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Pentax 645D vs Pentax K10D

Portability
50
Imaging
76
Features
52
Overall
66
Pentax 645D front
 
Pentax K10D front
Portability
59
Imaging
48
Features
43
Overall
46

Pentax 645D vs Pentax K10D Key Specs

Pentax 645D
(Full Review)
  • 40MP - Medium format Sensor
  • 3" Fixed Display
  • ISO 200 - 1600
  • No Anti-Alias Filter
  • No Video
  • Pentax 645AF2 Mount
  • 1480g - 156 x 117 x 119mm
  • Released March 2010
  • Later Model is Pentax 645Z
Pentax K10D
(Full Review)
  • 10MP - APS-C Sensor
  • 2.5" Fixed Display
  • ISO 100 - 1600
  • Sensor based Image Stabilization
  • No Video
  • Pentax KAF2 Mount
  • 793g - 142 x 101 x 70mm
  • Announced December 2006
  • Later Model is Pentax K20D
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Pentax 645D vs Pentax K10D Overview

In this write-up, we are evaluating the Pentax 645D vs Pentax K10D, former is a Pro DSLR while the other is a Advanced DSLR and they are both sold by Pentax. There is a sizable difference between the sensor resolutions of the 645D (40MP) and K10D (10MP) and the 645D (Medium format) and K10D (APS-C) come with totally different sensor sizing.

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The 645D was released 3 years after the K10D which is quite a significant difference as far as tech is concerned. Both the cameras offer different body type with the Pentax 645D being a Large SLR camera and the Pentax K10D being a Mid-size SLR camera.

Before delving straight into a in depth comparison, below is a concise view of how the 645D matches up against the K10D with regard to portability, imaging, features and an overall score.

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Reasons to pick Pentax 645D over the Pentax K10D

 645D K10D 
AnnouncedMarch 2010December 2006More modern by 40 months
Display sizing3"2.5"Larger display (+0.5")
Display resolution921k210kCrisper display (+711k dot)

Reasons to pick Pentax K10D over the Pentax 645D

 K10D 645D 

Common features in the Pentax 645D and Pentax K10D

 645D K10D 
Manual focus Dial precise focusing
Display typeFixed Fixed Fixed display
Selfie screen Neither comes with selfie screen
Touch friendly display Lack of Touch friendly display

Pentax 645D vs Pentax K10D Physical Comparison

For anybody who is intending to carry around your camera often, you are going to need to factor its weight and measurements. The Pentax 645D comes with outside measurements of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") along with a weight of 1480 grams (3.26 lbs) while the Pentax K10D has proportions of 142mm x 101mm x 70mm (5.6" x 4.0" x 2.8") having a weight of 793 grams (1.75 lbs).

Check out the Pentax 645D vs Pentax K10D in our brand new Camera & Lens Size Comparison Tool. Camera Size Comparison with Lenses

Keep in mind, the weight of an ILC will vary depending on the lens you select at that moment. The following is the front view dimension comparison of the 645D and the K10D.

Pentax 645D vs Pentax K10D size comparison

Looking at size and weight, the portability score of the 645D and K10D is 50 and 59 respectively.

Pentax 645D vs Pentax K10D top view buttons comparison

Pentax 645D vs Pentax K10D Sensor Comparison

Oftentimes, its difficult to envision the difference between sensor sizes just by going over a spec sheet. The picture underneath may give you a better sense of the sensor sizing in the 645D and K10D.

Clearly, both of those cameras enjoy different megapixels and different sensor sizes. The 645D because of its larger sensor will make shooting bokeh less difficult and the Pentax 645D will offer you more detail as a result of its extra 30MP. Greater resolution will help you crop photos far more aggressively. The more modern 645D is going to have a benefit when it comes to sensor tech.

Pentax 645D vs Pentax K10D sensor size comparison

Pentax 645D vs Pentax K10D Screen and ViewFinder

Pentax 645D vs Pentax K10D Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Pentax 645D Portrait photography highlights
Pentax K10D Portrait photography highlights
77
focusing manually
great sensor resolution (40 megapixels)
large sensor size (Medium format)
saves RAW files
no liveview
52
you can focus manually
good sensor size (APS-C)
supports RAW files
doesn't have liveview
low MP (10MP)
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Street Comparison

Pentax 645D Street photography features
Pentax K10D Street photography features
58
large sensor size (Medium format)
saves RAW files
weather proofing
no articulating screen
lack of image stabilization
64
image stabilization (Sensor based)
good sensor size (APS-C)
supports RAW files
environment proofing
no articulating screen
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Sports Comparison

Pentax 645D Sports photography factors
Pentax K10D Sports photography factors
63
great sensor resolution (40 megapixels)
large sensor size (Medium format)
weather proofing
comes with phase detect autofocus
no liveview
slow continuous shooting (1.0 frames per second)
lack of image stabilization
low battery (800 per charge)
52
image stabilization (Sensor based)
good sensor size (APS-C)
environment proofing
sensor has phase detect autofocus
doesn't have liveview
low frames per second (3.0 frames per second)
low MP (10 megapixels)
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Travel Comparison

Pentax 645D Travel photography info
Pentax K10D Travel photography info
55
weather proofing
great sensor resolution (40MP)
low battery (800 per charge)
doesn't feature selfie friendly screen
49
environment proofing
flash built-in
missing Timelapse mode
low MP (10MP)
display isn't selfie friendly
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Landscape Comparison

Pentax 645D Landscape photography advice
Pentax K10D Landscape photography advice
72
focusing manually
swap lenses (Pentax 645AF2 mount)
screen is a decent size (3")
great sensor resolution (40 megapixels)
large sensor size (Medium format)
does not have low pass filter
saves RAW files
weather proofing
has dual storage slots
no liveview
lack of image stabilization
low battery (800 CIPA)
55
you can focus manually
switch lenses (Pentax KAF2 mount)
image stabilization (Sensor based)
good sensor size (APS-C)
supports RAW files
environment proofing
small screen (2.5")
doesn't have liveview
low MP (10MP)
missing Timelapse mode
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Vlogging Comparison

Pentax 645D Vlogging info
Pentax K10D Vlogging info
9
no video recording
9
lack of video recording
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Pentax 645D vs Pentax K10D Specifications

Detailed spec comparison table for Pentax 645D and Pentax K10D
 Pentax 645DPentax K10D
General Information
Manufacturer Pentax Pentax
Model Pentax 645D Pentax K10D
Type Pro DSLR Advanced DSLR
Released 2010-03-10 2006-12-15
Body design Large SLR Mid-size SLR
Sensor Information
Chip Prime II -
Sensor type CCD CCD
Sensor size Medium format APS-C
Sensor measurements 44 x 33mm 23.5 x 15.7mm
Sensor surface area 1,452.0mm² 369.0mm²
Sensor resolution 40 megapixel 10 megapixel
Anti aliasing filter
Aspect ratio 4:3 3:2
Max resolution 7264 x 5440 3872 x 2592
Max native ISO 1600 1600
Lowest native ISO 200 100
RAW pictures
Lowest enhanced ISO 100 -
Autofocusing
Focus manually
Touch to focus
Continuous autofocus
Single autofocus
Autofocus tracking
Selective autofocus
Autofocus center weighted
Autofocus multi area
Autofocus live view
Face detect focus
Contract detect focus
Phase detect focus
Number of focus points 11 11
Lens
Lens mount Pentax 645AF2 Pentax KAF2
Amount of lenses 6 151
Focal length multiplier 0.8 1.5
Screen
Range of display Fixed Type Fixed Type
Display sizing 3 inch 2.5 inch
Resolution of display 921 thousand dot 210 thousand dot
Selfie friendly
Liveview
Touch capability
Display tech TFT Color LCD with wide-viewing angle and with AR coating -
Viewfinder Information
Viewfinder type Optical (pentaprism) Optical (pentaprism)
Viewfinder coverage 98% 95%
Viewfinder magnification 0.85x 0.64x
Features
Min shutter speed 30s 30s
Max shutter speed 1/4000s 1/4000s
Continuous shutter speed 1.0 frames/s 3.0 frames/s
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Change white balance
Image stabilization
Inbuilt flash
Flash range no built-in flash -
Flash settings Auto, On, Off, Red-eye, Slow Sync, Rear Curtain Auto, On, Off, Red-eye, Auto Red Eye
External flash
AEB
WB bracketing
Max flash sync 1/125s 1/180s
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Max video resolution None None
Microphone jack
Headphone jack
Connectivity
Wireless None None
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environmental seal
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 1480 grams (3.26 pounds) 793 grams (1.75 pounds)
Dimensions 156 x 117 x 119mm (6.1" x 4.6" x 4.7") 142 x 101 x 70mm (5.6" x 4.0" x 2.8")
DXO scores
DXO Overall score 82 66
DXO Color Depth score 24.6 22.7
DXO Dynamic range score 12.6 11.6
DXO Low light score 1262 522
Other
Battery life 800 photographs -
Form of battery Battery Pack -
Battery model D-LI90 -
Self timer Yes (2 or 10 sec) Yes (2 or 12 sec)
Time lapse feature
Storage media SD/SDHC SD/MMC/SDHC card
Storage slots 2 Single
Retail pricing $4,000 $700