticulous finish in every detail from the outstanding image rendition to the high-quality, hand-machined aluminum body — these new lenses assure even better optical performance than the original Limited Lens-series models. They are treated with the HD coating, which assures much higher light transmittance than conventional multi-layer coatings to deliver sharp, clear images free of flare and ghost images, even under such demanding conditions as backlight. They also feature a completely round-shaped diaphragm to produce a natural, beautiful bokeh (out-of-focus) effect in the foreground and background.
- High quality finish and excellent optical performance
- Equivalent to 61 mm in 35mm film format
- High Definition Coating
- Round shaped diaphragm
High-grade HD coating for exceptional image rendition
All lenses are treated with HD coating,* a high-grade multi-layer lens coating that assures higher light transmittance and lower reflectance than conventional multi-layer coatings. As the result, they produce sharp, clear images free of flare and ghost images, even under such adverse lighting conditions as backlight.
* HD stands for High Definition, and signifies the lens’s capacity to reproduce images that excel in transparency, definition, resolution and rendition.
Round-shaped diaphragm for beautiful out-of-focus rendition
All lenses feature a completely round-shaped diaphragm to optimize the performance of their distinctive optics. This diaphragm produces a natural, beautiful bokeh (out-of-focus) effect, while minimizing the streaking effect of point light sources.
Premium quality of the Limited Lens-series
While inheriting the design concept of the Limited Lens series, these lenses were designed by combining a series of mechanical and numerical evaluations with human assessment of test-shooting samples to assure the ultimate in image reproduction. Their optical design has been optimized for digital photography to deliver sharp, clear images with outstanding contrast, even at the maximum aperture. In addition, their lens barrel, hood and cap are all made of a high-grade aluminum material, hand-machined for perfect proportions and beautiful texture.
Equivalent to 61 mm in 35mm film format
Fast manual focusing in AF mode with Quick Shift focus system
Super Protect coating of the front lens element for effective protection against dirt and finger-marks
Compact and lightweight - 'Pancake Lens'