This super wide lens uses an aspherical lens and extra-low dispersion (ED) glass lens to correct distortion and chromatic aberration for delineation performance. The curvature of the first lens front surface was reduced, and it supports use of a circular polarizing filter. The lens also includes a built-in retractable sliding flower-shaped hood.
High-grade HD coating for exceptional image rendition
Round-shaped diaphragm for beautiful out-of-focus rendition
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.
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.
* HD stands for High Definition, and signifies the lens’s capacity to reproduce images that excel in transparency, definition, resolution and 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.
Pentax DA 15mm F/4 ED AL Limited Specs
15mm (35mm Equivalent Focal Length: 23mm)
Angle of View
Minimum Focus Distance
7.1" / 18.03 cm
8 Elements in 6 Groups
49 mm (Front)
Dimensions (ø x L)
2.5 x 1.6" / 63.5 x 40.64 mm
6.7 oz / 190 g
What's in the box
1x HD PENTAX-DA 15mm F4ED AL LIMITED Lens (Silver)