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Pentax 645D 40-Megapixel Medium Format DSLR

A price/performance breakthrough?.

Pentax 645Z Overall

50-Megapixel Medium Format DSLR with Live View.

Pentax 645Z Image Quality

High end image quality, but what about lenses?.

Pentax 645 Lenses (645D tests)

A variety of 645 lens tests on the 645D.

Pentax SMC DA 645 25mm f/4 AL (IF) SDM AW

Ultra wide angle lens for Pentax 645..

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

Wide angle zoom for Pentax 645..

Pentax 645 90mm f/2.8 D FA 645 Macro ED AW SR

Medium telephoto macro lens for Pentax 645 digital and film..

Blog posts, reverse chronological


2021-02-21 Reader Comment: “painful to watch the slow death of Pentax”


2016-06-02 Pentax K1: Adapting Pentax 645 and Other Lenses to Pentax K

2016-02-20 Pentax K1: Adapting Pentax 645 and Other Lenses to Pentax K

2016-02-12 Pentax HD DA 28-45mm f/4.5 ED AW SR vs Pentax HD 35mm f/3.5: Bench (645Z)

2016-02-08 Pentax HD 35mm f/3.5 AL IF Aperture Series: Close Range, Dolls (645Z)

2016-02-07 Pentax HD DA 28-45mm f/4.5 ED AW SR Aperture Series @ 45mm: Riparian Forest (645Z)

2016-02-07 Pentax HD DA 28-45mm f/4.5 ED AW SR Aperture Series @ 28mm: Pescadero Creek Upstream Blue (645Z)

2016-02-06 Pentax HD 35mm f/3.5 AL IF Aperture Series: Pescadero Creek Upstream, Late Blue Dusk (645Z)

2016-01-30 Revisiting the Pentax 645Z with the Pentax 28-45mm and 35mm f/3.5


2015-11-11 Pentax 645Z Now $6996 + 4% Rewards

2015-07-29 Medium Format for $3999: Pentax 645D


2014-08-25 Pentax 645Z+ 90/2.8 Aperture Series: Various Varying Examples

2014-08-24 Pentax 645Z+ 90/2.8 Aperture Series: Wet Aspen Trunk

2014-08-24 Pentax 645Z+ 90/2.8 Aperture Series: Thunderstorms over Pine Creek Drainage

2014-08-24 Pentax 645Z+ 90/2.8 Aperture Series: 'Atlas Permaguard'

2014-08-20 Nikon D810 vs Pentax 645Z: Visual Impact Out in the Field with a Real Image (Comparison)

2014-08-18 Understanding the Pentax 645Z Histogram (useful for any brand camera)

2014-08-18 Back from Trip

2014-08-13 Field Shooting the Pentax 645Z

2014-08-10 Nikon D810 Highlight Priority Metering, Pentax 645Z notes, Leica T

2014-07-28 YAYF: Yet Another Yosemite Fire

2014-07-27 Pentax 645Z vs Nikon D810: Overarching Thoughts on Two Fine Cameras

2014-07-24 Pentax 645Z: Underexposing and Pushing by Up To Six Stops

2014-07-24 A conversation with Ming Thein on the Pentax 645Z and Nikon D810 and More

2014-07-23 Pentax 645Z: ISO and Noise from 100 to 204800

2014-07-22 Reader Comments: D810 Review, Lenses, etc

2014-07-21 Pentax 645Z: Various Notes

2014-07-20 Pentax 645z: Long Exposures

2014-07-18 Pentax 645z: Real-World Dynamic Range

2014-07-18 Nikon D810, Sigma 50/1.4, Pentax 645Z, Sigma dp2 Quattro

2014-07-16 Nikon D810: can it compete with Pentax 645Z?

2014-07-12 Pentax 645z: Shutter Vibration / Shutter Shock Analysis at 90mm

2014-07-10 Pentax 645z: Detail Rendition and Image Quality on Variety

2014-07-09 Pentax 645z Image Quality

2014-07-08 Pentax 645z: Noise from ISO 100 to ISO 204800 with RGB, Channels, Grayscale

2014-07-08 Pentax 645z: Handheld Portraits with the Pentax 90mm f/2.8

2014-07-06 Pentax 645z + 25mm f/4 Aperture Series: Blue Beater Bike

2014-07-05 Pentax 645z + 90mm f/2.8 Aperture Series: Mosaic

2014-07-05 Pentax 645z + 25mm f/4 Aperture Series: Mosaic

2014-07-04 Reviewed: 50-Megapixel Pentax 645z

2014-07-04 Is 50 Megapixels Sharper than 36 Megapixels?

2014-07-02 Pentax 645z: 50 Megapixels Arrives

2014-05-15 Pentax 645z: Hitting the Bullseye on Which Target?

2014-04-17 Pentax 645Z: Does Not Have EFC Shutter (Electronic First Curtain)

2014-04-17 Pentax 645D Images Updated to UltraHD, Large Crops

2014-04-17 Pentax 645D + Pentax-D FA 55mm f/2.8 AL[IF] SDM AW (in anticipation of the Pentax 645z)

2014-04-14 Pentax 645Z 51-Megapixel Medium Format DSLR, 13 Pentax Lenses Now Avail in USA


2013-04-27 Reader Comment: 40MP Pentax 645D vs 36MP Nikon D800

2013-03-11 Pentax 645D Rebate


2011-03-07 Pentax 645D + Pentax FA 35mm f/3.5

2011-02-04 Examples with Pentax 645D with Pentax-FA 400mm f/5.6 ED IF

2011-02-01 Pentax 645D + Pentax-A 55mm f/2.8

2011-02-01 Pentax 645D + Pentax SMC 67 45mm f/4

2011-02-01 Pentax 645D + Pentax FA 400mm f/5.6 ED IF

2011-01-21 Focusing the Pentax 645D with the Zeiss 3X loupe

2011-01-16 Pentax 645D lens tests

2011-01-15 More Pentax 645D lens tests coming

2011-01-06 Pentax 645D with Pentax-A 120mm f/4 — super!

2011-01-05 Focusing the Pentax 645D with camera focus assist

2011-01-04 Pentax 645D with Pentax-A 120mm f/4

2011-01-02 Reader comments on Pentax 645D review

2011-01-01 Pentax SMC FA 45-85mm f/4.5 on Pentax 645D

2011-01-01 Pentax 645D examples with 45mm f/2.8 and SMC FA 45-85mm f/4.5


2010-12-30 Pentax-A 200mm f/4 and 45mm f/2.8 on Pentax 645D

2010-12-29 Pentax 45mm, 45-85mm, 200mm lenses on Pentax 645D

2010-12-22 The Pentax 645D — go get one

2010-12-21 Pentax 645D review updates

2010-12-20 Pentax 645D review updated with more examples, conclusions

2010-12-19 Rain, rain go away

2010-12-19 Pentax 55mm f/2.8 for Pentax 645D != 40MP images

2010-12-18 Pentax-A 75mm f/2.8 lens test

2010-12-18 Pentax 645D compared to Canon 5D Mark II

2010-12-17 Pentax 645D review updated

2010-12-16 Pentax 645D review and examples

2010-12-15 Pentax 645D 40-megapixel testing in progress

2010-12-10 Second brand-new sample of Pentax-D FA 55mm f/2.8 has same hazing and scratch-like marks

2010-12-08 Pentax 645D 40 megapixel medium format camera coming soon

2010-09-20 Items of note at Photokina

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USB-C model also available

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