Panasonic Lumix G DMC-GX8 vs. Pentax K-3 Mark III

Camera Comparison, Reviews and Tests

Detailed comparison and review of Panasonic Lumix G DMC-GX8 and Pentax K-3 Mark III. With our comprehensive overview, you can simply compare design, sensors, proximity characteristics, memory capacities, but also other key features of both cameras and easily decide which one is the right choice for you. Our goal is to help you identify the main differences between products and find the camera that best fits your needs and expectations.

Camera Specifications Comparison

Panasonic Lumix G DMC-GX8 vs. Pentax K-3 Mark III Comparison Chart
DESIGN AND DIMENSIONS Panasonic Lumix G DMC-GX8 Pentax K-3 Mark III
Product Type Digital camera - 4K - mirrorless system Digital camera - 4K - SLR with Live View mode, movie recording
Lens Included Body only Body only
Height 7.79 cm 10.35 cm
Width 13.32 cm 13.45 cm
Depth 6.31 cm 7.35 cm
Weight 435 g 735 g
Weight Details - Camera body only: 735 g
Camera with battery and memory card: 820 g
Body Material - Magnesium alloy
Enclosure Colour Silver | Black Black | Silver
Protection Splashproof Weatherproof, dust-resistant
Digital Zoom 4x -
Navigation - GPS receiver
SENSOR Panasonic Lumix G DMC-GX8 Pentax K-3 Mark III
Sensor Resolution 20.3 Megapixel 25.73 Megapixel
Optical Sensor Type Live MOS CMOS
Total Pixels 21,770,000 pixels 26,780,000 pixels
Effective Sensor Resolution 20,300,000 pixels 25,730,000 pixels
Optical Sensor Size Four Thirds (17.3 x 13.0 mm) APS-C (23.3 x 15.5 mm)
Frame Rate (Max Resolution) 25 fps 30 fps
Sensor Dust Reduction Yes -
Sensor Features Supersonic Wave Filter (SWF) Dust Reduction (image sensor vibration), anti-aliasing simulator function
Image Stabiliser Optical (image sensor shift mechanism) Optical SR II (5-axis image sensor shift mechanism)
Built-in Optical Image Stabiliser Yes Yes
Sensors Digital level metre Digital level metre
LENS Panasonic Lumix G DMC-GX8 Pentax K-3 Mark III
Lens Mounting Type Micro Four Thirds Pentax K
FOCUSING Panasonic Lumix G DMC-GX8 Pentax K-3 Mark III
Auto Focus TTL contrast detection TTL contrast and phase detection
Auto Focus Points (Zones) Qty 49 101
Auto Focus Features Focus Peaking function -
AE/AF Control Face-priority AF, Subject-tracking AF, Touch Area AF Auto-area AF, Zone AF, Expanded area AF
Face Detection Yes Yes
VIEWFINDER Panasonic Lumix G DMC-GX8 Pentax K-3 Mark III
Viewfinder Type Electronic - OLED Optical - fixed eye-level pentaprism
Viewfinder Colour Support Colour -
Viewfinder Resolution 2,360,000 pixels -
Optical Viewfinder Field Coverage 100% 100%
Optical Viewfinder Magnification 1.54x 1.05x
Optical Viewfinder Dioptric Correction Range -4 to +3 -4 to +1
Field of View Crop Factor 2 -
Features Auto eye sensor Auto eye sensor
EXPOSURE & WHITE BALANCE Panasonic Lumix G DMC-GX8 Pentax K-3 Mark III
ISO (Max) 25600 1600000
Light Sensitivity ISO 100, ISO 800, ISO 400, ISO 200, ISO 1600, ISO 6400, ISO 3200, ISO auto, ISO 12800, ISO 25600 ISO auto, ISO 100-1600000
Exposure Metering Multi-segment, centre-weighted, spot Multi-segment, centre-weighted, spot, highlight-weighted
Exposure Metering Zones 1728 -
Exposure Modes Programme, bulb, automatic, manual, aperture-priority, shutter-priority Programme, bulb, automatic, manual, aperture-priority, shutter-priority, ISO priority, shutter & aperture priority
Bracketing Modes - Depth of field bracketing, motion bracketing
Special Effects Sepia, Vivid, natural, monochrome, landscape, portrait, Cross Process, Retro, Expressive, high dynamic, Bleach Bypass, Selective Colour, High Key, Low Key, Toy effect, Star Filter, Impressive Art, One Point Colour, Dynamic Monochrome, Sunshine, Old Days, Toy Pop, Rough Monochrome, Silky Monochrome Soft, Slim, fisheye, natural, bright, Vibrant, monochrome, Muted, Flat, landscape, portrait, miniature, Cross Process, Retro, Colour Extract, Toy camera, High contrast, Colour Invert, Bleach Bypass, Radiant, Reversal Film, Shading, Tone Expansion, Bold Monochrome, Unicolour Bold, Colour replace, Grainy Monochrome
White Balance Custom, automatic, presets Custom, automatic, presets
White Balance Presets Cloudy, tungsten light, Flash, daylight, shade, 2500K - 10000K (100K steps) Cloudy, tungsten light, daylight, shade, fluorescent light (cool white), fluorescent light (daylight), fluorescent light (warm white), Color Temperature Enhancement (CTE), fluorescent light (daylight white)
Shutter Type - Electronic, mechanical electronically-controlled
Max Shutter Speed 1/8000 sec 1/8000 sec
Min Shutter Speed 60 sec 30 sec
Exposure Compensation ±5 EV range, in 1/3 EV steps ±5 EV range, in 1/2 or 1/3 EV steps
Auto Exposure Bracketing 7 steps in 1/3, 2/3 or 1 EV steps -
White Balance Bracketing Yes -
X-sync Speed 1/125sec 1/200sec
Exposure Range EV 0-18 (ISO 100) EV -3-20 (ISO 100)
Retouch Clear Retouch function -
DISPLAY Panasonic Lumix G DMC-GX8 Pentax K-3 Mark III
Type 3" OLED display 3.2" LCD display
Touch Screen Yes Yes
Display Format 1,040,000 pixels 1,620,000 pixels
Display Form Factor Folding Built-in
Display Features Display brightness control, display colour control, display contrast control, Touch AE, Touch AF Colour control, contrast control, display brightness control, night vision LCD display
FLASH Panasonic Lumix G DMC-GX8 Pentax K-3 Mark III
Camera Flash Pop-up flash -
Flash Modes Fill-in mode, slow synchro, auto mode, flash OFF mode, red-eye reduction -
Red-Eye Reduction Yes -
Features AF illuminator -
VIDEOGRAPHY / CAMCORDER Panasonic Lumix G DMC-GX8 Pentax K-3 Mark III
Digital Video Format AVCHD, H.264 H.264, MOV
Image Recording Format JPEG, RAW, RAW + JPEG, MPO, MPO + JPEG JPEG, DNG (RAW), PEF (RAW)
Max Video Resolution 3840 x 2160 3840 x 2160
Surround Sound Dolby Digital AC-3 (2 channel) recording -
Microphone Operation Mode Stereo Stereo
Microphone Features Wind noise reduction Wind noise reduction, sensitivity control
MEMORY Panasonic Lumix G DMC-GX8 Pentax K-3 Mark III
Memory Card Slot SD card Dual SD card
Supported Memory Cards SD Memory Card, SDXC Memory Card, SDHC Memory Card, SDHC UHS-I Memory Card, SDXC UHS-I Memory Card SD Memory Card, SDXC Memory Card, SDHC Memory Card, SDHC UHS-I Memory Card, SDXC UHS-I Memory Card, SDHC UHS-II Memory Card, SDXC UHS-II Memory Card
Memory Card Included No No
Image Storage 5184 x 3888
3712 x 2784
2624 x 1968
MPO 1824 x 1368 - 3D mode
5184 x 3456
3712 x 2480
2624 x 1752
MPO 1824 x 1216 - 3D mode
5184 x 2920
3840 x 2160
1920 x 1080
MPO 1824 x 1024 - 3D mode
3888 x 3888
2784 x 2784
1968 x 1968
MPO 1712 x 1712 - 3D mode
RAW 6192 x 4128
JPEG 6192 x 4128
JPEG 4752 x 3168
JPEG 3648 x 2432
JPEG 1920 x 1280
Video Capture AVCHD - 3840 x 2160 - 25 fps - 100Mbps
AVCHD - 3840 x 2160 - 24 fps - 100Mbps
AVCHD - 1920 x 1080 - 50 fps - 28Mbps
AVCHD - 1920 x 1080 - 25 fps - 20Mbps
AVCHD - 1280 x 720 - 25 fps - 10Mbps
H.264 - 640 x 480 - 25 fps - 4Mbps
H.264 - 3840 x 2160 p - 30 fps
H.264 - 3840 x 2160 p - 24 fps
H.264 - 1920 x 1080 p - 60 fps
H.264 - 1920 x 1080 p - 30 fps
H.264 - 1920 x 1080 p - 24 fps
BATTERY AND CHARGING Panasonic Lumix G DMC-GX8 Pentax K-3 Mark III
Battery Type Lithium Ion - manufacturer-specific Pentax D-Li90 Lithium Ion
Details Li-ion rechargeable battery - 1200 mAh (included) Pentax D-Li90 Li-ion rechargeable battery (included)
Battery Life Photo shooting - 330 shots Photo shooting - 800 shots
Playback - 250 minutes
CONNECTIONS Panasonic Lumix G DMC-GX8 Pentax K-3 Mark III
Interface Composite video/audio, HDMI, USB 2.0, IEEE 802.11b/g/n, NFC (Near Field Communication) HDMI, USB-C, IEEE 802.11b/g/n, Bluetooth 4.2
Connectivity Features Remote control via mobile devices, remote live view Remote control via mobile devices, remote live view, Wireless Image Transfer
Print Standard Direct print, Exif Print support, PictBridge support Exif Print support
Computer Connectivity - Mac, Windows
Flash Terminal Hot shoe Hot shoe, PC terminal
Connector Type USB 2.0
Composite video/audio output
HDMI output (19 pin micro HDMI Type D)
Remote control (sub-mini phone 2.5 mm)
Microphone (sub-mini phone stereo 2.5 mm)
USB 3.2 Gen 1 (USB Type-C)
HDMI output (19 pin micro HDMI Type D)
Microphone (mini-phone stereo 3.5 mm)
Headphones (mini-phone stereo 3.5 mm)
Remote control (sub-mini phone 2.5 mm)
FEATURES Panasonic Lumix G DMC-GX8 Pentax K-3 Mark III
Self-Timer Delay 10 sec, 2sec 2sec, 12sec
Continuous Shooting Speed 2 frames per second, 8 frames per second, 10 frames per second, 6 frames per second, 5.5 frames per second 2.5 frames per second, 12 frames per second, 7 frames per second
HDR Mode - Auto HDR mode
Additional Features Built-in speaker, RGB primary colour filter, digital image rotation, histogram display, cropping an image, resizing an image, in-camera film editing, Intelligent Resolution Technology, Dolby Digital Stereo Creator, Intelligent Auto (iA), Intelligent D-range Control, HDR image enhancement technology, 3D photo shooting, text stamp, Touch Shutter technology, Multi-process Noise Reduction, Time-Lapse recording, Light Speed AF, silent shooting, Creative Panorama function Audio recording, date/time stamp, digital image rotation, camera orientation detection, histogram display, AE lock, AF lock, cropping an image, resizing an image, interval shooting mode, in-camera film editing, in-camera RAW processing, peripheral illumination correction, horizon correction, NR Slow Shutter, High ISO NR, Lens Distortion Correction, primary colour filter, Automatic composition correction function, colour moire correction, Lateral Chromatic Aberration Correction, diffraction correction, Pixel Shift Resolution technology, colour fringe correction, multiple exposure capture, GPS stamp, D-range correction
OTHERS Panasonic Lumix G DMC-GX8 Pentax K-3 Mark III
Included Accessories Battery charger, body cap, shoulder strap, USB cable, power cable, hot shoe cap, housing cover Eyepiece cover, carrying strap, battery charger, body cap, USB cable, eyecup, shoe cap, sync terminal cover
Software Drivers & Utilities, Loilo LoiLoScope (Trial), Panasonic PHOTOfunSTUDIO 9.7 Premium Edition, SILKYPIX Developer Studio 4.3 SE Digital Camera Utility 5
Max Operating Temperature 40 °C 40 °C
Min Operating Temperature 0 °C -10 °C
Service & Support - Limited warranty - 1 year
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