This website may place cookies on your computer to help us improve your personal user experience. Please read our privacy policy to learn more about cookies.

HD PENTAX-DA 645 28-45mm F4.5 ED AW SR - Specifications

Product data
Article Number 26390
Release date Nov 30, -1
Technical Specifications
Focal Length 28-45mm
Equivalent to 35mm format 22-35.5mm (with 645D/645Z body)
Maximum aperture F4.5
Number of Diaphragm Blades 9
Angle of View 89-63° (wiith 645D/645Z body)
Construction 17 elements in 12 groups
Smallest object distance 0.4m (1.32ft)
Magnification 0.21x
Filter size 82mm
Mount 645AF2
Weight Approx.1470g /51.9 oz (with hood Approx.1530g)
Dimensions (Length x Diameter) 151.5mm x Approx.99mm (6.0 inch x 3.9 inch)
Special Features

Fully Automatic

Rounded aperture (28mm:F4.5-6.3, 45mm:F4.5-8)

Inside lens shake reduction

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.

to top