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Panasonic G1 vs Pentax 645D

Portability
82
Imaging
46
Features
50
Overall
47
Panasonic Lumix DMC-G1 front
 
Pentax 645D front
Portability
50
Imaging
76
Features
52
Overall
66

Panasonic G1 vs Pentax 645D Key Specs

Panasonic G1
(Full Review)
  • 12MP - Four Thirds Sensor
  • 3" Fully Articulated Screen
  • ISO 100 - 1600 (Push to 3200)
  • No Video
  • Micro Four Thirds Mount
  • 360g - 124 x 84 x 45mm
  • Launched January 2009
  • Replacement is Panasonic G2
Pentax 645D
(Full Review)
  • 40MP - Medium format Sensor
  • 3" Fixed Display
  • ISO 200 - 1600
  • No Anti-Alias Filter
  • No Video
  • Pentax 645AF2 Mount
  • 1480g - 156 x 117 x 119mm
  • Released March 2010
  • Later Model is Pentax 645Z
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Panasonic G1 vs Pentax 645D Overview

Following is a comprehensive comparison of the Panasonic G1 and Pentax 645D, former is a Entry-Level Mirrorless while the other is a Pro DSLR by brands Panasonic and Pentax. There is a noticeable difference among the sensor resolutions of the G1 (12MP) and 645D (40MP) and the G1 (Four Thirds) and 645D (Medium format) provide different sensor size.

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The G1 was unveiled 13 months prior to the 645D making them a generation away from each other. Both the cameras have different body design with the Panasonic G1 being a SLR-style mirrorless camera and the Pentax 645D being a Large SLR camera.

Before diving straight to a detailed comparison, here is a quick overview of how the G1 grades versus the 645D when it comes to portability, imaging, features and an overall score.

Photography Glossary
	
	

Reasons to pick Panasonic G1 over the Pentax 645D

 G1 645D 
Display typeFully ArticulatedFixed Fully Articulating display
Selfie screen Take selfies

Reasons to pick Pentax 645D over the Panasonic G1

 645D G1 
ReleasedMarch 2010January 2009More modern by 13 months
Display resolution921k460kCrisper display (+461k dot)

Common features in the Panasonic G1 and Pentax 645D

 G1 645D 
Manually focus Very accurate focus
Display dimensions3"3"Equal display size
Touch friendly display Absent Touch friendly display

Panasonic G1 vs Pentax 645D Physical Comparison

When you are going to carry around your camera often, you'll need to factor in its weight and volume. The Panasonic G1 has got outside measurements of 124mm x 84mm x 45mm (4.9" x 3.3" x 1.8") and a weight of 360 grams (0.79 lbs) while the Pentax 645D has sizing of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") accompanied by a weight of 1480 grams (3.26 lbs).

Take a look at the Panasonic G1 and Pentax 645D in our completely new Camera & Lens Size Comparison Tool. Camera Size Comparison with Lenses

Bear in mind, the weight of an ILC will differ dependant on the lens you are employing at the time. Here is a front view dimension comparison of the G1 against the 645D.

Panasonic G1 vs Pentax 645D size comparison

Using size and weight, the portability rating of the G1 and 645D is 82 and 50 respectively.

Panasonic G1 vs Pentax 645D top view buttons comparison

Panasonic G1 vs Pentax 645D Sensor Comparison

In many cases, it is very difficult to imagine the difference in sensor sizes merely by seeing specs. The pic underneath should provide you a much better sense of the sensor sizing in the G1 and 645D.

All in all, both the cameras provide different resolutions and different sensor sizes. The G1 using its smaller sensor is going to make achieving bokeh more challenging and the Pentax 645D will produce greater detail having an extra 28MP. Greater resolution will also help you crop photos more aggressively. The more aged G1 will be behind when it comes to sensor technology.

Panasonic G1 vs Pentax 645D sensor size comparison

Panasonic G1 vs Pentax 645D Screen and ViewFinder

Panasonic G1 vs Pentax 645D Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Panasonic G1 Portrait photography details
Pentax 645D Portrait photography details
57
focusing manually
good sensor size (Four Thirds)
supports RAW files
low resolution (12 megapixels)
77
focusing manually
MP count high (40 megapixels)
sensor size is big (Medium format)
exports RAW files
no liveview
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Street Comparison

Panasonic G1 Street photography factors
Pentax 645D Street photography factors
72
fully articulated screen
good sensor size (Four Thirds)
supports RAW files
no image stabilization
58
sensor size is big (Medium format)
exports RAW files
weather proofing
no articulating screen
lack of image stabilization
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Sports Comparison

Panasonic G1 Sports photography info
Pentax 645D Sports photography info
33
good sensor size (Four Thirds)
painfully slow continuous shooting (3.0 frames/s)
no image stabilization
low resolution (12MP)
does not have phase detect auto focus
63
MP count high (40MP)
sensor size is big (Medium format)
weather proofing
sensor has phase detect AF
no liveview
slow frames per second (1.0 frames per second)
lack of image stabilization
bad battery power (800 shots)
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Travel Comparison

Panasonic G1 Travel photography highlights
Pentax 645D Travel photography highlights
62
built-in flash
screen is selfie friendly
doesn't have Timelapse function
low resolution (12MP)
55
weather proofing
MP count high (40 megapixels)
bad battery power (800 CIPA)
doesn't have a selfie friendly screen
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Landscape Comparison

Landscape photography with Panasonic G1
Landscape photography with Pentax 645D
57
focusing manually
switch lenses (Micro Four Thirds mount)
good sized screen (3 inches)
good sensor size (Four Thirds)
supports RAW files
no image stabilization
low resolution (12 megapixels)
doesn't have Timelapse function
72
focusing manually
change lenses (Pentax 645AF2 mount)
pretty good screen size (3 inch)
MP count high (40 megapixels)
sensor size is big (Medium format)
does not have anti-alias filter
exports RAW files
weather proofing
two card slots
no liveview
lack of image stabilization
bad battery power (800 shots)
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Vlogging Comparison

Panasonic G1 Vlogging info
Pentax 645D Vlogging info
18
can't record video
9
no video shooting
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Panasonic G1 vs Pentax 645D Specifications

Detailed spec comparison table for Panasonic G1 and Pentax 645D
 Panasonic Lumix DMC-G1Pentax 645D
General Information
Make Panasonic Pentax
Model Panasonic Lumix DMC-G1 Pentax 645D
Class Entry-Level Mirrorless Pro DSLR
Launched 2009-01-19 2010-03-10
Physical type SLR-style mirrorless Large SLR
Sensor Information
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 12 megapixels 40 megapixels
Anti aliasing filter
Aspect ratio 4:3, 3:2 and 16:9 4:3
Full resolution 4000 x 3000 7264 x 5440
Max native ISO 1600 1600
Max boosted ISO 3200 -
Lowest native ISO 100 200
RAW files
Lowest boosted ISO - 100
Autofocusing
Manual focus
Touch focus
Continuous AF
AF single
Tracking AF
Selective AF
AF center weighted
AF multi area
AF live view
Face detection AF
Contract detection AF
Phase detection AF
Number of focus points - 11
Lens
Lens mounting type Micro Four Thirds Pentax 645AF2
Amount of lenses 107 6
Crop factor 2.1 0.8
Screen
Screen type Fully Articulated Fixed Type
Screen size 3 inch 3 inch
Screen resolution 460k dots 921k dots
Selfie friendly
Liveview
Touch display
Screen technology - TFT Color LCD with wide-viewing angle and with AR coating
Viewfinder Information
Viewfinder Electronic Optical (pentaprism)
Viewfinder coverage 100 percent 98 percent
Viewfinder magnification - 0.85x
Features
Lowest shutter speed 60 seconds 30 seconds
Highest shutter speed 1/4000 seconds 1/4000 seconds
Continuous shooting rate 3.0 frames/s 1.0 frames/s
Shutter priority
Aperture priority
Manual mode
Exposure compensation Yes Yes
Set WB
Image stabilization
Built-in flash
Flash range 10.50 m no built-in flash
Flash modes Auto, On, Off, Red-Eye, Slow Sync Auto, On, Off, Red-eye, Slow Sync, Rear Curtain
External flash
Auto exposure bracketing
White balance bracketing
Highest flash synchronize 1/160 seconds 1/125 seconds
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Max video resolution None None
Mic port
Headphone port
Connectivity
Wireless None 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 360 grams (0.79 pounds) 1480 grams (3.26 pounds)
Physical dimensions 124 x 84 x 45mm (4.9" x 3.3" x 1.8") 156 x 117 x 119mm (6.1" x 4.6" x 4.7")
DXO scores
DXO All around score 53 82
DXO Color Depth score 21.1 24.6
DXO Dynamic range score 10.3 12.6
DXO Low light score 463 1262
Other
Battery life 330 photographs 800 photographs
Battery type Battery Pack Battery Pack
Battery model - D-LI90
Self timer Yes (2 or 10 sec) Yes (2 or 10 sec)
Time lapse shooting
Storage type SD/MMC/SDHC card SD/SDHC
Card slots Single 2
Launch price $0 $4,000