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Panasonic GM1 vs Pentax 645D

Portability
93
Imaging
53
Features
60
Overall
55
Panasonic Lumix DMC-GM1 front
 
Pentax 645D front
Portability
50
Imaging
76
Features
52
Overall
66

Panasonic GM1 vs Pentax 645D Key Specs

Panasonic GM1
(Full Review)
  • 16MP - Four Thirds Sensor
  • 3" Fixed Display
  • ISO 200 - 25600
  • 1920 x 1080 video
  • Micro Four Thirds Mount
  • 204g - 99 x 55 x 30mm
  • Introduced December 2013
  • Refreshed by Panasonic GM5
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
  • Announced March 2010
  • Refreshed by Pentax 645Z
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Panasonic GM1 vs Pentax 645D Overview

Let's look a bit more closely at the Panasonic GM1 versus Pentax 645D, one is a Entry-Level Mirrorless and the latter is a Pro DSLR by brands Panasonic and Pentax. There is a sizeable difference between the resolutions of the GM1 (16MP) and 645D (40MP) and the GM1 (Four Thirds) and 645D (Medium format) posses totally different sensor measurements.

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The GM1 was brought out 3 years after the 645D which is quite a large gap as far as tech is concerned. Both the cameras have different body design with the Panasonic GM1 being a Rangefinder-style mirrorless camera and the Pentax 645D being a Large SLR camera.

Before going straight to a in-depth comparison, here is a concise highlight of how the GM1 scores versus the 645D with regard to portability, imaging, features and an overall score.

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Reasons to pick Panasonic GM1 over the Pentax 645D

 GM1 645D 
AnnouncedDecember 2013March 2010More modern by 46 months
Screen resolution1036k921kClearer screen (+115k dot)
Touch friendly screen Quickly navigate

Reasons to pick Pentax 645D over the Panasonic GM1

 645D GM1 

Common features in the Panasonic GM1 and Pentax 645D

 GM1 645D 
Manual focus Very accurate focusing
Screen typeFixed Fixed Fixed screen
Screen dimensions3"3"Equal screen measurements
Selfie screen No selfie screen

Panasonic GM1 vs Pentax 645D Physical Comparison

For anyone who is aiming to carry around your camera, you need to consider its weight and proportions. The Panasonic GM1 has got exterior dimensions of 99mm x 55mm x 30mm (3.9" x 2.2" x 1.2") and a weight of 204 grams (0.45 lbs) and the Pentax 645D has measurements of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") having a weight of 1480 grams (3.26 lbs).

Check out the Panasonic GM1 versus Pentax 645D in the latest Camera with Lens Size Comparison Tool. Camera Size Comparison with Lenses

Bear in mind, the weight of an Interchangeable Lens Camera will change dependant on the lens you are utilising at that moment. Following is a front view scale comparison of the GM1 compared to the 645D.

Panasonic GM1 vs Pentax 645D size comparison

Looking at size and weight, the portability grade of the GM1 and 645D is 93 and 50 respectively.

Panasonic GM1 vs Pentax 645D top view buttons comparison

Panasonic GM1 vs Pentax 645D Sensor Comparison

Often, it can be tough to see the difference between sensor sizes only by reading a spec sheet. The picture here will help offer you a greater sense of the sensor sizes in the GM1 and 645D.

Clearly, each of the cameras provide different megapixel count and different sensor sizes. The GM1 featuring a tinier sensor will make shooting shallower depth of field more difficult and the Pentax 645D will deliver more detail having its extra 24 Megapixels. Higher resolution will also let you crop photographs more aggressively. The fresher GM1 will have an edge when it comes to sensor innovation.

Panasonic GM1 vs Pentax 645D sensor size comparison

Panasonic GM1 vs Pentax 645D Screen and ViewFinder

Panasonic GM1 vs Pentax 645D Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Portrait photography with Panasonic GM1
Portrait photography with Pentax 645D
65
has manual focus
resolution is good (16MP)
sensor size is decent (Four Thirds)
comes with face detect focusing
supports RAW formats
can't use external flash
77
has manual focus
megapixel count fantastic (40 megapixels)
sensor size is big (Medium format)
delivers RAW files
no liveview
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Street Comparison

Panasonic GM1 as a Street photography camera
Pentax 645D as a Street photography camera
77
sensor size is decent (Four Thirds)
supports RAW formats
comes with touch focus
lighter than competition (204g)
great high ISO (25,600)
no articulating screen
lack of image stabilization
58
sensor size is big (Medium format)
delivers RAW files
weather proofing
fixed screen
lack of image stabilization
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Sports Comparison

Sports photography with Panasonic GM1
Sports photography with Pentax 645D
48
quiet mode (1/16,000 seconds)
resolution is good (16MP)
sensor size is decent (Four Thirds)
comes with tracking focus
low maximum shutter speed (1/500 seconds)
slow continuous shooting (5.0 fps)
lack of image stabilization
bad battery pack (230 shots)
doesn't have phase detect AF
63
megapixel count fantastic (40MP)
sensor size is big (Medium format)
weather proofing
sensor has phase detect AF
no liveview
slow continuous shooting (1.0 frames per second)
lack of image stabilization
low battery life (800 per charge)
Photography Glossary

Travel Comparison

Panasonic GM1 Travel photography details
Pentax 645D Travel photography details
74
lighter than competition (204g)
comes with touch focus
resolution is good (16 megapixels)
flash built-in
bad battery pack (230 CIPA)
does not offer selfie friendly display
55
weather proofing
megapixel count fantastic (40 megapixels)
low battery life (800 shots)
display isn't selfie friendly
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Landscape Comparison

Panasonic GM1 as a Landscape photography camera
Pentax 645D as a Landscape photography camera
69
has manual focus
interchangeable lenses (Micro Four Thirds mount)
screen size is good (3 inch)
resolution is good (16MP)
sensor size is decent (Four Thirds)
great high ISO (25,600)
supports RAW formats
lack of image stabilization
bad battery pack (230 per charge)
72
has manual focus
interchangeable lenses (Pentax 645AF2 mount)
nice screen size (3 inches)
megapixel count fantastic (40MP)
sensor size is big (Medium format)
no low pass filter
delivers RAW files
weather proofing
2 card slots
no liveview
lack of image stabilization
low battery life (800 per charge)
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Vlogging Comparison

Panasonic GM1 Vlogging highlights
Pentax 645D Vlogging highlights
35
touchscreen functionality
comes with face detect focusing
good video quality (1920 x 1080 pxls)
lighter than competition (204 grams)
does not offer selfie friendly display
lack of image stabilization
doesn't have microphone support
9
lack of video recording
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Panasonic GM1 vs Pentax 645D Specifications

Detailed spec comparison table for Panasonic GM1 and Pentax 645D
 Panasonic Lumix DMC-GM1Pentax 645D
General Information
Make Panasonic Pentax
Model Panasonic Lumix DMC-GM1 Pentax 645D
Type Entry-Level Mirrorless Pro DSLR
Introduced 2013-12-19 2010-03-10
Physical type Rangefinder-style mirrorless Large SLR
Sensor Information
Processor Chip - Prime II
Sensor type CMOS CCD
Sensor size Four Thirds Medium format
Sensor dimensions 17.3 x 13mm 44 x 33mm
Sensor area 224.9mm² 1,452.0mm²
Sensor resolution 16 megapixel 40 megapixel
Anti aliasing filter
Aspect ratio 1:1, 4:3, 3:2 and 16:9 4:3
Max resolution 4592 x 3448 7264 x 5440
Max native ISO 25600 1600
Min native ISO 200 200
RAW images
Min enhanced ISO - 100
Autofocusing
Manual focus
Touch focus
Continuous autofocus
Autofocus single
Tracking autofocus
Autofocus selectice
Autofocus center weighted
Autofocus multi area
Live view autofocus
Face detect focus
Contract detect focus
Phase detect focus
Number of focus points 23 11
Lens
Lens mounting type Micro Four Thirds Pentax 645AF2
Total lenses 107 6
Crop factor 2.1 0.8
Screen
Type of display Fixed Type Fixed Type
Display sizing 3 inch 3 inch
Display resolution 1,036 thousand dots 921 thousand dots
Selfie friendly
Liveview
Touch screen
Display technology TFT Color LCD with wide-viewing angle TFT Color LCD with wide-viewing angle and with AR coating
Viewfinder Information
Viewfinder None Optical (pentaprism)
Viewfinder coverage - 98%
Viewfinder magnification - 0.85x
Features
Minimum shutter speed 60s 30s
Fastest shutter speed 1/500s 1/4000s
Fastest quiet shutter speed 1/16000s -
Continuous shutter rate 5.0 frames/s 1.0 frames/s
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Custom white balance
Image stabilization
Integrated flash
Flash range 4.00 m no built-in flash
Flash options Auto, On, Off, Red-Eye, Slow Sync Auto, On, Off, Red-eye, Slow Sync, Rear Curtain
External flash
AEB
WB bracketing
Fastest flash synchronize 1/50s 1/125s
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Supported video resolutions 1920 x 1080 (60i, 50i, 24p), 1280 x 720p (60p, 50p), 640 x 480 (30p, 25p) -
Max video resolution 1920x1080 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 proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 204 grams (0.45 lbs) 1480 grams (3.26 lbs)
Physical dimensions 99 x 55 x 30mm (3.9" x 2.2" x 1.2") 156 x 117 x 119mm (6.1" x 4.6" x 4.7")
DXO scores
DXO Overall score 66 82
DXO Color Depth score 22.3 24.6
DXO Dynamic range score 11.7 12.6
DXO Low light score 660 1262
Other
Battery life 230 photos 800 photos
Battery style Battery Pack Battery Pack
Battery model - D-LI90
Self timer Yes (2 or 10 sec, 10 sec (3 images)) Yes (2 or 10 sec)
Time lapse recording
Storage type SD/SDHC/SDXC SD/SDHC
Card slots Single Two
Price at release $750 $4,000