Round-shaped diaphragm for beautiful out-of-focus rendition
Premium quality of the Limited Lens-series
New HD coating
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.
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.
This lens uses a new-generation multicoating that reduces the reflection rate in the visible spectrum up to 50% more than conventional multicoating. This enables the reduction of flare and ghosting for the shooting of clear, high-contrast images even under backlighting and other adverse conditions.
Pentax DA 21mm F/3.2 AL Limited Specs
21mm (35mm Equivalent Focal Length: 31.5mm)
Angle of View
Minimum Focus Distance
7.9" / 20.07 cm
8 Elements in 5 Groups
49 mm (Front)
Dimensions (ø x L)
2.5 x 1" / 63.5 x 25.4 mm
4.2 oz / 119 g
What's in the box
1x HD PENTAX-DA 21mm F3.2 AL Limited Lens (Silver)