Pentax 645 HD DA 28-45mm F/4.5 ED AW SR Lens

Image Stabilized LensImage Stabilized LensWeatherproof - Seals protect from dust, humidity and light splashing.Weatherproof - Seals protect from dust, humidity and light splashing.Zoom LensZoom LensRectilinear are normal lenses that show straight lines as straight lines.Rectilinear are normal lenses that show straight lines as straight lines.Thread size in milimeters for screw-on filters.Thread size in milimeters for screw-on filters.82Quick-Shift Autofocus, also called Direct Manual-Focus (DMF).Quick-Shift Autofocus, also called Direct Manual-Focus (DMF).

Lens Description

The Pentax 645 HD DA 28-45mm F/4.5 ED AW SR is an ultra-wide to normal zoom designed for cameras with a 645D (0.8X) sensor. This constant-aperture zoom covers a 28 to 45mm focal-range. It provides the same field of view as a 22.4-36mm lens on a Full-Frame camera. An optical Image Stabilization System built into this lens compensates for camera shake.

This 2X zoom lens focuses down to 40cm from the imaging plane, capturing subject with a maximum 0.21X magnification. The lens offers a Quick-Shift AF system which lets the user simply rotate the focus-ring to focus manually. While this lens is capable of AF, it does not have a built-in focus motor. It can only focus with a compatible camera body which features a mechanical AF-coupling.

The lens weighs 1.47kg. Its body is weatherproof against adverse weather such as rain and snow. Seals in key areas prevent entry of water and dust.

This lens is only available for the Pentax 645 mount. It directly attaches and is fully compatible with all Pentax 645 mount cameras with 645D (0.8X) sensors.

Pentax 645 HD DA 28-45mm F/4.5 ED AW SR
Buy from Amazon
Pentax 645 HD DA 28-45mm F/4.5 ED AW SR

Focal-Range

25mm90mm
28-45mm
FOCAL-RANGE OF WEATHERPROOF Pentax 645 MOUNT LENSES WITH AT LEAST 645D (0.8X) COVERAGE

Angle-Of-View

42.5°95°
63-89°
ANGLE OF VIEW OF WEATHERPROOF Pentax 645 MOUNT RECTILINEAR LENSES WITH 645D (0.8X)+ COVERAGE

Maximum Aperture

2.84.5
4.5
MAXIMUM APERTURE OF WEATHERPROOF Pentax 645 MOUNT LENSES WITH AT LEAST 645D (0.8X) COVERAGE

Viewing Angle Range

Pentax 28-45mm F/4.5

Maximum Aperture

Compared to other Pentax 645 645D (0.8X) lenses.
63-89°
Max F/4.5

Magnification

0.11X1X
0.21X
MAGNIFICATION OF Pentax 645 MOUNT LENSES WITH AT LEAST 645D (0.8X) COVERAGE

Weight

416g1470g
1470g
WEIGHT OF WEATHERPROOF Pentax 645 MOUNT LENSES WITH AT LEAST 645D (0.8X) COVERAGE

Pentax 645 HD DA 28-45mm F/4.5 ED AW SR Specifications

Brand Pentax Model 645 HD DA 28-45mm F/4.5 ED AW SR
Mount Pentax 645 Max FLM 0.8X
Focal Range 28 - 45mm View Angle 89 - 63°
Max ApertureF/4.5Min ApertureF/32
Min Focus40cmMagnification0.21X
Filter Size82mm Aperture Blades9
Size (D x L)99 x 152mm Weight1470g
TiltN / A ShiftN / A
Stabilization Built-In ProtectionWeatherproof
Zoom Drive Mechanic Focus Drive AF with Quick-Shift
Zoom Mechanism External Focus Mechanism External
Hood Bayonet Focus Motor External
Perspective RectilinearIntroduced2014-08-04

Updates

    2024.11.18

  • 2024.11.18

    Best 2024 Photography Gifts for Every Budget Update Poster

    Best 2024 Photography Gifts for Every Budget

    Great gifts for photographers and photo enthusiasts selected for every budget among the best products of 2024.

  • 2024.08.07

  • 2024.08.07

    Eye Protection Tips for Professional Photographers Update Poster

    Eye Protection Tips for Professional Photographers

    The four main considerations for professional photographers regarding eyewear.

  • 2024.07.14

  • 2024.07.14

    Fujifilm X100VI Review Update Poster

    Fujifilm X100VI Review

    Flagship fixed-lens compact digital camera with a 40 MP sensor and Image-Stabilization, a first for the series. Retro design featuring dual control-dials, plus direct ISO, Shutter-Speed and EC dials. Its hybrid viewfinder can switch between EVF and OVF mode.

  • 2024.05.09

  • 2024.05.09

    Fujifilm GFX100 II Review Update Poster

    Fujifilm GFX100 II Review

    Flagship 102 Megapixels Medium-Format Mirrorless Digital Camera with 8-Stop 5-Axis IBIS, 8 FPS Drive, 8K Video and 400 MP Super-Resolution capture in a weatherproof and freezeproof body with dual control-dials and dual memory-card slots.

  • 2024.04.03

  • 2024.04.03

    Fujifilm X-T5 Review Update Poster

    Fujifilm X-T5 Review

    Newest Fujifilm flagship boasting a 40 MP APS-C sensor, 5-axis IBIS with 7-stop efficiency, 15 FPS continuous drive, 6.2K Video capture, dual control-dials and dual SDXC UHS-II slots in a sturdy weatherproof and freezeproof body.

  • 2023.11.20

  • 2023.11.20

    Best Digital Cameras of 2023 Update Poster

    Best Digital Cameras of 2023

    Find out which are the Best Digital Cameras of 2023. All the new Mirrorless Digital Cameras from entry-level to high-end professional.

  • 2023.07.10

  • 2023.07.10

    Fujifilm X-H2 Review Update Poster

    Fujifilm X-H2 Review

    40 Megapixels APS-C Hybrid Mirrorless Digital Camera with 7-stop IBIS. Fastest shutter ever and 8K video capture. Large builtin EVF with 0.8X magnification and 5.8 MP, plus an Eye-Start Sensor. Packed with features and large number of controls in a weatherproof and freezeproof body.

  • 2023.05.07

  • 2023.05.07

    Sony FE 20-70mm F/4G Review Update Poster

    Sony FE 20-70mm F/4G Review

    Review of the unique Sony FE 20-70mm F/4G lens. The optical zoom of this lens spans ultra-wide-angle and medium focal-length coverage, making it one of the most versatile Full-Frame lenses on the market.

  • 2023.01.15

  • 2023.01.15

    Huion Inspiroy Dial 2 Review Update Poster

    Huion Inspiroy Dial 2 Review

    Review of the Huion Inspiroy Dial 2 tablet, a medium sized drawing surface with dual dials and customizable buttons. Connects via USB-C or Bluetooth 5.0 with Windows, Linux and Android support.

  • 2022.12.08

  • 2022.12.08

    How to Pack for a Photo Trip Update Poster

    How to Pack for a Photo Trip

    Find out how to pack for a travel photography trip, carry your gear safely while meeting airline regulations.

Please Support Neocamera

All information on Neocamera is provided free of charge yet running this website is a huge endeavor. Purchases made via affiliate links found throughout the site help keep it running and up-to-date. There is no additional cost to you, so please consider buying via these links to our affilates:

  • Best Buy Banner
  • Photography Store Banner
  • BH Photo Banner
  • Adorama Banner

If you found any information on this site valuable and did not purchase via our affiliate links, please considering donating via PayPal:

Any amount will be greatly appreaciated. Thank you for your support!

Pentax 28-45mm F/4.5 Facts

Pentax 645 HD DA 28-45mm F/4.5 ED AW SR
Image Stabilized LensImage Stabilized LensWeatherproof - Seals protect from dust, humidity and light splashing.Weatherproof - Seals protect from dust, humidity and light splashing.Zoom LensZoom LensRectilinear are normal lenses that show straight lines as straight lines.Rectilinear are normal lenses that show straight lines as straight lines.Thread size in milimeters for screw-on filters.Thread size in milimeters for screw-on filters.82Quick-Shift Autofocus, also called Direct Manual-Focus (DMF).Quick-Shift Autofocus, also called Direct Manual-Focus (DMF).
28-45mm Focal-Range F/4.5 Constant Aperture
82mm Filter Thread AF with Quick-Shift
Pentax 645 Mount 645D (0.8X) Coverage
1470g Lens Weight 99 x 152mm (D x L)
Buy from these sellers: Buy From Amazon.com

Camera Bag

Clear

Your camera bag is empty. To add a camera or lens click on the star next to its name.

Your camera bag is empty.

Add cameras or lenses by clicking on the star next to their name.

New Cameras & Lenses