In depth comparison and review of Canon EOS Ra 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.
| DESIGN AND DIMENSIONS | Canon EOS Ra | 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 | 9.83 cm | 10.35 cm |
| Width | 13.58 cm | 13.45 cm |
| Depth | 8.44 cm | 7.35 cm |
| Weight | 580 g | 735 g |
| Weight Details | Camera body only: 580 g Camera with battery and memory card: 660 g |
Camera body only: 735 g Camera with battery and memory card: 820 g |
| Body Material | Magnesium alloy | Magnesium alloy |
| Enclosure Colour | - | Black | Silver |
| Protection | Waterproof, dust-resistant | Weatherproof, dust-resistant |
| Navigation | - | GPS receiver |
| SENSOR | Canon EOS Ra | Pentax K-3 Mark III |
|---|
| Sensor Resolution | 30.3 Megapixel | 25.73 Megapixel |
|---|---|---|
| Optical Sensor Type | CMOS | CMOS |
| Total Pixels | 31,700,000 pixels | 26,780,000 pixels |
| Effective Sensor Resolution | 30,300,000 pixels | 25,730,000 pixels |
| Optical Sensor Size | Full Frame (36 x 24 mm) | APS-C (23.3 x 15.5 mm) |
| Frame Rate (Max Resolution) | 30 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 SR II (5-axis image sensor shift mechanism) |
| Built-in Optical Image Stabiliser | - | Yes |
| Sensors | - | Digital level metre |
| PROCESSOR | Canon EOS Ra | Pentax K-3 Mark III |
|---|
| Image Processor | DIGIC 8 | - |
|---|
| LENS | Canon EOS Ra | Pentax K-3 Mark III |
|---|
| Lens Mounting Type | Canon RF | Pentax K |
|---|
| FOCUSING | Canon EOS Ra | Pentax K-3 Mark III |
|---|
| Auto Focus | Dual Pixel CMOS AF | TTL contrast and phase detection |
|---|---|---|
| Auto Focus Points (Zones) Qty | 5655 | 101 |
| Auto Focus Features | Focus Peaking function | - |
| AE/AF Control | Face-priority AF, Subject-tracking AF, Eye detection AF, Zone AF, Touch and Drag AF | Auto-area AF, Zone AF, Expanded area AF |
| Face Detection | Face Detection AF/AE | Yes |
| VIEWFINDER | Canon EOS Ra | Pentax K-3 Mark III |
|---|
| Viewfinder Type | Electronic - OLED | Optical - fixed eye-level pentaprism |
|---|---|---|
| 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 |
| Field of View Crop Factor | 1.0 | - |
| Features | Viewfinder brightness control | Auto eye sensor |
| EXPOSURE & WHITE BALANCE | Canon EOS Ra | Pentax K-3 Mark III |
|---|
| ISO (Max) | 102400 | 1600000 |
|---|---|---|
| Native ISO | 100-40000 | - |
| Extended ISO (Max) | 51200 (H1), 102400 (H2) | - |
| Extended ISO (Min) | 50 | - |
| Light Sensitivity | ISO 50, ISO 102400, ISO 51200, ISO 100-40000 | ISO auto, ISO 100-1600000 |
| Exposure Metering | Evaluative, centre-weighted, partial (6.1%), spot (2.7%) | Multi-segment, centre-weighted, spot, highlight-weighted |
| Exposure Metering Zones | 384 | - |
| Exposure Modes | Programme, 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 | - | Depth of field bracketing, motion bracketing |
| Special Effects | Neutral, Custom Effect, 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 | 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 | 1/200sec | 1/200sec |
| Exposure Range | EV -3-20 (ISO 100) | EV -3-20 (ISO 100) |
| DISPLAY | Canon EOS Ra | Pentax K-3 Mark III |
|---|
| Type | 3.15" LCD display | 3.2" LCD display |
|---|---|---|
| Touch Screen | Yes | Yes |
| Display Format | 2,100,000 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 Ra | Pentax K-3 Mark III |
|---|
| Digital Video Format | H.264 | H.264, MOV |
|---|---|---|
| Image Recording Format | JPEG, RAW, RAW + JPEG, C-RAW | JPEG, DNG (RAW), PEF (RAW) |
| Max Video Resolution | 3840 x 2160 | 3840 x 2160 |
| Audio Signal Format | Linear PCM | - |
| Microphone Operation Mode | Stereo | Stereo |
| Microphone Features | - | Wind noise reduction, sensitivity control |
| MEMORY | Canon EOS Ra | 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-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 | RAW 6720 x 4480 RAW 4176 x 2784 RAW 5952 x 4480 RAW 6720 x 4480 RAW 4480 x 4480 JPEG 4464 x 2976 JPEG 3968 x 2976 JPEG 4464 x 2512 JPEG 2976 x 2976 JPEG 3360 x 2240 JPEG 2400 x 1600 JPEG 2976 x 2240 JPEG 3360 x 1888 JPEG 2240 x 2240 JPEG 2400 x 1600 JPEG 2112 x 1600 JPEG 2400 x 1344 JPEG 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 - 29.97 fps H.264 - 3840 x 2160 p - 25 fps H.264 - 3840 x 2160 p - 24 fps H.264 - 3840 x 2160 p - 23.98 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 - 24 fps H.264 - 1920 x 1080 p - 23.98 fps H.264 - 1280 x 720 p - 119.9 fps H.264 - 1280 x 720 p - 100 fps H.264 - 1280 x 720 p - 59.94 fps H.264 - 1280 x 720 p - 50 fps H.264 - 1280 x 720 p - 29.97 fps H.264 - 1280 x 720 p - 25 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 Ra | Pentax K-3 Mark III |
|---|
| Battery Type | Canon LP-E6N Lithium Ion | Pentax D-Li90 Lithium Ion |
|---|---|---|
| Details | Canon LP-E6N Li-ion rechargeable battery (included) | Pentax D-Li90 Li-ion rechargeable battery (included) |
| Battery Life | Photo shooting - 370 shots (at 23 °C (Live View mode)) Photo shooting - 350 shots (at 0 °C (Live View mode)) Photo shooting - 350 shots (at 0 °C (LCD Monitor off)) Photo shooting - 330 shots (at 0 °C (LCD Monitor off)) |
Photo shooting - 800 shots Playback - 250 minutes |
| CONNECTIONS | Canon EOS Ra | Pentax K-3 Mark III |
|---|
| Interface | HDMI, USB 3.1, IEEE 802.11b/g/n, Bluetooth 4.1 | 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 image printing | Remote control via mobile devices, remote live view, Wireless Image Transfer |
| Print Standard | DPOF support, Exif Print support, PictBridge support | Exif Print support |
| Computer Connectivity | Mac, Windows | Mac, Windows |
| Flash Terminal | Hot shoe | Hot shoe, PC terminal |
| Connector Type | USB 3.1 (USB Type-C) HDMI output (19 pin mini HDMI Type C) Audio line-in / 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 Ra | Pentax K-3 Mark III |
|---|
| Self-Timer Delay | 10 sec, 2sec | 2sec, 12sec |
|---|---|---|
| Continuous Shooting Speed | 8 frames per second, 3 frames per second, 5 frames per second, 2.2 frames per second | 2.5 frames per second, 12 frames per second, 7 frames per second |
| HDR Mode | - | Auto HDR mode |
| Additional Features | Auto power save, camera orientation detection, histogram display, AE lock, AF lock, cropping an image, resizing an image, highlight tone priority, Dust Delete Data system, USB charging, Auto Lighting Optimizer, in-camera RAW processing, peripheral illumination correction, Time-Lapse recording, Canon Log Gamma mode, high ISO speed noise reduction, silent shooting, Dual Pixel CMOS AF technology, diffraction correction, Flicker detection, Digital Lens Optimizer, RGB primary colour filter with increased Hα light transmission rate, 30x zoom on LCD in Live View mode | 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 Ra | Pentax K-3 Mark III |
|---|
| Included Accessories | Battery charger, body cap, neck strap, USB cable | Eyepiece cover, carrying strap, battery charger, body cap, USB cable, eyecup, shoe cap, sync terminal cover |
|---|---|---|
| Software | Canon Digital Photo Professional | Digital Camera Utility 5 |
| Max Operating Temperature | 40 °C | 40 °C |
| Min Operating Temperature | 0 °C | -10 °C |
| Service & Support | Limited warranty - 2 years | Limited warranty - 1 year |
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