Name: smc DA 21mm f/3.2 AL Limited
Brand: Pentax
SKU: 610
Rating: 3.9 (9 reviews)

Pentax smc DA 21mm f/3.2 AL Limited front

3.7

based on all reviews

Contrast and colour rendering are excellent
useful hyperfocal scale is marked on the lens barrel
it locks onto subjects quickly and accurately

An attached filter will not rotate while focusing
the filter ring does not rotate
The front element does not rotate so using a polarizer is no problem

Elements: 8
Autofocus: yes
Max format size: APS-C (crop)
Focal length: , 21 mm
Image stabilisation: no
Lens type: Normal

Pentax smc DA 21mm f/3.2 AL Limited - Pros & Cons

Contrast and colour rendering are excellent
useful hyperfocal scale is marked on the lens barrel
it locks onto subjects quickly and accurately
itself very resistant to flare and contrast levels remain good
higher sharpness and better uniformity than
The lens is really well built
It is quite sharp even wide open and gets better stopped down
A pleasure to carry and useful in many situations
It makes for a very compact SLR

An attached filter will not rotate while focusing
the filter ring does not rotate
The front element does not rotate so using a polarizer is no problem
optical system sharpness is a little disappointing
vignetting can still be seen at f4 in the corners
Chromatic aberration is more troublesome
modest falloff in brightness at the corners of the frame
only a marginal improvement
weather sealing
5% barrel distortion in the corners
that is not ideal
The lens is somewhat soft at f/3
somewhat boring stretched effect of ultra-wides

Pentax - Video Reviews (1)

Pentax smc DA 21mm f/3.2 AL Limited - Full Specifications

Lens type	Normal
Lens mount	Pentax KAF

Aperture max	3.2
Aperture min	22
Aperture ring	no
Number of diaphragm blades	7

Elements	8
Groups	5

Weight	4.94 oz
Diameter	2.48 in
Length	0.98 in
Filter size	1.93 in

Max Format size	APS-C
Focal length	< 21
Maximum magnification	0.17 x
Image stabilisation	no

Autofocus	yes
Autofocus motor type	Screw drive from camera
Full-time Manual focusing	yes
Closest focusing distance	0.2
Focus features	Floating focus

Colour of product	Black Silver
Tripod collar	no
Hood supplied	yes

Pentax smc DA 21mm f/3.2 AL Limited - Q&A

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Pentax smc DA 21mm f/3.2 AL Limited Pentax - Editorial Reviews (4)

3.5

Based on 4 reviews

Pentax smc DA 21mm f/3.2 AL Limited Pentax HD DA 21mm F3.2 AL Limited Review

PCMAG

Published: 22.11.2013

Pentax HD DA 21mm F3.2 AL Limited Review

3.5

The Pentax HD DA 21mm F3.2 AL Limited isn't the sharpest lens wide open, but it's impressively small and well built.

Pentax smc DA 21mm f/3.2 AL Limited Pentax HD DA 21mm f3.2 AL Limited lens review: Enhanced image quality

DXOMARK

Published: 13.01.2014

Pentax HD DA 21mm f3.2 AL Limited lens review: Enhanced image quality

Pentax has revamped the DA Limited lens range adding a rounded diaphragm opening and new HD coatings for improved rendering, transmission and lower ghosting and flare. Read on to find out how well the new HD DA 21mm f3.2 pancake model performs.