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Pentax HD DA 28-45mm f/4.5 ED AW SR Aperture Series @ 45mm: Riparian Forest (645Z)

Pentax HD DA 28-45mm f/4.5 ED AW SR

Get Pentax 645 and Pentax 28-45mm f/4.5 at B&H Photo.

The Pentax HD DA 28-45mm f/4.5 ED AW SR is equivalent to a 23-36mm lens on a full frame DSLR (long frame dimension).

At about $4697 it’s a substantial investment, but it does cover a very useful range. The main thing is that it is huge and heavy, much more so than its 35mm f/3.5 sibling.

This outdoor far-field scene explores the consistency of sharpness across the field at a uniform distance at the 45mm zoom setting, giving an excellent insight into what apertures are required for peak quality.

Pentax HD DA 28-45mm f/4.5 ED AW SR Aperture Series: Riparian Forest

Includes image sizes up to 25 MP , along with very large crops, at f/4.5, f/5.6, f/9, f/11 plus RawDigger exposure info.

This finely detailed image cries out for viewing on the iMac 5K (or at least a 4K display) so as to render the fine details of twigs and bark and moss in a far more compelling way than a standard display.

Riparian Forest along Pescadero Creek
f9 @ 20.0 sec, ISO 100; 2016-02-05 17:28:50
PENTAX 645Z + HD PENTAX-DA 645 28-45mm F4.5ED AW SR @ 45mm

[low-res image for bot]
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Sony FE 20mm f/1.8 G Lens
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