Canon EOS R6 vs. Pentax K-3 Mark III

Camera Comparison, Reviews and Tests

In depth comparison and review of Canon EOS R6 and Pentax K-3 Mark III. Compare design, sensors, proximity features, memory capacities and other important specifications and features to easily choose the right camera for you. Our goal is to help you uncover differences between the products and find the digital camera that will best fit your needs.

Camera Specifications Comparison

Canon EOS R6 vs. Pentax K-3 Mark III Comparison Chart
DESIGN AND DIMENSIONS Canon EOS R6 Pentax K-3 Mark III
Product Type Digital camera - 4K - mirrorless system with Live View mode, movie recording Digital camera - 4K - SLR with Live View mode, movie recording
Lens Included Body only Body only
Height 9.75 cm 10.35 cm
Width 13.84 cm 13.45 cm
Depth 8.84 cm 7.35 cm
Weight 598 g 735 g
Weight Details Camera body only: 598 g
Camera with battery and memory card: 680 g
Camera body only: 735 g
Camera with battery and memory card: 820 g
Body Material Magnesium alloy, fibreglass-reinforced polycarbonate resin Magnesium alloy
Enclosure Colour Black Black | Silver
Protection Dust-resistant, water-resistant Weatherproof, dust-resistant
Navigation - GPS receiver
SENSOR Canon EOS R6 Pentax K-3 Mark III
Sensor Resolution 20.1 Megapixel 25.73 Megapixel
Optical Sensor Type CMOS CMOS
Total Pixels 21,400,000 pixels 26,780,000 pixels
Effective Sensor Resolution 20,100,000 pixels 25,730,000 pixels
Optical Sensor Size Full Frame (35.9 x 23.9 mm) APS-C (23.3 x 15.5 mm)
Frame Rate (Max Resolution) 60 fps 30 fps
Sensor Dust Reduction Yes -
Sensor Features EOS Integrated Cleaning System Dust Reduction (image sensor vibration), anti-aliasing simulator function
Image Stabiliser Optical (5-axis 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
PROCESSOR Canon EOS R6 Pentax K-3 Mark III
Image Processor DIGIC X -
LENS Canon EOS R6 Pentax K-3 Mark III
Lens Mounting Type Canon RF Pentax K
FOCUSING Canon EOS R6 Pentax K-3 Mark III
Auto Focus Dual Pixel CMOS AF II TTL contrast and phase detection
Auto Focus Points (Zones) Qty 6072 101
Auto Focus Features Focus Peaking function -
AE/AF Control Face-priority AF, Subject-tracking AF, Eye detection AF, Zone AF, Animal-tracking AF Auto-area AF, Zone AF, Expanded area AF
Face Detection Eye Detect AF, Face Detection AF/AE Yes
VIEWFINDER Canon EOS R6 Pentax K-3 Mark III
Viewfinder Type Electronic - OLED Optical - fixed eye-level pentaprism
Viewfinder Colour Support Colour -
Viewfinder Diagonal Size 0.5" -
Viewfinder Resolution 3,690,000 pixels -
Optical Viewfinder Field Coverage 100% 100%
Optical Viewfinder Magnification 0.76x 1.05x
Optical Viewfinder Dioptric Correction Range -4 to +2 -4 to +1
Viewfinder Information Shutter speed, exposure compensation, flash charge completion, aperture, white balance, image stabilizer, exposure bracketing, battery status, high-speed sync indicator, frames-remaining counter, highlight tone priority, ISO sensitivity, AF lock, electronic level, maximum burst, flicker detection, drive mode, metering mode -
Field of View Crop Factor 1.0 -
Features - Auto eye sensor
EXPOSURE & WHITE BALANCE Canon EOS R6 Pentax K-3 Mark III
ISO (Max) 204800 1600000
Native ISO 100-102400 -
Extended ISO (Max) 204800 -
Extended ISO (Min) 50 -
Light Sensitivity ISO 50, ISO 204800, ISO 100-102400 ISO auto, ISO 100-1600000
Exposure Metering Evaluative, centre-weighted, partial (5.8%), spot (2.9%) Multi-segment, centre-weighted, spot, highlight-weighted
Exposure Metering Zones 384 -
Exposure Modes Bulb, automatic, manual, aperture-priority, shutter-priority, E-TTL II program flash Programme, bulb, automatic, manual, aperture-priority, shutter-priority, ISO priority, shutter & aperture priority
Bracketing Modes White balance bracketing Depth of field bracketing, motion bracketing
Special Effects Neutral, Faithful, monochrome, landscape, portrait, Standard, Fine Detail 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, fluorescent light (white) 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 Electronic, mechanical electronically-controlled
Max Shutter Speed 1/8000 sec 1/8000 sec
Min Shutter Speed 30 sec 30 sec
Exposure Compensation ±3 EV range, in 1/2 or 1/3 EV steps ±5 EV range, in 1/2 or 1/3 EV steps
Auto Exposure Bracketing 3 steps in 1/2 or 1/3 EV steps -
White Balance Bracketing Yes -
X-sync Speed 1/250sec 1/200sec
Exposure Range - EV -3-20 (ISO 100)
DISPLAY Canon EOS R6 Pentax K-3 Mark III
Type 3" LCD display 3.2" LCD display
Touch Screen Yes Yes
Display Format 1,620,000 pixels 1,620,000 pixels
Display Form Factor Rotating Built-in
Display Features Display brightness control, display colour control, anti-smudge coating Colour control, contrast control, display brightness control, night vision LCD display
VIDEOGRAPHY / CAMCORDER Canon EOS R6 Pentax K-3 Mark III
Digital Video Format H.264 H.264, MOV
Image Recording Format JPEG, RAW, RAW + JPEG, C-RAW, HEIF, RAW + HEIF JPEG, DNG (RAW), PEF (RAW)
Max Video Resolution 3840 x 2160 3840 x 2160
Microphone Operation Mode Stereo Stereo
Microphone Features - Wind noise reduction, sensitivity control
MEMORY Canon EOS R6 Pentax K-3 Mark III
Memory Card Slot Dual SD card Dual SD card
Supported Memory Cards SD Memory Card, SDXC Memory Card, SDHC Memory Card, SDHC UHS-II Memory Card, SDXC UHS-II 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 5472 x 3648
3648 x 2432
2736 x 1824
2400 x 1600
3408 x 2272
2400 x 1600
7280 x 5464
5152 x 3872
3712 x 2784
2112 x 1600
5472 x 3072
3648 x 2048
2736 x 1536
2400 x 1344
3648 x 3648
2432 x 2432
1824 x 1824
1600 x 1600
RAW 6192 x 4128
JPEG 6192 x 4128
JPEG 4752 x 3168
JPEG 3648 x 2432
JPEG 1920 x 1280
Video Capture H.264 - 3840 x 2160 p - 59.94 fps
H.264 - 3840 x 2160 p - 50 fps
H.264 - 3840 x 2160 p - 29.97 fps
H.264 - 3840 x 2160 p - 25 fps
H.264 - 3840 x 2160 p - 23.98 fps
H.264 - 1920 x 1080 p - 119.88 fps
H.264 - 1920 x 1080 p - 100 fps
H.264 - 1920 x 1080 p - 59.94 fps
H.264 - 1920 x 1080 p - 50 fps
H.264 - 1920 x 1080 p - 29.97 fps
H.264 - 1920 x 1080 p - 25 fps
H.264 - 1920 x 1080 p - 23.98 fps
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 Canon EOS R6 Pentax K-3 Mark III
Battery Type Canon LP-E6NH Lithium Ion Pentax D-Li90 Lithium Ion
Details Canon LP-E6NH Li-ion rechargeable battery (included) Pentax D-Li90 Li-ion rechargeable battery (included)
Battery Life Photo shooting - 380 shots (Power Save LVF Shooting mode)
Photo shooting - 510 shots (Power Save LCD Shooting mode)
Photo shooting - 800 shots
Playback - 250 minutes
CONNECTIONS Canon EOS R6 Pentax K-3 Mark III
Interface HDMI, USB 3.1, IEEE 802.11a/b/g/n, Bluetooth 4.2 HDMI, USB-C, IEEE 802.11b/g/n, Bluetooth 4.2
Connectivity Features Remote control via mobile devices, remote live view, Wireless Image Transfer, wireless video upload to cloud server, wireless image upload to cloud server, wireless image printing Remote control via mobile devices, remote live view, Wireless Image Transfer
Print Standard DPOF support, Exif Print support Exif Print support
Computer Connectivity Mac, Windows Mac, Windows
Flash Terminal Hot shoe Hot shoe, PC terminal
Connector Type 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
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 Canon EOS R6 Pentax K-3 Mark III
Self-Timer Delay 10 sec, 2sec 2sec, 12sec
Continuous Shooting Speed 20 frames per second, 12 frames per second 2.5 frames per second, 12 frames per second, 7 frames per second
HDR Mode - Auto HDR mode
Additional Features RGB primary colour filter, auto power save, depth-of-field preview button, camera orientation detection, histogram display, cropping an image, resizing an image, highlight tone priority, highlight point display, Dust Delete Data system, USB charging, Auto Lighting Optimizer, in-camera RAW processing, peripheral illumination correction, Chromatic Aberration Compensation (CAC), HDR image enhancement technology, Scene Intelligent Auto technology, Touch Shutter technology, noise reduction over long exposures, high ISO speed noise reduction, silent shooting, distortion correction function, diffraction correction, multiple exposure capture, Digital Lens Optimizer, 4K time-lapse movie recording, anti-flicker, firmware upgradable 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 Canon EOS R6 Pentax K-3 Mark III
Included Accessories Battery charger, body cap, neck strap Eyepiece cover, carrying strap, battery charger, body cap, USB cable, eyecup, shoe cap, sync terminal cover
Software Canon Picture Style Editor, Canon EOS Utility, Canon Digital Photo Professional 4, Canon Digital Photo Professional Express Digital Camera Utility 5
Max Operating Temperature 40 °C 40 °C
Min Operating Temperature 1 °C -10 °C
Service & Support Limited warranty - 1 year Limited warranty - 1 year
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