Side by side comparison and review of Canon EOS R5 and Pentax K-3 Mark III. Compare design, sensors, zoom functions, batteries and other key specifications and features to simplify the choice of your perfect digital camera. Our goal is to make it easier for you to decide on the camera that will best meet your expectations by revealing the main differences between the products.
| DESIGN AND DIMENSIONS | Canon EOS R5 | Pentax K-3 Mark III |
|---|
| Product Type | Digital camera - 8K - 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 | 13.58 cm | 13.45 cm |
| Depth | 8.8 cm | 7.35 cm |
| Weight | 650 g | 735 g |
| Weight Details | Camera body only: 650 g Camera with battery and memory card: 738 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 | Silver |
| Protection | Dust-resistant, water-resistant | Weatherproof, dust-resistant |
| Navigation | - | GPS receiver |
| SENSOR | Canon EOS R5 | Pentax K-3 Mark III |
|---|
| Sensor Resolution | 45 Megapixel | 25.73 Megapixel |
|---|---|---|
| Optical Sensor Type | CMOS | CMOS |
| Total Pixels | 47,100,000 pixels | 26,780,000 pixels |
| Effective Sensor Resolution | 45,000,000 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) | 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 (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 R5 | Pentax K-3 Mark III |
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| Image Processor | DIGIC X | - |
|---|
| LENS | Canon EOS R5 | Pentax K-3 Mark III |
|---|
| Lens Mounting Type | Canon RF | Pentax K |
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| FOCUSING | Canon EOS R5 | Pentax K-3 Mark III |
|---|
| Auto Focus | Dual Pixel CMOS AF II | TTL contrast and phase detection |
|---|---|---|
| Auto Focus Points (Zones) Qty | 5940 | 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 R5 | 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 | 5,760,000 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 R5 | Pentax K-3 Mark III |
|---|
| ISO (Max) | 102400 | 1600000 |
|---|---|---|
| Native ISO | 100-51200 | - |
| Extended ISO (Max) | 102400 | - |
| Extended ISO (Min) | 50 | - |
| Light Sensitivity | ISO 50, ISO 102400, ISO 100-51200, ISO auto (100-51200) | 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 R5 | 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 R5 | Pentax K-3 Mark III |
|---|
| Digital Video Format | H.265 | H.264, MOV |
|---|---|---|
| Image Recording Format | JPEG, RAW, RAW + JPEG, C-RAW, HEIF, RAW + HEIF | JPEG, DNG (RAW), PEF (RAW) |
| Max Video Resolution | 8192 x 4320 | 3840 x 2160 |
| Audio Signal Format | Linear PCM | - |
| Microphone Operation Mode | Mono | Stereo |
| Microphone Features | - | Wind noise reduction, sensitivity control |
| MEMORY | Canon EOS R5 | Pentax K-3 Mark III |
|---|
| Memory Card Slot | SD card, CFexpress | 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, CFexpress | 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 | 8192 x 5464 5808 x 3872 4176 x 2784 2400 x 1600 5088 x 3392 7280 x 5464 5152 x 3872 3712 x 2784 2112 x 1600 8192 x 4608 5808 x 3264 4176 x 2344 2400 x 1344 5456 x 5456 3872 x 3872 2784 x 2784 1600 x 1600 3648 x 3648 2432 x 2432 1824 x 1824 |
RAW 6192 x 4128 JPEG 6192 x 4128 JPEG 4752 x 3168 JPEG 3648 x 2432 JPEG 1920 x 1280 |
| Video Capture | H.265 - 8192 x 4320 p - 29.97 fps H.265 - 8192 x 4320 p - 25 fps H.265 - 8192 x 4320 p - 23.98 fps H.265 - 7680 x 4320 p - 29.97 fps H.265 - 7680 x 4320 p - 25 fps H.265 - 7680 x 4320 p - 23.98 fps H.265 - 4096 x 2160 p - 119.9 fps H.265 - 4096 x 2160 p - 100 fps H.265 - 4096 x 2160 p - 59.94 fps H.265 - 4096 x 2160 p - 50 fps H.265 - 4096 x 2160 p - 29.97 fps H.265 - 4096 x 2160 p - 25 fps H.265 - 4096 x 2160 p - 23.98 fps H.265 - 3840 x 2160 p - 119.9 fps H.265 - 3840 x 2160 p - 100 fps H.265 - 3840 x 2160 p - 59.94 fps H.265 - 3840 x 2160 p - 50 fps H.265 - 3840 x 2160 p - 29.97 fps H.265 - 3840 x 2160 p - 25 fps H.265 - 3840 x 2160 p - 23.98 fps H.265 - 1920 x 1080 p - 59.94 fps H.265 - 1920 x 1080 p - 50 fps H.265 - 1920 x 1080 p - 29.97 fps H.265 - 1920 x 1080 p - 25 fps H.265 - 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 R5 | 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 - 320 shots (EVF on) Photo shooting - 490 shots (LCD Monitor on) |
Photo shooting - 800 shots Playback - 250 minutes |
| CONNECTIONS | Canon EOS R5 | Pentax K-3 Mark III |
|---|
| Interface | HDMI, USB 3.1, IEEE 802.11a/b/g/n/ac, 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) 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 R5 | 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, 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, Dual Pixel RAW, 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 R5 | Pentax K-3 Mark III |
|---|
| Included Accessories | Battery charger, body cap, neck strap, cable protector, USB-C cable | 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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