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Pentax 645Z vs Pentax K-7

Portability
49
Imaging
81
Features
74
Overall
78
Pentax 645Z front
 
Pentax K-7 front
Portability
60
Imaging
55
Features
69
Overall
60

Pentax 645Z vs Pentax K-7 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
  • Launched April 2014
  • Old Model is Pentax 645D
Pentax K-7
(Full Review)
  • 15MP - APS-C Sensor
  • 3" Fixed Screen
  • ISO 100 - 2000 (Raise to 6400)
  • Sensor based Image Stabilization
  • 1/8000s Maximum Shutter
  • 1280 x 720 video
  • Pentax KAF2 Mount
  • 750g - 131 x 97 x 73mm
  • Launched October 2009
  • Refreshed by Pentax K-5
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Pentax 645Z vs Pentax K-7 Overview

On this page, we will be evaluating the Pentax 645Z versus Pentax K-7, former is a Pro DSLR while the latter is a Advanced DSLR and both are designed by Pentax. There is a noticeable difference among the sensor resolutions of the 645Z (51MP) and K-7 (15MP) and the 645Z (Medium format) and K-7 (APS-C) have totally different sensor measurements.

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The 645Z was unveiled 4 years after the K-7 which is a fairly sizable difference as far as camera tech is concerned. Both of these cameras have different body design with the Pentax 645Z being a Large SLR camera and the Pentax K-7 being a Mid-size SLR camera.

Before delving right into a in depth comparison, here is a quick overview of how the 645Z grades against the K-7 for portability, imaging, features and an overall score.

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Reasons to pick Pentax 645Z over the Pentax K-7

 645Z K-7 
LaunchedApril 2014October 2009More modern by 56 months
Screen typeTiltingFixed Tilting screen
Screen dimensions3.2"3"Bigger screen (+0.2")
Screen resolution1037k921kSharper screen (+116k dot)

Reasons to pick Pentax K-7 over the Pentax 645Z

 K-7 645Z 

Common features in the Pentax 645Z and Pentax K-7

 645Z K-7 
Manually focus More accurate focus
Selfie screen Neither features selfie screen
Touch screen No Touch screen

Pentax 645Z vs Pentax K-7 Physical Comparison

If you are aiming to carry around your camera, you have to think about its weight and dimensions. The Pentax 645Z enjoys external measurements of 156mm x 117mm x 123mm (6.1" x 4.6" x 4.8") with a weight of 1550 grams (3.42 lbs) and the Pentax K-7 has dimensions of 131mm x 97mm x 73mm (5.2" x 3.8" x 2.9") accompanied by a weight of 750 grams (1.65 lbs).

Take a look at the Pentax 645Z versus Pentax K-7 in our completely new Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Bear in mind, the weight of an ILC will change dependant on the lens you have chosen at the time. The following is a front view over all size comparison of the 645Z and the K-7.

Pentax 645Z vs Pentax K-7 size comparison

Taking into consideration size and weight, the portability grade of the 645Z and K-7 is 49 and 60 respectively.

Pentax 645Z vs Pentax K-7 top view buttons comparison

Pentax 645Z vs Pentax K-7 Sensor Comparison

Often, it can be difficult to envision the gap in sensor sizes simply by seeing technical specs. The pic underneath might give you a better sense of the sensor sizing in the 645Z and K-7.

As you have seen, both of those cameras have different resolutions and different sensor sizes. The 645Z using its bigger sensor will make getting shallower depth of field less difficult and the Pentax 645Z will provide more detail having an extra 36 Megapixels. Higher resolution will also help you crop shots a bit more aggressively. The younger 645Z will have an edge with regard to sensor tech.

Pentax 645Z vs Pentax K-7 sensor size comparison

Pentax 645Z vs Pentax K-7 Screen and ViewFinder

Pentax 645Z vs Pentax K-7 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Pentax 645Z Portrait photography features
Pentax K-7 Portrait photography features
88
focusing manually
megapixel count great (51MP)
sensor size is great (Medium format)
supports face detection autofocus
exports RAW formats
73
manual focus
sensor resolution is decent (15MP)
sensor size is good (APS-C)
provides face detection autofocus
delivers RAW files
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Street Comparison

Pentax 645Z Street photography highlights
Pentax K-7 Street photography highlights
63
has a tilting screen
sensor size is great (Medium format)
exports RAW formats
environment proof
very good high ISO (204,800)
lack of image stabilization
more heavy than others in class (1,550g)
66
image stabilization (Sensor based)
sensor size is good (APS-C)
delivers RAW files
weather proofing
no moving screen
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Sports Comparison

Pentax 645Z as a Sports photography camera
Pentax K-7 as a Sports photography camera
71
megapixel count great (51MP)
sensor size is great (Medium format)
supports tracking autofocus
environment proof
has phase detect autofocus
max fps low (3.0 frames per second)
lack of image stabilization
bad battery power (650 shots)
70
max shutter speed is good (1/8,000 seconds)
image stabilization (Sensor based)
sensor resolution is decent (15 megapixels)
sensor size is good (APS-C)
weather proofing
supports phase detect autofocus
slow frames per second (5.0 fps)
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Travel Comparison

Pentax 645Z as a Travel photography camera
Pentax K-7 as a Travel photography camera
51
environment proof
megapixel count great (51MP)
bad battery power (650 shots)
more heavy than others in class (1,550 grams)
display is not selfie friendly
65
weather proofing
sensor resolution is decent (15MP)
flash built-in
does not posses selfie friendly screen
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Landscape Comparison

Pentax 645Z Landscape photography features
Pentax K-7 Landscape photography features
78
focusing manually
interchangeable lenses (Pentax 645AF2 mount)
screen size is good (3.2")
megapixel count great (51MP)
sensor size is great (Medium format)
no low pass filter
very good high ISO (204,800)
exports RAW formats
environment proof
has double storage slots
lack of image stabilization
bad battery power (650 shots)
78
manual focus
swap lenses (Pentax KAF2 mount)
pretty good screen size (3 inches)
image stabilization (Sensor based)
sensor resolution is decent (15MP)
sensor size is good (APS-C)
delivers RAW files
weather proofing
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Vlogging Comparison

Pentax 645Z as a Vlogging camera
Pentax K-7 as a Vlogging camera
27
supports face detection autofocus
video resolution high (1920 x 1080 pxls)
has external microphone port
display is not selfie friendly
lack of image stabilization
more heavy than others in class (1,550 grams)
25
image stabilization (Sensor based)
provides face detection autofocus
does not posses selfie friendly screen
low res video (1280 x 720 resolution)
doesn't have external mic support
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Pentax 645Z vs Pentax K-7 Specifications

Detailed spec comparison table for Pentax 645Z and Pentax K-7
 Pentax 645ZPentax K-7
General Information
Brand Pentax Pentax
Model Pentax 645Z Pentax K-7
Class Pro DSLR Advanced DSLR
Launched 2014-04-15 2009-10-02
Physical type Large SLR Mid-size SLR
Sensor Information
Chip PRIME III Prime II
Sensor type CMOS CMOS
Sensor size Medium format APS-C
Sensor dimensions 44 x 33mm 23.4 x 15.6mm
Sensor area 1,452.0mm² 365.0mm²
Sensor resolution 51 megapixels 15 megapixels
Anti aliasing filter
Aspect ratio 4:3 3:2
Highest Possible resolution 8256 x 6192 4672 x 3104
Maximum native ISO 204800 2000
Maximum enhanced ISO - 6400
Lowest native ISO 100 100
RAW images
Autofocusing
Manual focus
Touch to focus
AF continuous
AF single
Tracking AF
Selective AF
AF center weighted
Multi area AF
AF live view
Face detection AF
Contract detection AF
Phase detection AF
Number of focus points 27 11
Lens
Lens mounting 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 dots 921k dots
Selfie friendly
Liveview
Touch functionality
Screen technology - TFT color LCD with AR coating
Viewfinder Information
Viewfinder type Optical (pentaprism) Optical (pentaprism)
Viewfinder coverage 98 percent 100 percent
Viewfinder magnification 0.85x 0.61x
Features
Minimum shutter speed 30 secs 30 secs
Fastest shutter speed 1/4000 secs 1/8000 secs
Continuous shutter rate 3.0fps 5.0fps
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Custom WB
Image stabilization
Integrated flash
Flash range no built-in flash 13.00 m
Flash options 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, Rear Curtain, Wireless
External flash
AE bracketing
WB bracketing
Fastest flash synchronize 1/125 secs 1/180 secs
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Supported video resolutions 1920 x 1080 (60i, 50i, 30p, 25p, 24p), 1280 x 720 (60p, 50p, 30p, 25p,24p) 1280 x 720 (30 fps), 1536 x 1024 (30 fps), 640 x 480 (30 fps), 320 x 240 (30 fps)
Maximum video resolution 1920x1080 1280x720
Video file format MPEG-4, H.264 Motion JPEG
Mic support
Headphone support
Connectivity
Wireless None None
Bluetooth
NFC
HDMI
USB USB 3.0 (5 GBit/sec) USB 2.0 (480 Mbit/sec)
GPS Optional None
Physical
Environment sealing
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 1550 grams (3.42 lbs) 750 grams (1.65 lbs)
Physical 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 Overall score 101 61
DXO Color Depth score 26.0 22.6
DXO Dynamic range score 14.7 10.6
DXO Low light score 4505 536
Other
Battery life 650 images 980 images
Form of battery Battery Pack Battery Pack
Battery model D-LI90 D-LI90
Self timer Yes (2 or 10 secs) Yes (2 or 10 sec)
Time lapse recording
Storage type Dual SD/SDHC/SDXC slots SD/SDHC/MMC
Card slots Two One
Pricing at release $5,024 $599