Quick answer
A pancake-style wide prime for Pentax APS-C giving about 32mm equivalent. It is a Limited lens with a metal body.
Pros
- Slim
- Metal build
- HD coating
Cons
- Slow aperture
- Not sealed
Verdict
Think of it as a tiny wide lens for Pentax.
About this lens
Pentax HD Pentax-DA 21mm f/3.2 ED AL Limited: a wide-angle prime lens with a 21mm focal length and a maximum aperture of f/3.2, made for Pentax K mount cameras, with extra-low dispersion glass. A compact, metal-bodied Limited-series prime for Pentax K-mount cameras.
Pentax HD Pentax-DA 21mm f/3.2 ED AL Limited specifications
What can you shoot with the Pentax HD Pentax-DA 21mm f/3.2 ED AL Limited?
- Street
- Travel
- Everyday
Its moderate maximum aperture works best in good light or with a higher ISO.
Full-frame equivalent and field of view
Calculated from the focal length and crop factor. Not measured.
| Sensor | Crop | Equivalent | Horizontal FOV | Diagonal FOV |
|---|---|---|---|---|
| Full frame | 1.0x | 21mm | 81.2° | 91.7° |
| APS-C | 1.5x | 32mm | 59.5° | 69° |
Frequently asked questions
What is the equivalent focal length?
About 32mm on a full-frame equivalent basis, a wide-normal view.
Is the Pentax HD Pentax-DA 21mm f/3.2 ED AL Limited a Limited lens?
Yes. It belongs to Pentax's Limited line of compact, metal-bodied lenses.
Is the Pentax HD Pentax-DA 21mm f/3.2 ED AL Limited sealed?
No. It is not sealed, so avoid rain and heavy dust.
Alternatives for Pentax K from other brands
All Pentax K lensesSame mount, overlapping focal range, closest maximum aperture first.
