Pentax HD Pentax DA 21mm F3.2 AL Limited APS-C Lens (2013)

MSRP 500 USD59% Neofiliac
Keywords: aps-cautofocuscompactdslrk-mountlenspentaxprime-lenswide-angle

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Photo 0of Pentax HD Pentax DA 21mm F3.2 AL Limited APS-C Lens (2013)

Product Overview

HD Pentax DA 21mm F3.2 AL Limited is a wide-angle prime lens for Pentax K-mount. It covers the APS-C image circle. Introduced by Pentax in 2013, it has 8 elements in 5 groups.
As a wide-angle prime lens that is quite compact, the HD Pentax DA 21mm F3.2 AL Limited can be an interesting component of a prime-lens kit well adapted for travel. Even though the lens is not stabilized, at this focal range it does not usually matter. In fact, some may be able to get cleaner corners without image stabilization.

Ratings

What we found**

Neofiliac score 59% (not directly comparable across industries)
Pros
  • Very compact
  • Very light
Cons
  • Dark aperture
  • A bit expensive for an f/3.2 pancake
  • A bit weak on IQ

Price Comparison

Specifications

Construction

Aperture Blades
7 blades, Rounded aperture diaphragm
Colors
Black, Silver
Form Factor
Wide-Angle Prime Lens
Image Size
APS-C
Lens Barrel
Distance scale, DoF scale
Lens Mount
Pentax K-mount
Motor
Screw drive from camera
Optical Formula | Elements
8 elements
Optical Formula | Groups
5 groups
Optical Formula | Special Glass
High-grade multi-layer HD (High Definition) Coating groups

Dimensions

Filter Diameter
49 mm / 1.93 in
Size | Diameter
63 mm / 2.48 in
Size | Length
25 mm / 0.98 in
Weight
134 g / 4.73 oz

Function

Angle Of View
69.0° Diagonal | 59.5° Horizontal | 41.7° Vertical
Aperture
f/3.2 ~ f/22
Autofocus
Yes
Crop Factor
1.5
Focal Length
21 mm
Focal Length (35mm Equivalent)
31.5 mm
Image Stabilization
No

Performance

Max Magnification
0.17x
Min Focus Distance
200 mm / 7.87 in

Production

Accessory
Lens Hood: MH-RBB43 (supplied)
Debut
2013-08-27

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