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HD PENTAX-DA 20-40mm F2.8-4 ED Limited DC WR - Specifications

Product data
Article Number 23000
Release date Nov 7, 2013
Technical Specifications
Series

HD PENTAX-DA

Focal Length

20-40mm

Equivalent to 35mm format

30.5-61.5mm

Maximum aperture

F2.8-4

20-23 mm: F2.8
24-33 mm: F3.5
34-40 mm: F4

Minimum aperture

F22-32

Number of Diaphragm Blades

9

Rounded aperture (20mm: F2.8-4   40mm: F4-5.6)

Angle of View

70-39° 

Construction 9 elements en 8 groups
Smallest object distance

0.28m (0.9 ft.)

Magnification

0.20×

Filter size

55mm

Mount

KAF3

Weight

Approx. 283 g  (avec pare-soleil, approx.291 g)

Dimensions (Length x Diameter)

Approx. 68.5mm x 71mm ( 2.7 inch x 2.8 inch)

Kit Content

Lens hood MH-RA55
Lens cap O-LW65A
Lens case P70-150

Special Features

Weather Resistant
HD Coating
SP (Super Protect) Coating
Quick-shift Focus System

In order to discover the products which are being developped and the ones which are planned, you can download our roadmap in pdf:

To see our K-mount currently available range, please download Lenses & Accessories brochure.

Visit the PENTAX Lens Technology web page to discover more about the PENTAX lens construction.

Read more about the PENTAX Focus Function here.

You can use the PENTAX Lens Glossary to learn more about its features.

Want to know more about PENTAX lenses and how to choose the correct one ? Watch our video with professional photographer Kerrick James eplaining that there is a lens for every photographer by clicking here.

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