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Panasonic GM1 vs Pentax K20D

Portability
93
Imaging
53
Features
60
Overall
55
Panasonic Lumix DMC-GM1 front
 
Pentax K20D front
Portability
59
Imaging
53
Features
52
Overall
52

Panasonic GM1 vs Pentax K20D 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
  • Revealed December 2013
  • Later Model is Panasonic GM5
Pentax K20D
(Full Review)
  • 15MP - APS-C Sensor
  • 2.7" Fixed Display
  • ISO 100 - 3200 (Boost to 6400)
  • Sensor based Image Stabilization
  • No Video
  • Pentax KAF2 Mount
  • 800g - 142 x 101 x 70mm
  • Released June 2008
  • Superseded the Pentax K10D
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Panasonic GM1 vs Pentax K20D Overview

Below is a extended comparison of the Panasonic GM1 vs Pentax K20D, one being a Entry-Level Mirrorless and the other is a Advanced DSLR by companies Panasonic and Pentax. The resolution of the GM1 (16MP) and the K20D (15MP) is very comparable but the GM1 (Four Thirds) and K20D (APS-C) posses totally different sensor sizing.

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The GM1 was manufactured 5 years later than the K20D and that is a fairly large gap as far as camera tech is concerned. Both the cameras feature different body design with the Panasonic GM1 being a Rangefinder-style mirrorless camera and the Pentax K20D being a Mid-size SLR camera.

Before diving right into a detailed comparison, here is a short summary of how the GM1 scores against the K20D for portability, imaging, features and an overall grade.

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Reasons to pick Panasonic GM1 over the Pentax K20D

 GM1 K20D 
ReleasedDecember 2013June 2008More recent by 67 months
Display size3"2.7"Larger display (+0.3")
Display resolution1036k230kClearer display (+806k dot)
Touch friendly display Easily navigate

Reasons to pick Pentax K20D over the Panasonic GM1

 K20D GM1 

Common features in the Panasonic GM1 and Pentax K20D

 GM1 K20D 
Manual focus Very accurate focusing
Display typeFixed Fixed Fixed display
Selfie screen Lack of selfie screen

Panasonic GM1 vs Pentax K20D Physical Comparison

If you are planning to lug around your camera frequently, you are going to need to take into account its weight and size. The Panasonic GM1 features outside dimensions of 99mm x 55mm x 30mm (3.9" x 2.2" x 1.2") along with a weight of 204 grams (0.45 lbs) and the Pentax K20D has specifications of 142mm x 101mm x 70mm (5.6" x 4.0" x 2.8") having a weight of 800 grams (1.76 lbs).

Compare the Panasonic GM1 vs Pentax K20D in the new Camera with Lens Size Comparison Tool. Camera Size Comparison with Lenses

Take into account, the weight of an Interchangeable Lens Camera will vary based on the lens you choose at the time. Here is a front view physical size comparison of the GM1 and the K20D.

Panasonic GM1 vs Pentax K20D size comparison

Taking into consideration size and weight, the portability rating of the GM1 and K20D is 93 and 59 respectively.

Panasonic GM1 vs Pentax K20D top view buttons comparison

Panasonic GM1 vs Pentax K20D Sensor Comparison

Often, it is hard to see the contrast in sensor measurements simply by going through a spec sheet. The visual underneath will offer you a stronger sense of the sensor sizes in the GM1 and K20D.

Clearly, both of those cameras come with different resolutions and different sensor measurements. The GM1 featuring a smaller sensor will make shooting shallower depth of field more difficult and the Panasonic GM1 will provide extra detail due to its extra 1MP. Greater resolution can also allow you to crop photos a good deal more aggressively. The more modern GM1 will have a benefit with regard to sensor innovation.

Panasonic GM1 vs Pentax K20D sensor size comparison

Panasonic GM1 vs Pentax K20D Screen and ViewFinder

Panasonic GM1 vs Pentax K20D Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Panasonic GM1 Portrait photography highlights
Pentax K20D Portrait photography highlights
65
you can focus manually
good megapixels (16 megapixels)
decent sensor size (Four Thirds)
offers face detect autofocus
supports RAW formats
can't use external flash
71
has manual focus
megapixel count good (15MP)
sensor size is nice (APS-C)
exports RAW formats
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Street Comparison

Panasonic GM1 Street photography advice
Pentax K20D Street photography advice
77
decent sensor size (Four Thirds)
supports RAW formats
includes touch to focus
lighter than competition (204 grams)
great ISO range (25,600)
screen does not articulate
no image stabilization
65
built in image stabilization (Sensor based)
sensor size is nice (APS-C)
exports RAW formats
weather proofing
no articulating screen
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Sports Comparison

Panasonic GM1 Sports photography features
Pentax K20D Sports photography features
48
quiet mode (1/16,000s)
good megapixels (16MP)
decent sensor size (Four Thirds)
offers tracking focus
max shutter speed is low (1/500s)
painfully slow continuous shooting (5.0 fps)
no image stabilization
terrible battery pack (230 CIPA)
no phase detect autofocus
68
built in image stabilization (Sensor based)
megapixel count good (15 megapixels)
sensor size is nice (APS-C)
weather proofing
has phase detect AF
slow continuous shooting (3.0 fps)
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Travel Comparison

Panasonic GM1 Travel photography factors
Pentax K20D Travel photography factors
74
lighter than competition (204g)
includes touch to focus
good megapixels (16MP)
built-in flash
terrible battery pack (230 shots)
does not posses selfie friendly display
64
weather proofing
megapixel count good (15 megapixels)
built-in flash
display is not selfie friendly
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Landscape Comparison

Panasonic GM1 Landscape photography features
Pentax K20D Landscape photography features
69
you can focus manually
switch lenses (Micro Four Thirds mount)
pretty good screen size (3")
good megapixels (16 megapixels)
decent sensor size (Four Thirds)
great ISO range (25,600)
supports RAW formats
no image stabilization
terrible battery pack (230 shots)
70
has manual focus
switch lenses (Pentax KAF2 mount)
built in image stabilization (Sensor based)
megapixel count good (15MP)
sensor size is nice (APS-C)
exports RAW formats
weather proofing
screen is somewhat small (2.7 inch)
Photography Glossary

Vlogging Comparison

Panasonic GM1 Vlogging features
Pentax K20D Vlogging features
35
touchscreen functionality
offers face detect autofocus
high quality video (1920 x 1080 pxls)
lighter than competition (204 grams)
does not posses selfie friendly display
no image stabilization
does not have mic support
9
no video recording
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Panasonic GM1 vs Pentax K20D Specifications

Detailed spec comparison table for Panasonic GM1 and Pentax K20D
 Panasonic Lumix DMC-GM1Pentax K20D
General Information
Manufacturer Panasonic Pentax
Model type Panasonic Lumix DMC-GM1 Pentax K20D
Category Entry-Level Mirrorless Advanced DSLR
Revealed 2013-12-19 2008-06-25
Body design Rangefinder-style mirrorless Mid-size SLR
Sensor Information
Sensor type CMOS CMOS
Sensor size Four Thirds APS-C
Sensor measurements 17.3 x 13mm 23.4 x 15.6mm
Sensor area 224.9mm² 365.0mm²
Sensor resolution 16MP 15MP
Anti alias filter
Aspect ratio 1:1, 4:3, 3:2 and 16:9 3:2
Highest resolution 4592 x 3448 4672 x 3104
Highest native ISO 25600 3200
Highest boosted ISO - 6400
Min native ISO 200 100
RAW support
Autofocusing
Focus manually
Touch focus
Autofocus continuous
Autofocus single
Tracking autofocus
Autofocus selectice
Autofocus center weighted
Multi area autofocus
Live view autofocus
Face detect focus
Contract detect focus
Phase detect focus
Total focus points 23 11
Lens
Lens mount type Micro Four Thirds Pentax KAF2
Number of lenses 107 151
Crop factor 2.1 1.5
Screen
Display type Fixed Type Fixed Type
Display diagonal 3" 2.7"
Display resolution 1,036k dot 230k dot
Selfie friendly
Liveview
Touch functionality
Display tech TFT Color LCD with wide-viewing angle -
Viewfinder Information
Viewfinder None Optical (pentaprism)
Viewfinder coverage - 95 percent
Viewfinder magnification - 0.64x
Features
Lowest shutter speed 60s 30s
Highest shutter speed 1/500s 1/4000s
Highest quiet shutter speed 1/16000s -
Continuous shooting speed 5.0 frames per second 3.0 frames per second
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Change white balance
Image stabilization
Inbuilt flash
Flash distance 4.00 m 13.00 m (at ISO 100)
Flash modes Auto, On, Off, Red-Eye, Slow Sync Auto, Red-Eye, Slow, Red-Eye Slow, Rear curtain, wireless
External flash
AE bracketing
WB bracketing
Highest flash sync 1/50s 1/180s
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Video resolutions 1920 x 1080 (60i, 50i, 24p), 1280 x 720p (60p, 50p), 640 x 480 (30p, 25p) -
Highest video resolution 1920x1080 None
Video format MPEG-4, AVCHD -
Microphone input
Headphone input
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 seal
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 204 gr (0.45 lbs) 800 gr (1.76 lbs)
Physical dimensions 99 x 55 x 30mm (3.9" x 2.2" x 1.2") 142 x 101 x 70mm (5.6" x 4.0" x 2.8")
DXO scores
DXO All around rating 66 65
DXO Color Depth rating 22.3 22.9
DXO Dynamic range rating 11.7 11.1
DXO Low light rating 660 639
Other
Battery life 230 shots -
Type of battery Battery Pack -
Battery ID - D-LI50
Self timer Yes (2 or 10 sec, 10 sec (3 images)) Yes (2 or 10 sec)
Time lapse recording
Type of storage SD/SDHC/SDXC SD/MMC/SDHC card
Storage slots One One
Cost at launch $750 $700