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Pentax 645Z vs Pentax K-5 IIs

Portability
49
Imaging
80
Features
74
Overall
77
Pentax 645Z front
 
Pentax K-5 IIs front
Portability
60
Imaging
58
Features
83
Overall
68

Pentax 645Z vs Pentax K-5 IIs Key Specs

Pentax 645Z
(Full Review)
  • 51MP - Medium format Sensor
  • 3.2" Tilting Screen
  • ISO 100 - 204800
  • No Anti-Alias Filter
  • 1920 x 1080 video
  • Pentax 645AF2 Mount
  • 1550g - 156 x 117 x 123mm
  • Released April 2014
  • Earlier Model is Pentax 645D
Pentax K-5 IIs
(Full Review)
  • 16MP - APS-C Sensor
  • 3" Fixed Display
  • ISO 100 - 12800 (Increase to 51200)
  • Sensor based Image Stabilization
  • No Anti-Alias Filter
  • 1/8000s Max Shutter
  • 1920 x 1080 video
  • Pentax KAF2 Mount
  • 760g - 131 x 97 x 73mm
  • Revealed June 2013
  • Earlier Model is Pentax K-5
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Pentax 645Z vs Pentax K-5 IIs Overview

In this article, we are analyzing the Pentax 645Z versus Pentax K-5 IIs, one being a Pro DSLR and the other is a Advanced DSLR and both are manufactured by Pentax. There is a significant difference among the image resolutions of the 645Z (51MP) and K-5 IIs (16MP) and the 645Z (Medium format) and K-5 IIs (APS-C) feature different sensor measurements.

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The 645Z was brought out 11 months later than the K-5 IIs and they are both of a similar generation. Each of the cameras offer different body type with the Pentax 645Z being a Large SLR camera and the Pentax K-5 IIs being a Mid-size SLR camera.

Before going through a thorough comparison, below is a short highlight of how the 645Z grades against the K-5 IIs for portability, imaging, features and an overall grade.

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Reasons to pick Pentax 645Z over the Pentax K-5 IIs

 645Z K-5 IIs 
RevealedApril 2014June 2013More recent by 11 months
Display typeTiltingFixed Tilting display
Display sizing3.2"3"Larger display (+0.2")
Display resolution1037k921kSharper display (+116k dot)

Reasons to pick Pentax K-5 IIs over the Pentax 645Z

 K-5 IIs 645Z 

Common features in the Pentax 645Z and Pentax K-5 IIs

 645Z K-5 IIs 
Manual focus More precise focusing
Selfie screen Neither comes with selfie screen
Touch display Neither comes with Touch display

Pentax 645Z vs Pentax K-5 IIs Physical Comparison

For those who are aiming to lug around your camera frequently, you will want to consider its weight and volume. The Pentax 645Z comes with external dimensions of 156mm x 117mm x 123mm (6.1" x 4.6" x 4.8") and a weight of 1550 grams (3.42 lbs) and the Pentax K-5 IIs has sizing of 131mm x 97mm x 73mm (5.2" x 3.8" x 2.9") along with a weight of 760 grams (1.68 lbs).

Compare the Pentax 645Z versus Pentax K-5 IIs in the new Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses

Don't forget, the weight of an Interchangeable Lens Camera will differ based on the lens you are employing at that moment. Below is the front view overall size comparison of the 645Z vs the K-5 IIs.

Pentax 645Z vs Pentax K-5 IIs size comparison

Considering size and weight, the portability rating of the 645Z and K-5 IIs is 49 and 60 respectively.

Pentax 645Z vs Pentax K-5 IIs top view buttons comparison

Pentax 645Z vs Pentax K-5 IIs Sensor Comparison

Usually, it is very hard to picture the contrast in sensor measurements purely by going through technical specs. The photograph here will provide you a better sense of the sensor dimensions in the 645Z and K-5 IIs.

As you have seen, both cameras offer different megapixels and different sensor measurements. The 645Z due to its larger sensor is going to make shooting shallow depth of field easier and the Pentax 645Z will provide greater detail having its extra 35 Megapixels. Greater resolution can also make it easier to crop photos a little more aggressively. The younger 645Z should have an advantage in sensor tech.

Pentax 645Z vs Pentax K-5 IIs sensor size comparison

Pentax 645Z vs Pentax K-5 IIs Screen and ViewFinder

Pentax 645Z vs Pentax K-5 IIs Screen and Viewfinder comparison
Photography Glossary

Photography Type Scores

Portrait Comparison

Pentax 645Z Portrait photography details
Pentax K-5 IIs Portrait photography details
88
focusing manually
megapixel count high (51MP)
big sensor size (Medium format)
has face detect focus
saves RAW files
74
has manual focus
decent megapixels (16MP)
decent sensor size (APS-C)
comes with face detection focusing
exports RAW formats
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Street Comparison

Pentax 645Z Street photography features
Pentax K-5 IIs Street photography features
63
screen tilts up and down
big sensor size (Medium format)
saves RAW files
weather proofing
very good high ISO (204,800)
no image stabilization
more heavy than competition (1,550 grams)
67
has image stabilization (Sensor based)
decent sensor size (APS-C)
exports RAW formats
weather proof
no articulating screen
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Sports Comparison

Pentax 645Z Sports photography features
Pentax K-5 IIs Sports photography features
71
megapixel count high (51MP)
big sensor size (Medium format)
has tracking focus
weather proofing
supports phase detect auto focus
very slow continuous shooting (3.0 frames/s)
no image stabilization
terrible battery (650 shots)
79
high shutter speed (1/8,000s)
has image stabilization (Sensor based)
decent megapixels (16MP)
decent sensor size (APS-C)
comes with tracking autofocus
weather proof
sensor has phase detect AF
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Travel Comparison

Pentax 645Z Travel photography details
Pentax K-5 IIs Travel photography details
51
weather proofing
megapixel count high (51MP)
terrible battery (650 CIPA)
more heavy than competition (1,550g)
doesn't have selfie friendly screen
65
weather proof
decent megapixels (16MP)
built-in flash
screen is not selfie friendly
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Landscape Comparison

Landscape photography with Pentax 645Z
Landscape photography with Pentax K-5 IIs
78
focusing manually
change lenses (Pentax 645AF2 mount)
decent sized screen (3.2 inch)
megapixel count high (51MP)
big sensor size (Medium format)
no anti-alias filter
very good high ISO (204,800)
saves RAW files
weather proofing
has double storage slots
no image stabilization
terrible battery (650 CIPA)
79
has manual focus
swap lenses (Pentax KAF2 mount)
decent sized screen (3 inch)
has image stabilization (Sensor based)
decent megapixels (16MP)
decent sensor size (APS-C)
no anti aliasing filter
exports RAW formats
weather proof
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Vlogging Comparison

Pentax 645Z Vlogging factors
Pentax K-5 IIs Vlogging factors
27
has face detect focus
video resolution high (1920 x 1080 pixels)
comes with microphone port
doesn't have selfie friendly screen
no image stabilization
more heavy than competition (1,550g)
33
has image stabilization (Sensor based)
comes with face detection focusing
high res video (1920 x 1080 pxls)
includes external microphone jack
screen is not selfie friendly
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Pentax 645Z vs Pentax K-5 IIs Specifications

Detailed spec comparison table for Pentax 645Z and Pentax K-5 IIs
 Pentax 645ZPentax K-5 IIs
General Information
Company Pentax Pentax
Model type Pentax 645Z Pentax K-5 IIs
Category Pro DSLR Advanced DSLR
Released 2014-04-15 2013-06-04
Body design Large SLR Mid-size SLR
Sensor Information
Chip PRIME III Prime II
Sensor type CMOS CMOS
Sensor size Medium format APS-C
Sensor measurements 44 x 33mm 23.7 x 15.7mm
Sensor area 1,452.0mm² 372.1mm²
Sensor resolution 51 megapixel 16 megapixel
Anti alias filter
Aspect ratio 4:3 3:2
Full resolution 8256 x 6192 4928 x 3264
Max native ISO 204800 12800
Max boosted ISO - 51200
Minimum native ISO 100 100
RAW images
Minimum boosted ISO - 80
Autofocusing
Focus manually
Touch to focus
Autofocus continuous
Autofocus single
Tracking autofocus
Selective autofocus
Autofocus center weighted
Multi area autofocus
Autofocus live view
Face detection autofocus
Contract detection autofocus
Phase detection autofocus
Total focus points 27 11
Cross type focus points - 9
Lens
Lens mount type Pentax 645AF2 Pentax KAF2
Amount of lenses 6 151
Crop factor 0.8 1.5
Screen
Screen type Tilting Fixed Type
Screen sizing 3.2" 3"
Resolution of screen 1,037k dot 921k dot
Selfie friendly
Liveview
Touch function
Screen tech - TFT LCD monitor
Viewfinder Information
Viewfinder type Optical (pentaprism) Optical (pentaprism)
Viewfinder coverage 98 percent 100 percent
Viewfinder magnification 0.85x 0.61x
Features
Lowest shutter speed 30s 30s
Highest shutter speed 1/4000s 1/8000s
Continuous shooting speed 3.0 frames/s 7.0 frames/s
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Set white balance
Image stabilization
Built-in flash
Flash distance no built-in flash 13.00 m (at ISO 100)
Flash settings Flash On, Flash On+Red-eye Reduction, Slow-speed Sync, Slow-speed Sync+Red-eye, P-TTL, Trailing Curtain Sync, contrast-control-sync, high-speed sync, wireless sync Auto, On, Off, Red-eye, Slow sync, High speed, Rear curtain and Wireless
External flash
AEB
White balance bracketing
Highest flash sync 1/125s 1/180s
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Video resolutions 1920 x 1080 (60i, 50i, 30p, 25p, 24p), 1280 x 720 (60p, 50p, 30p, 25p,24p) 1920 x 1080 (25 fps), 1280 x 720 (25, 30 fps), 640 x 480 (25, 30 fps)
Max video resolution 1920x1080 1920x1080
Video data format MPEG-4, H.264 Motion JPEG
Microphone input
Headphone input
Connectivity
Wireless None None
Bluetooth
NFC
HDMI
USB USB 3.0 (5 GBit/sec) USB 2.0 (480 Mbit/sec)
GPS Optional Optional
Physical
Environment seal
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 1550 grams (3.42 lb) 760 grams (1.68 lb)
Dimensions 156 x 117 x 123mm (6.1" x 4.6" x 4.8") 131 x 97 x 73mm (5.2" x 3.8" x 2.9")
DXO scores
DXO All around rating 101 82
DXO Color Depth rating 26.0 23.9
DXO Dynamic range rating 14.7 14.1
DXO Low light rating 4505 1208
Other
Battery life 650 photographs 980 photographs
Type of battery Battery Pack Battery Pack
Battery ID D-LI90 D-LI90
Self timer Yes (2 or 10 secs) Yes ( 2 or 12 seconds)
Time lapse shooting
Type of storage Dual SD/SDHC/SDXC slots SD/SDHC/SDXC
Storage slots Two One
Price at launch $5,024 $749