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Pentax 645D vs Pentax K-5 II

Portability
50
Imaging
76
Features
52
Overall
66
Pentax 645D front
 
Pentax K-5 II front
Portability
60
Imaging
58
Features
82
Overall
67

Pentax 645D vs Pentax K-5 II 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
  • Successor is Pentax 645Z
Pentax K-5 II
(Full Review)
  • 16MP - APS-C Sensor
  • 3" Fixed Display
  • ISO 100 - 12800 (Bump to 51200)
  • Sensor based Image Stabilization
  • 1/8000s Maximum Shutter
  • 1920 x 1080 video
  • Pentax KAF2 Mount
  • 760g - 131 x 97 x 73mm
  • Released June 2013
  • Succeeded the Pentax K-5
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Pentax 645D vs Pentax K-5 II Overview

Lets examine more closely at the Pentax 645D versus Pentax K-5 II, former is a Pro DSLR while the other is a Advanced DSLR and both of them are sold by Pentax. There exists a sizable gap between the sensor resolutions of the 645D (40MP) and K-5 II (16MP) and the 645D (Medium format) and K-5 II (APS-C) feature totally different sensor dimensions.

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The 645D was brought out 4 years prior to the K-5 II which is quite a significant difference as far as technology is concerned. Each of the cameras offer different body type with the Pentax 645D being a Large SLR camera and the Pentax K-5 II being a Mid-size SLR camera.

Before diving in to a in-depth comparison, below is a concise view of how the 645D scores against the K-5 II for portability, imaging, features and an overall score.

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Reasons to pick Pentax 645D over the Pentax K-5 II

 645D K-5 II 

Reasons to pick Pentax K-5 II over the Pentax 645D

 K-5 II 645D 
ReleasedJune 2013March 2010More modern by 39 months

Common features in the Pentax 645D and Pentax K-5 II

 645D K-5 II 
Manually focus More exact focusing
Display typeFixed Fixed Fixed display
Display sizing3"3"Equivalent display sizing
Display resolution921k921kEqual display resolution
Selfie screen Lack of selfie screen
Touch friendly display Lack of Touch friendly display

Pentax 645D vs Pentax K-5 II Physical Comparison

If you're planning to carry around your camera, you should consider its weight and size. The Pentax 645D enjoys 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) and the Pentax K-5 II has specifications of 131mm x 97mm x 73mm (5.2" x 3.8" x 2.9") having a weight of 760 grams (1.68 lbs).

Take a look at the Pentax 645D versus Pentax K-5 II in our brand new Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Keep in mind, the weight of an ILC will change depending on the lens you are using at the time. Underneath is the front view sizing comparison of the 645D against the K-5 II.

Pentax 645D vs Pentax K-5 II size comparison

Looking at dimensions and weight, the portability grade of the 645D and K-5 II is 50 and 60 respectively.

Pentax 645D vs Pentax K-5 II top view buttons comparison

Pentax 645D vs Pentax K-5 II Sensor Comparison

Normally, it is hard to envision the contrast between sensor sizes only by looking at specs. The pic below should give you a stronger sense of the sensor measurements in the 645D and K-5 II.

All in all, both of those cameras enjoy different resolutions and different sensor sizes. The 645D featuring a larger sensor will make achieving shallower depth of field less difficult and the Pentax 645D will give more detail having its extra 24 Megapixels. Greater resolution will also make it easier to crop photos far more aggressively. The more aged 645D is going to be behind when it comes to sensor technology.

Pentax 645D vs Pentax K-5 II sensor size comparison

Pentax 645D vs Pentax K-5 II Screen and ViewFinder

Pentax 645D vs Pentax K-5 II Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Pentax 645D Portrait photography highlights
Pentax K-5 II Portrait photography highlights
77
manual focus
MP count amazing (40 megapixels)
sensor size is big (Medium format)
exports RAW formats
doesn't have liveview
74
manual focus
good MP (16MP)
sensor size is decent (APS-C)
comes with face detect focusing
saves RAW formats
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Street Comparison

Pentax 645D Street photography highlights
Pentax K-5 II Street photography highlights
58
sensor size is big (Medium format)
exports RAW formats
environment proof
screen is fixed
no image stabilization
67
built in image stabilization (Sensor based)
sensor size is decent (APS-C)
saves RAW formats
weather proof
fixed screen
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Sports Comparison

Pentax 645D Sports photography factors
Pentax K-5 II Sports photography factors
63
MP count amazing (40 megapixels)
sensor size is big (Medium format)
environment proof
comes with phase detect auto focus
doesn't have liveview
painfully slow continuous shooting (1.0 frames/s)
no image stabilization
terrible battery power (800 shots)
79
max shutter speed is good (1/8,000s)
built in image stabilization (Sensor based)
good MP (16 megapixels)
sensor size is decent (APS-C)
comes with tracking focus
weather proof
supports phase detect AF
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Travel Comparison

Travel photography with Pentax 645D
Travel photography with Pentax K-5 II
55
environment proof
MP count amazing (40 megapixels)
terrible battery power (800 CIPA)
doesn't contain selfie friendly display
65
weather proof
good MP (16 megapixels)
flash built-in
doesn't posses selfie friendly display
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Landscape Comparison

Pentax 645D Landscape photography features
Pentax K-5 II Landscape photography features
72
manual focus
interchangeable lenses (Pentax 645AF2 mount)
nice screen size (3 inches)
MP count amazing (40 megapixels)
sensor size is big (Medium format)
does not have anti-alias filter
exports RAW formats
environment proof
has dual storage slots
doesn't have liveview
no image stabilization
terrible battery power (800 per charge)
79
manual focus
interchangeable lenses (Pentax KAF2 mount)
nice screen size (3 inches)
built in image stabilization (Sensor based)
good MP (16 megapixels)
sensor size is decent (APS-C)
saves RAW formats
weather proof
Photography Glossary

Vlogging Comparison

Vlogging with Pentax 645D
Vlogging with Pentax K-5 II
9
can't shoot video
33
built in image stabilization (Sensor based)
comes with face detect focusing
video res high (1920 x 1080 pixels)
comes with mic socket
doesn't posses selfie friendly display
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Pentax 645D vs Pentax K-5 II Specifications

Detailed spec comparison table for Pentax 645D and Pentax K-5 II
 Pentax 645DPentax K-5 II
General Information
Make Pentax Pentax
Model type Pentax 645D Pentax K-5 II
Class Pro DSLR Advanced DSLR
Released 2010-03-10 2013-06-04
Physical type Large SLR Mid-size SLR
Sensor Information
Processor Prime II Prime II
Sensor type CCD CMOS
Sensor size Medium format APS-C
Sensor dimensions 44 x 33mm 23.7 x 15.7mm
Sensor surface area 1,452.0mm² 372.1mm²
Sensor resolution 40 megapixel 16 megapixel
Anti alias filter
Aspect ratio 4:3 3:2
Maximum resolution 7264 x 5440 4928 x 3264
Maximum native ISO 1600 12800
Maximum boosted ISO - 51200
Min native ISO 200 100
RAW photos
Min boosted ISO 100 80
Autofocusing
Manual focusing
Touch to focus
Continuous AF
Single AF
Tracking AF
AF selectice
AF center weighted
AF multi area
Live view AF
Face detect AF
Contract detect AF
Phase detect AF
Total focus points 11 11
Cross type focus points - 9
Lens
Lens mount type Pentax 645AF2 Pentax KAF2
Available lenses 6 151
Crop factor 0.8 1.5
Screen
Type of display Fixed Type Fixed Type
Display sizing 3 inch 3 inch
Resolution of display 921k dots 921k dots
Selfie friendly
Liveview
Touch screen
Display technology TFT Color LCD with wide-viewing angle and with AR coating TFT LCD monitor
Viewfinder Information
Viewfinder type Optical (pentaprism) Optical (pentaprism)
Viewfinder coverage 98 percent 100 percent
Viewfinder magnification 0.85x 0.61x
Features
Slowest shutter speed 30 secs 30 secs
Maximum shutter speed 1/4000 secs 1/8000 secs
Continuous shooting rate 1.0fps 7.0fps
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Set WB
Image stabilization
Integrated flash
Flash distance no built-in flash 13.00 m (at ISO 100)
Flash options Auto, On, Off, Red-eye, Slow Sync, Rear Curtain Auto, On, Off, Red-eye, Slow sync, High speed, Rear curtain and Wireless
External flash
Auto exposure bracketing
White balance bracketing
Maximum flash synchronize 1/125 secs -
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
Supported video resolutions - 1920 x 1080 (25 fps), 1280 x 720 (25, 30 fps), 640 x 480 (25, 30 fps)
Maximum video resolution None 1920x1080
Video data format - Motion JPEG
Mic port
Headphone port
Connectivity
Wireless None None
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None Optional
Physical
Environment sealing
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 1480g (3.26 lbs) 760g (1.68 lbs)
Dimensions 156 x 117 x 119mm (6.1" x 4.6" x 4.7") 131 x 97 x 73mm (5.2" x 3.8" x 2.9")
DXO scores
DXO All around rating 82 82
DXO Color Depth rating 24.6 23.8
DXO Dynamic range rating 12.6 14.1
DXO Low light rating 1262 1235
Other
Battery life 800 pictures 980 pictures
Battery type Battery Pack Battery Pack
Battery ID D-LI90 D-LI90
Self timer Yes (2 or 10 sec) Yes ( 2 or 12 seconds)
Time lapse recording
Storage type SD/SDHC SD/SDHC/SDXC
Card slots Two One
Price at launch $4,000 $830