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Panasonic GX850 vs Pentax K-x

Portability
90
Imaging
55
Features
70
Overall
61
Panasonic Lumix DMC-GX850 front
 
Pentax K-x front
Portability
69
Imaging
52
Features
47
Overall
50

Panasonic GX850 vs Pentax K-x Key Specs

Panasonic GX850
(Full Review)
  • 16MP - Four Thirds Sensor
  • 3" Tilting Display
  • ISO 200 - 25600
  • No Anti-Alias Filter
  • 3840 x 2160 video
  • Micro Four Thirds Mount
  • 269g - 107 x 65 x 33mm
  • Announced January 2017
  • Alternate Name is Lumix DMC-GX800 / Lumix DMC-GF9
Pentax K-x
(Full Review)
  • 12MP - APS-C Sensor
  • 2.7" Fixed Screen
  • ISO 100 - 6400 (Bump to 12800)
  • Sensor based Image Stabilization
  • 1/6000s Max Shutter
  • 1280 x 720 video
  • Pentax KAF2 Mount
  • 580g - 123 x 92 x 68mm
  • Released December 2009
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Panasonic GX850 vs Pentax K-x Overview

In this write-up, we will be looking at the Panasonic GX850 and Pentax K-x, one is a Entry-Level Mirrorless and the latter is a Entry-Level DSLR by companies Panasonic and Pentax. There exists a huge gap between the sensor resolutions of the GX850 (16MP) and K-x (12MP) and the GX850 (Four Thirds) and K-x (APS-C) come with totally different sensor size.

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The GX850 was released 7 years after the K-x which is quite a significant gap as far as technology is concerned. Both of the cameras offer different body type with the Panasonic GX850 being a Rangefinder-style mirrorless camera and the Pentax K-x being a Compact SLR camera.

Before going through a complete comparison, below is a brief overview of how the GX850 matches up versus the K-x for portability, imaging, features and an overall score.

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Reasons to pick Panasonic GX850 over the Pentax K-x

 GX850 K-x 
ReleasedJanuary 2017December 2009More modern by 86 months
Screen typeTiltingFixed Tilting screen
Screen sizing3"2.7"Bigger screen (+0.3")
Screen resolution1040k230kClearer screen (+810k dot)
Selfie screen Easy selfies
Touch screen Quickly navigate

Reasons to pick Pentax K-x over the Panasonic GX850

 K-x GX850 

Common features in the Panasonic GX850 and Pentax K-x

 GX850 K-x 
Manual focus Dial accurate focusing

Panasonic GX850 vs Pentax K-x Physical Comparison

For anyone who is planning to carry around your camera often, you will need to take into account its weight and measurements. The Panasonic GX850 provides external measurements of 107mm x 65mm x 33mm (4.2" x 2.6" x 1.3") and a weight of 269 grams (0.59 lbs) while the Pentax K-x has proportions of 123mm x 92mm x 68mm (4.8" x 3.6" x 2.7") with a weight of 580 grams (1.28 lbs).

Examine the Panasonic GX850 and Pentax K-x 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 depending on the lens you have chosen at the time. Underneath is the front view over all size comparison of the GX850 and the K-x.

Panasonic GX850 vs Pentax K-x size comparison

Using dimensions and weight, the portability grade of the GX850 and K-x is 90 and 69 respectively.

Panasonic GX850 vs Pentax K-x top view buttons comparison

Panasonic GX850 vs Pentax K-x Sensor Comparison

Normally, it's difficult to visualise the contrast between sensor sizes just by reading technical specs. The pic underneath might provide you a far better sense of the sensor measurements in the GX850 and K-x.

As you have seen, both of these cameras offer different megapixel count and different sensor sizes. The GX850 due to its tinier sensor will make getting bokeh trickier and the Panasonic GX850 will offer you more detail as a result of its extra 4MP. Higher resolution can also let you crop shots a little more aggressively. The fresher GX850 is going to have a benefit when it comes to sensor innovation.

Panasonic GX850 vs Pentax K-x sensor size comparison

Panasonic GX850 vs Pentax K-x Screen and ViewFinder

Panasonic GX850 vs Pentax K-x Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Panasonic GX850 Portrait photography advice
Pentax K-x Portrait photography advice
66
manual focus
MP count decent (16 megapixels)
decent sensor size (Four Thirds)
includes face detection focusing
saves RAW files
can't use external flash
63
manual focus
sensor size is nice (APS-C)
features face detect focusing
supports RAW formats
megapixel count low (12MP)
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Street Comparison

Panasonic GX850 as a Street photography camera
Pentax K-x as a Street photography camera
80
screen tilts
decent sensor size (Four Thirds)
saves RAW files
features focus via touch
above average high ISO (25,600)
no image stabilization
67
has image stabilization (Sensor based)
sensor size is nice (APS-C)
supports RAW formats
screen is fixed
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Sports Comparison

Panasonic GX850 Sports photography factors
Pentax K-x Sports photography factors
52
silent shooting (1/16,000 seconds)
MP count decent (16 megapixels)
decent sensor size (Four Thirds)
includes tracking autofocus
maximum shutter speed is a little low (1/500 seconds)
no image stabilization
terrible battery (210 shots)
doesn't have phase detect AF
61
great max shutter speed (1/6,000 seconds)
has image stabilization (Sensor based)
sensor size is nice (APS-C)
better than average battery pack (1,900 CIPA)
comes with phase detect AF
slow continuous shooting (5.0 fps)
megapixel count low (12 megapixels)
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Travel Comparison

Panasonic GX850 as a Travel photography camera
Pentax K-x as a Travel photography camera
79
features focus via touch
MP count decent (16 megapixels)
flash built-in
screen is selfie friendly
terrible battery (210 per charge)
54
better than average battery pack (1,900 CIPA)
has built in flash
missing Timelapse function
megapixel count low (12 megapixels)
display is not selfie friendly
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Landscape Comparison

Panasonic GX850 Landscape photography factors
Pentax K-x Landscape photography factors
71
manual focus
swap lenses (Micro Four Thirds mount)
screen size is decent (3")
MP count decent (16MP)
decent sensor size (Four Thirds)
doesnt have anti-alias filter
above average high ISO (25,600)
saves RAW files
no image stabilization
terrible battery (210 per charge)
61
manual focus
switch lenses (Pentax KAF2 mount)
has image stabilization (Sensor based)
sensor size is nice (APS-C)
supports RAW formats
better than average battery pack (1,900 CIPA)
tiny screen (2.7")
megapixel count low (12MP)
missing Timelapse function
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Vlogging Comparison

Panasonic GX850 Vlogging features
Pentax K-x Vlogging features
73
screen is selfie friendly
touchscreen functionality
includes face detection focusing
great video quality (3840 x 2160 pixels)
no image stabilization
doesn't have external mic socket
27
has image stabilization (Sensor based)
features face detect focusing
display is not selfie friendly
low res video (1280 x 720 pixels)
missing microphone jack
Photography Glossary

Panasonic GX850 vs Pentax K-x Specifications

Detailed spec comparison table for Panasonic GX850 and Pentax K-x
 Panasonic Lumix DMC-GX850Pentax K-x
General Information
Make Panasonic Pentax
Model type Panasonic Lumix DMC-GX850 Pentax K-x
Other name Lumix DMC-GX800 / Lumix DMC-GF9 -
Class Entry-Level Mirrorless Entry-Level DSLR
Announced 2017-01-04 2009-12-23
Body design Rangefinder-style mirrorless Compact SLR
Sensor Information
Processor Venus Engine Prime
Sensor type CMOS CMOS
Sensor size Four Thirds APS-C
Sensor measurements 17.3 x 13mm 23.6 x 15.8mm
Sensor surface area 224.9mm² 372.9mm²
Sensor resolution 16 megapixels 12 megapixels
Anti alias filter
Aspect ratio 1:1, 4:3, 3:2 and 16:9 3:2
Max resolution 4592 x 3448 4288 x 2848
Max native ISO 25600 6400
Max enhanced ISO - 12800
Min native ISO 200 100
RAW files
Min enhanced ISO 100 -
Autofocusing
Manual focusing
AF touch
Continuous AF
Single AF
Tracking AF
AF selectice
Center weighted AF
AF multi area
Live view AF
Face detect AF
Contract detect AF
Phase detect AF
Total focus points 49 11
Lens
Lens mount type Micro Four Thirds Pentax KAF2
Available lenses 107 151
Crop factor 2.1 1.5
Screen
Display type Tilting Fixed Type
Display size 3 inches 2.7 inches
Display resolution 1,040 thousand dot 230 thousand dot
Selfie friendly
Liveview
Touch friendly
Display tech - TFT LCD monitor
Viewfinder Information
Viewfinder type None Optical (pentamirror)
Viewfinder coverage - 96%
Viewfinder magnification - 0.57x
Features
Min shutter speed 60 seconds 30 seconds
Max shutter speed 1/500 seconds 1/6000 seconds
Max quiet shutter speed 1/16000 seconds -
Continuous shutter speed 10.0 frames/s 5.0 frames/s
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Change WB
Image stabilization
Integrated flash
Flash distance 4.00 m (at ISO 100) 16.00 m
Flash options Auto, auto w/redeye reduction, on, on w/redeye reduction, slow sync, slow sync w/redeye reduction Auto, On, Off, Red-Eye, Slow Sync, Rear curtain, Wireless
Hot shoe
AEB
White balance bracketing
Max flash sync - 1/180 seconds
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Supported video resolutions 3840 x 2160 @ 30p / 100 Mbps, MP4, H.264, AAC3840 x 2160 @ 24p / 100 Mbps, MP4, H.264, AAC1920 x 1080 @ 60p / 28 Mbps, MP4, H.264, AAC1920 x 1080 @ 60p / 28 Mbps, AVCHD, MTS, H.264, Dolby Digital1920 x 1080 @ 60i / 17 Mbps, AVCHD, MTS, H.264, Dolby Digital1920 x 1080 @ 30p / 20 Mbps, MP4, H.264 1280 x 720 (24 fps), 640 x 416 (24 fps)
Max video resolution 3840x2160 1280x720
Video format MPEG-4, AVCHD Motion JPEG
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 269 grams (0.59 lb) 580 grams (1.28 lb)
Dimensions 107 x 65 x 33mm (4.2" x 2.6" x 1.3") 123 x 92 x 68mm (4.8" x 3.6" x 2.7")
DXO scores
DXO Overall rating 73 72
DXO Color Depth rating 23.2 22.8
DXO Dynamic range rating 13.3 12.5
DXO Low light rating 586 811
Other
Battery life 210 pictures 1900 pictures
Form of battery Battery Pack Battery Pack
Battery ID - 4 x AA
Self timer Yes (2, 10 sec, 3 images/10 sec) Yes (2 or 12 sec)
Time lapse shooting
Storage media microSD/SDHC/SDXC SD/SDHC card
Storage slots Single Single
Pricing at release $548 $600