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Panasonic GH5S vs Pentax 645Z

Portability
62
Imaging
50
Features
82
Overall
62
Panasonic Lumix DC-GH5S front
 
Pentax 645Z front
Portability
49
Imaging
80
Features
74
Overall
77

Panasonic GH5S vs Pentax 645Z Key Specs

Panasonic GH5S
(Full Review)
  • 10MP - Four Thirds Sensor
  • 3.2" Fully Articulated Screen
  • ISO 160 - 51200 (Boost to 204800)
  • No Anti-Alias Filter
  • 1/8000s Maximum Shutter
  • 4096 x 2160 video
  • Micro Four Thirds Mount
  • 660g - 139 x 98 x 87mm
  • Introduced January 2018
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
  • Introduced April 2014
  • Replaced the Pentax 645D
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Panasonic GH5S vs Pentax 645Z Overview

Below, we will be reviewing the Panasonic GH5S vs Pentax 645Z, former is a Pro Mirrorless while the latter is a Pro DSLR by companies Panasonic and Pentax. There is a sizable difference between the resolutions of the GH5S (10MP) and 645Z (51MP) and the GH5S (Four Thirds) and 645Z (Medium format) use different sensor size.

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The GH5S was revealed 3 years after the 645Z which is quite a significant difference as far as tech is concerned. Both of these cameras come with different body type with the Panasonic GH5S being a SLR-style mirrorless camera and the Pentax 645Z being a Large SLR camera.

Before delving in to a step-by-step comparison, below is a short overview of how the GH5S grades versus the 645Z when considering portability, imaging, features and an overall score.

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Reasons to pick Panasonic GH5S over the Pentax 645Z

 GH5S 645Z 
IntroducedJanuary 2018April 2014More modern by 46 months
Screen typeFully ArticulatedTiltingFully Articulating screen
Screen resolution1620k1037kCrisper screen (+583k dot)
Selfie screen Easy selfies
Touch screen Quickly navigate

Reasons to pick Pentax 645Z over the Panasonic GH5S

 645Z GH5S 

Common features in the Panasonic GH5S and Pentax 645Z

 GH5S 645Z 
Manually focus More exact focus
Screen dimension3.2"3.2"Identical screen size

Panasonic GH5S vs Pentax 645Z Physical Comparison

For those who are aiming to carry around your camera regularly, you should think about its weight and dimensions. The Panasonic GH5S offers external measurements of 139mm x 98mm x 87mm (5.5" x 3.9" x 3.4") having a weight of 660 grams (1.46 lbs) while the Pentax 645Z has dimensions of 156mm x 117mm x 123mm (6.1" x 4.6" x 4.8") accompanied by a weight of 1550 grams (3.42 lbs).

Compare the Panasonic GH5S vs Pentax 645Z in our completely new Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Bear in mind, the weight of an ILC will vary depending on the lens you have attached at the time. The following is the front view dimension comparison of the GH5S versus the 645Z.

Panasonic GH5S vs Pentax 645Z size comparison

Factoring in size and weight, the portability grade of the GH5S and 645Z is 62 and 49 respectively.

Panasonic GH5S vs Pentax 645Z top view buttons comparison

Panasonic GH5S vs Pentax 645Z Sensor Comparison

Usually, it is very difficult to picture the contrast between sensor sizes simply by looking at specifications. The image below might give you a more clear sense of the sensor sizing in the GH5S and 645Z.

To sum up, the two cameras have got different megapixels and different sensor sizes. The GH5S using its tinier sensor is going to make achieving shallow depth of field trickier and the Pentax 645Z will resolve greater detail because of its extra 41MP. Higher resolution can also make it easier to crop photographs much more aggressively. The newer GH5S should have an edge in sensor technology.

Panasonic GH5S vs Pentax 645Z sensor size comparison

Panasonic GH5S vs Pentax 645Z Screen and ViewFinder

Panasonic GH5S vs Pentax 645Z Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Portrait photography with Panasonic GH5S
Portrait photography with Pentax 645Z
62
focusing manually
good sensor size (Four Thirds)
includes face detection focusing
delivers RAW files
sensor resolution low (10 megapixels)
88
manual focus
excellent megapixels (51MP)
big sensor size (Medium format)
has face detection autofocus
delivers RAW formats
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Street Comparison

Panasonic GH5S Street photography details
Pentax 645Z Street photography details
68
fully articulated screen
good sensor size (Four Thirds)
delivers RAW files
supports touch focus
environment proofing
above average ISO range (51,200)
does not have image stabilization
63
has a tilting screen
big sensor size (Medium format)
delivers RAW formats
weather sealing
above average ISO range (204,800)
no image stabilization
more heavy than others (1,550g)
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Sports Comparison

Sports photography with Panasonic GH5S
Sports photography with Pentax 645Z
56
high shutter speed (1/8,000s)
silent shutter (1/16,000s)
good sensor size (Four Thirds)
includes tracking autofocus
environment proofing
does not have image stabilization
sensor resolution low (10 megapixels)
does not have phase detect AF
71
excellent megapixels (51MP)
big sensor size (Medium format)
has tracking autofocus
weather sealing
has phase detect autofocus
max fps low (3.0 frames per second)
no image stabilization
low battery life (650 shots)
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Travel Comparison

Travel photography with Panasonic GH5S
Travel photography with Pentax 645Z
61
environment proofing
supports bluetooth
supports touch focus
display is selfie friendly
does not have Time Lapse recording
sensor resolution low (10 megapixels)
51
weather sealing
excellent megapixels (51 megapixels)
low battery life (650 CIPA)
more heavy than others (1,550 grams)
screen is not selfie friendly
Photography Glossary

Landscape Comparison

Panasonic GH5S Landscape photography features
Pentax 645Z Landscape photography features
63
focusing manually
swap lenses (Micro Four Thirds mount)
decent sized screen (3.2")
good sensor size (Four Thirds)
does not have anti-alias filter
above average ISO range (51,200)
delivers RAW files
environment proofing
two card slots
does not have image stabilization
sensor resolution low (10 megapixels)
does not have Time Lapse recording
78
manual focus
change lenses (Pentax 645AF2 mount)
nice screen size (3.2")
excellent megapixels (51 megapixels)
big sensor size (Medium format)
does not have anti aliasing filter
above average ISO range (204,800)
delivers RAW formats
weather sealing
two card slots
no image stabilization
low battery life (650 per charge)
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Vlogging Comparison

Panasonic GH5S Vlogging information
Pentax 645Z Vlogging information
68
display is selfie friendly
screen is touchscreen
includes face detection focusing
high res video (4096 x 2160 pixels)
comes with external mic socket
does not have image stabilization
27
has face detection autofocus
video resolution high (1920 x 1080 resolution)
has external microphone socket
screen is not selfie friendly
no image stabilization
more heavy than others (1,550 grams)
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Panasonic GH5S vs Pentax 645Z Specifications

Detailed spec comparison table for Panasonic GH5S and Pentax 645Z
 Panasonic Lumix DC-GH5SPentax 645Z
General Information
Company Panasonic Pentax
Model type Panasonic Lumix DC-GH5S Pentax 645Z
Category Pro Mirrorless Pro DSLR
Introduced 2018-01-08 2014-04-15
Physical type SLR-style mirrorless Large SLR
Sensor Information
Chip Venus Engine 10 PRIME III
Sensor type CMOS CMOS
Sensor size Four Thirds Medium format
Sensor measurements 17.3 x 13mm 44 x 33mm
Sensor area 224.9mm² 1,452.0mm²
Sensor resolution 10 megapixels 51 megapixels
Anti alias filter
Aspect ratio 1:1, 4:3, 3:2 and 16:9 4:3
Highest Possible resolution 3680 x 2760 8256 x 6192
Maximum native ISO 51200 204800
Maximum enhanced ISO 204800 -
Lowest native ISO 160 100
RAW format
Lowest enhanced ISO 80 -
Autofocusing
Focus manually
Touch focus
AF continuous
AF single
Tracking AF
Selective AF
AF center weighted
Multi area AF
AF live view
Face detection focusing
Contract detection focusing
Phase detection focusing
Total focus points 225 27
Lens
Lens support Micro Four Thirds Pentax 645AF2
Amount of lenses 107 6
Crop factor 2.1 0.8
Screen
Type of screen Fully Articulated Tilting
Screen diagonal 3.2" 3.2"
Screen resolution 1,620k dots 1,037k dots
Selfie friendly
Liveview
Touch friendly
Viewfinder Information
Viewfinder Electronic Optical (pentaprism)
Viewfinder resolution 3,680k dots -
Viewfinder coverage 100 percent 98 percent
Viewfinder magnification 0.76x 0.85x
Features
Minimum shutter speed 60 seconds 30 seconds
Fastest shutter speed 1/8000 seconds 1/4000 seconds
Fastest silent shutter speed 1/16000 seconds -
Continuous shutter rate 12.0 frames/s 3.0 frames/s
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Set WB
Image stabilization
Built-in flash
Flash distance no built-in flash no built-in flash
Flash settings Auto, Auto/Red-eye Reduction, Forced On, Forced On/Red-eye Reduction, Slow Sync., Slow Sync./Red-eye Reduction, Forced Off 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
Hot shoe
Auto exposure bracketing
WB bracketing
Fastest flash synchronize - 1/125 seconds
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Video resolutions 4096 x 2160 @ 60p / 150 Mbps, MOV, H.264, Linear PCM 1920 x 1080 (60i, 50i, 30p, 25p, 24p), 1280 x 720 (60p, 50p, 30p, 25p,24p)
Maximum video resolution 4096x2160 1920x1080
Video file format MPEG-4, H.264, H.265 MPEG-4, H.264
Microphone port
Headphone port
Connectivity
Wireless Built-In None
Bluetooth
NFC
HDMI
USB USB 3.1 USB 3.0 (5 GBit/sec)
GPS None Optional
Physical
Environment sealing
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 660g (1.46 lb) 1550g (3.42 lb)
Dimensions 139 x 98 x 87mm (5.5" x 3.9" x 3.4") 156 x 117 x 123mm (6.1" x 4.6" x 4.8")
DXO scores
DXO Overall rating not tested 101
DXO Color Depth rating not tested 26.0
DXO Dynamic range rating not tested 14.7
DXO Low light rating not tested 4505
Other
Battery life 440 photos 650 photos
Battery type Battery Pack Battery Pack
Battery ID DMW-BLF19 D-LI90
Self timer Yes (2 or 10 secs, 10 secs w/3 images) Yes (2 or 10 secs)
Time lapse recording
Type of storage Dual SD/SDHC/SDXC cards (UHS-II V60 cards supported) Dual SD/SDHC/SDXC slots
Card slots 2 2
Price at release $2,498 $5,024