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Panasonic GX85 vs Pentax 645D

Portability
83
Imaging
54
Features
76
Overall
62
Panasonic Lumix DMC-GX85 front
 
Pentax 645D front
Portability
50
Imaging
76
Features
52
Overall
66

Panasonic GX85 vs Pentax 645D Key Specs

Panasonic GX85
(Full Review)
  • 16MP - Four Thirds Sensor
  • 3" Tilting Display
  • ISO 200 - 25600
  • Sensor based 5-axis Image Stabilization
  • No Anti-Alias Filter
  • 3840 x 2160 video
  • Micro Four Thirds Mount
  • 426g - 122 x 71 x 44mm
  • Launched April 2016
  • Other Name is Lumix DMC-GX80 / Lumix DMC-GX7 Mark II
Pentax 645D
(Full Review)
  • 40MP - Medium format Sensor
  • 3" Fixed Screen
  • ISO 200 - 1600
  • No Anti-Alias Filter
  • No Video
  • Pentax 645AF2 Mount
  • 1480g - 156 x 117 x 119mm
  • Revealed March 2010
  • Refreshed by Pentax 645Z
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Panasonic GX85 vs Pentax 645D Overview

On this page, we will be evaluating the Panasonic GX85 versus Pentax 645D, former being a Advanced Mirrorless while the latter is a Pro DSLR by brands Panasonic and Pentax. There is a sizable difference among the sensor resolutions of the GX85 (16MP) and 645D (40MP) and the GX85 (Four Thirds) and 645D (Medium format) posses different sensor measurements.

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The GX85 was unveiled 6 years later than the 645D and that is a fairly significant difference as far as camera tech is concerned. Both of these cameras have different body design with the Panasonic GX85 being a Rangefinder-style mirrorless camera and the Pentax 645D being a Large SLR camera.

Before getting straight to a step-by-step comparison, here is a simple synopsis of how the GX85 scores vs the 645D with respect to portability, imaging, features and an overall rating.

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Reasons to pick Panasonic GX85 over the Pentax 645D

 GX85 645D 
RevealedApril 2016March 2010Fresher by 74 months
Screen typeTiltingFixed Tilting screen
Screen resolution1040k921kSharper screen (+119k dot)
Touch screen Quickly navigate

Reasons to pick Pentax 645D over the Panasonic GX85

 645D GX85 

Common features in the Panasonic GX85 and Pentax 645D

 GX85 645D 
Manual focus Dial exact focus
Screen dimensions3"3"Equal screen measurements
Selfie screen Lack of selfie screen

Panasonic GX85 vs Pentax 645D Physical Comparison

For anybody who is intending to carry your camera, you'll need to think about its weight and volume. The Panasonic GX85 comes with outside dimensions of 122mm x 71mm x 44mm (4.8" x 2.8" x 1.7") along with a weight of 426 grams (0.94 lbs) while the Pentax 645D has sizing of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") having a weight of 1480 grams (3.26 lbs).

Analyze the Panasonic GX85 versus Pentax 645D in our brand new Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Remember that, the weight of an ILC will differ based on the lens you have at that time. Following is a front view size comparison of the GX85 compared to the 645D.

Panasonic GX85 vs Pentax 645D size comparison

Looking at size and weight, the portability score of the GX85 and 645D is 83 and 50 respectively.

Panasonic GX85 vs Pentax 645D top view buttons comparison

Panasonic GX85 vs Pentax 645D Sensor Comparison

Generally, it can be hard to visualize the gap in sensor sizing merely by checking out technical specs. The visual below should give you a greater sense of the sensor sizes in the GX85 and 645D.

As you can tell, each of the cameras have different megapixels and different sensor sizing. The GX85 with its smaller sensor is going to make shooting shallow depth of field trickier and the Pentax 645D will show extra detail having an extra 24MP. Higher resolution can also make it easier to crop shots a bit more aggressively. The fresher GX85 should have an advantage in sensor innovation.

Panasonic GX85 vs Pentax 645D sensor size comparison

Panasonic GX85 vs Pentax 645D Screen and ViewFinder

Panasonic GX85 vs Pentax 645D Screen and Viewfinder comparison
Photography Glossary

Photography Type Scores

Portrait Comparison

Panasonic GX85 as a Portrait photography camera
Pentax 645D as a Portrait photography camera
72
focusing manually
MP count good (16 megapixels)
decent sensor size (Four Thirds)
has face detection autofocus
saves RAW files
77
has manual focus
high resolution (40MP)
large sensor size (Medium format)
exports RAW formats
does not have liveview
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Street Comparison

Street photography with Panasonic GX85
Street photography with Pentax 645D
83
screen tilts up and down
built in image stabilization (Sensor based 5-axis)
decent sensor size (Four Thirds)
saves RAW files
supports touch to focus
good ISO range (25,600)
58
large sensor size (Medium format)
exports RAW formats
weather proof
no moving screen
lack of image stabilization
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Sports Comparison

Panasonic GX85 as a Sports photography camera
Pentax 645D as a Sports photography camera
62
quiet mode (1/16,000 seconds)
built in image stabilization (Sensor based 5-axis)
MP count good (16MP)
decent sensor size (Four Thirds)
has tracking autofocus
not so great battery (290 per charge)
does not have phase detect autofocus
63
high resolution (40MP)
large sensor size (Medium format)
weather proof
has phase detect AF
does not have liveview
slow fps (1.0 frames per second)
lack of image stabilization
terrible battery power (800 per charge)
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Travel Comparison

Panasonic GX85 Travel photography features
Pentax 645D Travel photography features
68
supports touch to focus
MP count good (16 megapixels)
built-in flash
not so great battery (290 shots)
display isn't selfie friendly
55
weather proof
high resolution (40MP)
terrible battery power (800 shots)
display is not selfie friendly
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Landscape Comparison

Panasonic GX85 Landscape photography features
Pentax 645D Landscape photography features
74
focusing manually
switch lenses (Micro Four Thirds mount)
good sized screen (3 inch)
built in image stabilization (Sensor based 5-axis)
MP count good (16 megapixels)
decent sensor size (Four Thirds)
does not have low pass filter
good ISO range (25,600)
saves RAW files
not so great battery (290 shots)
72
has manual focus
switch lenses (Pentax 645AF2 mount)
screen is a good size (3")
high resolution (40 megapixels)
large sensor size (Medium format)
does not have anti-alias filter
exports RAW formats
weather proof
2 card slots
does not have liveview
lack of image stabilization
terrible battery power (800 CIPA)
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Vlogging Comparison

Panasonic GX85 Vlogging features
Pentax 645D Vlogging features
35
touch screen
built in image stabilization (Sensor based 5-axis)
has face detection autofocus
high quality video (3840 x 2160 pixels)
display isn't selfie friendly
does not have external mic jack
9
can't shoot video
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Panasonic GX85 vs Pentax 645D Specifications

Detailed spec comparison table for Panasonic GX85 and Pentax 645D
 Panasonic Lumix DMC-GX85Pentax 645D
General Information
Brand Panasonic Pentax
Model type Panasonic Lumix DMC-GX85 Pentax 645D
Other name Lumix DMC-GX80 / Lumix DMC-GX7 Mark II -
Category Advanced Mirrorless Pro DSLR
Launched 2016-04-05 2010-03-10
Physical type Rangefinder-style mirrorless Large SLR
Sensor Information
Chip Venus Engine Prime II
Sensor type CMOS CCD
Sensor size Four Thirds Medium format
Sensor dimensions 17.3 x 13mm 44 x 33mm
Sensor surface area 224.9mm² 1,452.0mm²
Sensor resolution 16MP 40MP
Anti alias filter
Aspect ratio 1:1, 4:3, 3:2 and 16:9 4:3
Highest resolution 4592 x 3448 7264 x 5440
Highest native ISO 25600 1600
Min native ISO 200 200
RAW files
Min boosted ISO 100 100
Autofocusing
Manual focusing
AF touch
Continuous AF
AF single
Tracking AF
AF selectice
AF center weighted
AF multi area
Live view AF
Face detect focusing
Contract detect focusing
Phase detect focusing
Total focus points 49 11
Lens
Lens support Micro Four Thirds Pentax 645AF2
Amount of lenses 107 6
Crop factor 2.1 0.8
Screen
Type of display Tilting Fixed Type
Display sizing 3 inch 3 inch
Resolution of display 1,040k dots 921k dots
Selfie friendly
Liveview
Touch friendly
Display technology - TFT Color LCD with wide-viewing angle and with AR coating
Viewfinder Information
Viewfinder type Electronic Optical (pentaprism)
Viewfinder resolution 2,764k dots -
Viewfinder coverage 100 percent 98 percent
Viewfinder magnification - 0.85x
Features
Lowest shutter speed 60s 30s
Highest shutter speed 1/4000s 1/4000s
Highest quiet shutter speed 1/16000s -
Continuous shooting rate 8.0 frames/s 1.0 frames/s
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Custom WB
Image stabilization
Inbuilt flash
Flash distance 6.00 m (at ISO 200) no built-in flash
Flash modes Auto, auto w/redeye reduction, forced on, forced on w/redeye reduction, slow sync, slow sync w/redeye reduction, forced off Auto, On, Off, Red-eye, Slow Sync, Rear Curtain
Hot shoe
AEB
White balance bracketing
Highest flash synchronize - 1/125s
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Supported video resolutions 3840 x 2160 (30p, 24p), 1920 x 1080 (60p, 60i, 30p, 24p), 1280 x 720 (30p), 640 x 480 (30p) -
Highest video resolution 3840x2160 None
Video data format MPEG-4, AVCHD -
Mic support
Headphone support
Connectivity
Wireless Built-In None
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environment sealing
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 426g (0.94 lbs) 1480g (3.26 lbs)
Physical dimensions 122 x 71 x 44mm (4.8" x 2.8" x 1.7") 156 x 117 x 119mm (6.1" x 4.6" x 4.7")
DXO scores
DXO All around rating 71 82
DXO Color Depth rating 22.9 24.6
DXO Dynamic range rating 12.6 12.6
DXO Low light rating 662 1262
Other
Battery life 290 shots 800 shots
Form of battery Battery Pack Battery Pack
Battery ID - D-LI90
Self timer Yes Yes (2 or 10 sec)
Time lapse feature
Storage type SD/SDHC/SDXC card SD/SDHC
Card slots One 2
Cost at launch $800 $4,000