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Pentax medium format

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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 @ 28mm: Pescadero Creek Upstream Blue (645Z)

2016-02-07 Pentax HD DA 28-45mm f/4.5 ED AW SR Aperture Series @ 45mm: Riparian Forest (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: 'Atlas Permaguard'

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

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 A conversation with Ming Thein on the Pentax 645Z and Nikon D810 and More

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

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

Pentax 645D 40-Megapixel Medium Format DSLR

A price/performance breakthrough?.

1. Pentax 645D Overview
2. Ergonomics
3. Blur from the Shutter at 300mm
4. Aspect Ratio of 4:3 vs 3:2
5. Glitches and Details
6. Cool Features
7. Focusing
8. Autofocus Assist With Manual Focus Lenses
9. Autofocus and Fine Focus Adjust
10. Manual focus with Zeiss 3X Loupe
11. Sensor Color Uniformity
12. Diffraction Effects at f/11 to f/16
13. Examples with D FA 55/2.8
14. Examples (UltraHD) in the Forest with D FA 55/2.8
15. Conclusions

Pentax 645Z Overall

50-Megapixel Medium Format DSLR with Live View.

1. 'CARD NOT FORMATTED' Bug
2. Severe Bug: Images Not Recorded
3. Glitches and Usability Issues
4. Image/Sensor Size, and 645Z Focal Length and F-Stop Equivalence vs DSLR
5. Medium Format vs Full Frame Considerations
6. Interpreting the 645Z Histogram
7. Shutter Vibration: Landscape and Portrait Orientation, 90mm
8. Pentax 645Z in Context of Nikon D810

Pentax 645Z Image Quality

High end image quality, but what about lenses?.

1. Pentax 645Z Diffraction Effects on Micro Contrast
2. Pentax 645Z with Adobe Camera Raw: AdobeStd or Embedded Profile?
3. Pentax 645Z Real-World Dynamic Range aka Faux HDR
4. Pentax 645Z: ISO 100 to 204800 (Red Tomato, Natural Light)
5. Pentax 645Z: ISO 100 to 204800 (Fruit Arrangement, Natural Light)
6. Pentax 645Z: Pushing Up to ~6 stops (Fruit Arrangement, Natural Light)
7. Pentax 645Z: Long Exposures
8. Pentax 645Z Examples: Portraits (90/2.8)
9. Pentax 645Z: 50 vs 36 Megapixels (25mm / 21mm, Matched Size)
10. Pentax 645Z: 50 vs 36 Megapixels (25mm / 21mm, Actual Pixels)

Pentax 645 Lenses (645D tests)

A variety of 645 lens tests on the 645D.

1. Examples with the FA 35mm f/3.5
2. Examples in the Rain with 75/2.8
3. Examples, Various
4. Examples with 400mm f/5.6 ED IF
5. Examples, Pentax-A 120mm f/4
6. Comparison vs Canon 5D Mark II
7. Pentax-FA 35mm f/3.5 AL (IF)
8. Pentax-A 45mm f/2.8
9. Pentax 67 45mm f/4
10. Aperture Series: Pentax-D FA 55mm f/2.8 AL[IF] SDM AW (Mosaic)
11. Pentax-A 55mm f/2.8
12. Pentax 67 55mm f/4
13. Pentax-FA 45-85mm f/4.5 @ 45mm
14. Pentax-FA 45-85mm f/4.5 @ 65mm
15. Pentax-FA 45-85mm f/4.5 @ 85mm
16. Aperture Series: Pentax-A 75mm f/2.8 (Mosaic)
17. Pentax-FA 80-160mm f/4.5 @ 80mm
18. Pentax-FA 80-160mm f/4.5 @ 120mm
19. Pentax-FA 80-160mm f/4.5 vs Pentax-A 150/3.5
20. Pentax-A 120mm f/4
21. Pentax-A 200mm f/4
22. Pentax 67 300mm f/4 ED IF
23. Pentax-FA 400mm f/5.6 ED IF
24. Table of Lenses for Pentax 645D

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

Ultra wide angle lens for Pentax 645..

1. Overview of Pentax SMC DA 645 25mm f/4 AL (IF) SDM AW

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

Wide angle zoom for Pentax 645..

1. Overview of Pentax HD DA 28-45mm f/4.5 ED AW SR
2. Aperture Series @ 28mm: Pescadero Creek Upstream, Late Blue Dusk (645Z)
3. Aperture Series @ 45mm: Riparian Forest (645Z)
4. Shootout vs 35/3.5: Bench (645Z)

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

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

1. Overview of Pentax 90mm f/2.8 D FA 645 Macro ED AW SR
2. Pentax 90/2.8 Focus Shift Assessment
3. Aperture Series @ 90mm (Dolls, 645Z)
4. Aperture Series: Mosaic (645Z)
5. Aperture Series: Decorated Bike (645Z)
6. Aperture Series: Pine Creek Thunderstorms (645Z)
7. Aperture Series: Wet Aspen Trunk (645Z)
8. Aperture Series: Still Life 'Atlas Permaguard' (645Z)
9. Aperture Series: Green Aspen Leaf on Black Rock (645Z)
10. Aperture Series: White Daisies (645Z)
11. Aperture Series: Dual Aspen Trunks (645Z)
12. Aperture Series: Pine Creek Buildings (645Z)
13. Aperture Series: Aspen with Black Branches (645Z)
14. Aperture Series: Mining Cabin Gearbox (645Z)
15. Aperture Series: Death Valley Alluvial Fan Near Eureka Dunes (645Z)

Nikon D810

Improvements on the workhorse D800E..

1. Nikon D810 + Zeiss Otus 55/1.4 APO vs Pentax 645Z (Pine Creek Sunflowers)

Blog posts, reverse chronological

2021

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

2016

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 @ 28mm: Pescadero Creek Upstream Blue (645Z)

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

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

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

2014

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: 'Atlas Permaguard'

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

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 A conversation with Ming Thein on the Pentax 645Z and Nikon D810 and More

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

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: Handheld Portraits with the Pentax 90mm f/2.8

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

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

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

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

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

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

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

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

2013-03-11 Pentax 645D Rebate

2011

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

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