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Panasonic GX8 vs Pentax K20D

Portability
74
Imaging
59
Features
84
Overall
69
Panasonic Lumix DMC-GX8 front
 
Pentax K20D front
Portability
59
Imaging
53
Features
52
Overall
52

Panasonic GX8 vs Pentax K20D Key Specs

Panasonic GX8
(Full Review)
  • 20MP - Four Thirds Sensor
  • 3" Fully Articulated Display
  • ISO 200 - 25600
  • Sensor based Image Stabilization
  • 1/8000s Maximum Shutter
  • 3840 x 2160 video
  • Micro Four Thirds Mount
  • 487g - 133 x 78 x 63mm
  • Launched July 2015
  • Previous Model is Panasonic GX7
Pentax K20D
(Full Review)
  • 15MP - APS-C Sensor
  • 2.7" Fixed Display
  • ISO 100 - 3200 (Raise to 6400)
  • Sensor based Image Stabilization
  • No Video
  • Pentax KAF2 Mount
  • 800g - 142 x 101 x 70mm
  • Announced June 2008
  • Replaced the Pentax K10D
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Panasonic GX8 vs Pentax K20D Overview

The following is a extensive comparison of the Panasonic GX8 vs Pentax K20D, one is a Advanced Mirrorless and the other is a Advanced DSLR by manufacturers Panasonic and Pentax. There is a sizeable difference between the image resolutions of the GX8 (20MP) and K20D (15MP) and the GX8 (Four Thirds) and K20D (APS-C) feature different sensor sizing.

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The GX8 was brought out 7 years after the K20D which is quite a large gap as far as tech is concerned. Each of the cameras offer different body type with the Panasonic GX8 being a Rangefinder-style mirrorless camera and the Pentax K20D being a Mid-size SLR camera.

Before getting through a more detailed comparison, below is a quick introduction of how the GX8 matches up vs the K20D for portability, imaging, features and an overall mark.

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Reasons to pick Panasonic GX8 over the Pentax K20D

 GX8 K20D 
AnnouncedJuly 2015June 2008Newer by 86 months
Display typeFully ArticulatedFixed Fully Articulating display
Display sizing3"2.7"Larger display (+0.3")
Display resolution1040k230kClearer display (+810k dot)
Selfie screen Easy selfies
Touch display Easily navigate

Reasons to pick Pentax K20D over the Panasonic GX8

 K20D GX8 

Common features in the Panasonic GX8 and Pentax K20D

 GX8 K20D 
Manually focus Dial exact focusing

Panasonic GX8 vs Pentax K20D Physical Comparison

For anybody who is looking to travel with your camera regularly, you will need to factor in its weight and dimensions. The Panasonic GX8 enjoys outside measurements of 133mm x 78mm x 63mm (5.2" x 3.1" x 2.5") along with a weight of 487 grams (1.07 lbs) and the Pentax K20D has dimensions of 142mm x 101mm x 70mm (5.6" x 4.0" x 2.8") accompanied by a weight of 800 grams (1.76 lbs).

Compare the Panasonic GX8 vs Pentax K20D in the all new Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses

Remember, the weight of an Interchangeable Lens Camera will change dependant on the lens you choose at that moment. Underneath is the front view overall size comparison of the GX8 against the K20D.

Panasonic GX8 vs Pentax K20D size comparison

Factoring in size and weight, the portability score of the GX8 and K20D is 74 and 59 respectively.

Panasonic GX8 vs Pentax K20D top view buttons comparison

Panasonic GX8 vs Pentax K20D Sensor Comparison

Oftentimes, it is very tough to imagine the difference between sensor dimensions simply by reviewing specifications. The picture underneath will offer you a stronger sense of the sensor measurements in the GX8 and K20D.

To sum up, each of these cameras enjoy different megapixels and different sensor dimensions. The GX8 due to its tinier sensor is going to make getting shallower depth of field more challenging and the Panasonic GX8 will offer greater detail having its extra 5 Megapixels. Greater resolution will also let you crop images far more aggressively. The newer GX8 should have an advantage in sensor innovation.

Panasonic GX8 vs Pentax K20D sensor size comparison

Panasonic GX8 vs Pentax K20D Screen and ViewFinder

Panasonic GX8 vs Pentax K20D Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Panasonic GX8 Portrait photography info
Pentax K20D Portrait photography info
75
manual focus
sensor resolution is decent (20 megapixels)
sensor size is nice (Four Thirds)
provides face detect autofocus
exports RAW files
71
has manual focus
good MP (15MP)
decent sensor size (APS-C)
exports RAW files
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Street Comparison

Panasonic GX8 Street photography information
Pentax K20D Street photography information
80
screen can move to multiple angles
has image stabilization (Sensor based)
sensor size is nice (Four Thirds)
exports RAW files
offers touch to focus
weather proof
good ISO range (25,600)
65
built in image stabilization (Sensor based)
decent sensor size (APS-C)
exports RAW files
weather sealing
fixed screen
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Sports Comparison

Panasonic GX8 as a Sports photography camera
Pentax K20D as a Sports photography camera
68
high shutter speed (1/8,000 seconds)
silent shutter (1/16,000 seconds)
has image stabilization (Sensor based)
sensor resolution is decent (20 megapixels)
sensor size is nice (Four Thirds)
provides tracking focus
weather proof
low battery power (330 CIPA)
doesn't have phase detect autofocus
68
built in image stabilization (Sensor based)
good MP (15MP)
decent sensor size (APS-C)
weather sealing
comes with phase detect auto focus
slow continuous shooting (3.0 frames per second)
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Travel Comparison

Panasonic GX8 Travel photography information
Pentax K20D Travel photography information
73
weather proof
offers touch to focus
sensor resolution is decent (20MP)
display is selfie friendly
low battery power (330 CIPA)
64
weather sealing
good MP (15 megapixels)
built-in flash
doesn't feature selfie friendly display
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Landscape Comparison

Panasonic GX8 Landscape photography advice
Pentax K20D Landscape photography advice
76
manual focus
swap lenses (Micro Four Thirds mount)
pretty good screen size (3")
has image stabilization (Sensor based)
sensor resolution is decent (20MP)
sensor size is nice (Four Thirds)
good ISO range (25,600)
exports RAW files
weather proof
low battery power (330 CIPA)
70
has manual focus
switch lenses (Pentax KAF2 mount)
built in image stabilization (Sensor based)
good MP (15MP)
decent sensor size (APS-C)
exports RAW files
weather sealing
small screen (2.7 inches)
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Vlogging Comparison

Panasonic GX8 Vlogging factors
Pentax K20D Vlogging factors
81
display is selfie friendly
touchscreen functionality
has image stabilization (Sensor based)
provides face detect autofocus
high quality video (3840 x 2160 resolution)
includes mic jack
9
lack of video recording
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Panasonic GX8 vs Pentax K20D Specifications

Detailed spec comparison table for Panasonic GX8 and Pentax K20D
 Panasonic Lumix DMC-GX8Pentax K20D
General Information
Make Panasonic Pentax
Model Panasonic Lumix DMC-GX8 Pentax K20D
Class Advanced Mirrorless Advanced DSLR
Launched 2015-07-16 2008-06-25
Body design Rangefinder-style mirrorless Mid-size SLR
Sensor Information
Processor Venus Engine -
Sensor type CMOS CMOS
Sensor size Four Thirds APS-C
Sensor dimensions 17.3 x 13mm 23.4 x 15.6mm
Sensor surface area 224.9mm² 365.0mm²
Sensor resolution 20 megapixel 15 megapixel
Anti aliasing filter
Aspect ratio 1:1, 4:3, 3:2 and 16:9 3:2
Full resolution 5184 x 3888 4672 x 3104
Max native ISO 25600 3200
Max boosted ISO - 6400
Lowest native ISO 200 100
RAW format
Lowest boosted ISO 100 -
Autofocusing
Focus manually
Autofocus touch
Continuous autofocus
Autofocus single
Tracking autofocus
Selective autofocus
Autofocus center weighted
Autofocus multi area
Autofocus live view
Face detect focus
Contract detect focus
Phase detect focus
Number of focus points 49 11
Lens
Lens mount Micro Four Thirds Pentax KAF2
Available lenses 107 151
Crop factor 2.1 1.5
Screen
Display type Fully Articulated Fixed Type
Display diagonal 3 inches 2.7 inches
Display resolution 1,040k dot 230k dot
Selfie friendly
Liveview
Touch display
Viewfinder Information
Viewfinder type Electronic Optical (pentaprism)
Viewfinder resolution 2,360k dot -
Viewfinder coverage 100 percent 95 percent
Viewfinder magnification 0.77x 0.64x
Features
Lowest shutter speed 60 secs 30 secs
Highest shutter speed 1/8000 secs 1/4000 secs
Highest quiet shutter speed 1/16000 secs -
Continuous shooting speed 12.0fps 3.0fps
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Custom white balance
Image stabilization
Built-in flash
Flash range no built-in flash 13.00 m (at ISO 100)
Flash options Auto, auto w/redeye reduction, forced on, forced on w/redeye reduction, slow sync, slow sync w/redeye reduction, forced off Auto, Red-Eye, Slow, Red-Eye Slow, Rear curtain, wireless
Hot shoe
AEB
WB bracketing
Highest flash sync - 1/180 secs
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Video resolutions 3840 x 2160 (30p, 24p), 1920 x 1080 (60p, 30p), 1280 x 720 (60p, 30p), 1280 x 720 (30p), 640 x 480 (30p) -
Max video resolution 3840x2160 None
Video file format MPEG-4, AVCHD -
Mic jack
Headphone jack
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 proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 487g (1.07 pounds) 800g (1.76 pounds)
Dimensions 133 x 78 x 63mm (5.2" x 3.1" x 2.5") 142 x 101 x 70mm (5.6" x 4.0" x 2.8")
DXO scores
DXO All around score 75 65
DXO Color Depth score 23.5 22.9
DXO Dynamic range score 12.6 11.1
DXO Low light score 806 639
Other
Battery life 330 photographs -
Style of battery Battery Pack -
Battery model - D-LI50
Self timer Yes Yes (2 or 10 sec)
Time lapse feature
Type of storage SD/SDHC/SDXC card SD/MMC/SDHC card
Storage slots One One
Price at launch $898 $700