Detailed comparison and review of Pentax K-3 Mark III and Canon EOS R5 C. 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.
| DESIGN AND DIMENSIONS | Pentax K-3 Mark III | Canon EOS R5 C |
|---|
| Product Type | Digital camera - 4K - SLR with Live View mode, movie recording | Digital camera - 8K - mirrorless system |
|---|---|---|
| Lens Included | Body only | Body only |
| Height | 10.35 cm | 10.1 cm |
| Width | 13.45 cm | 14.2 cm |
| Depth | 7.35 cm | 11.1 cm |
| Weight | 735 g | 680 g |
| Weight Details | Camera body only: 735 g Camera with battery and memory card: 820 g |
Camera body only: 680 g Camera with battery and memory card: 770 g |
| Body Material | Magnesium alloy | - |
| Enclosure Colour | Black | Silver | - |
| Protection | Weatherproof, dust-resistant | - |
| Navigation | GPS receiver | - |
| SENSOR | Pentax K-3 Mark III | Canon EOS R5 C |
|---|
| Sensor Resolution | 25.73 Megapixel | 45 Megapixel |
|---|---|---|
| Optical Sensor Type | CMOS | CMOS |
| Total Pixels | 26,780,000 pixels | 47,100,000 pixels |
| Effective Sensor Resolution | 25,730,000 pixels | 45,000,000 pixels |
| Optical Sensor Size | APS-C (23.3 x 15.5 mm) | Full Frame (36 x 24 mm) |
| Frame Rate (Max Resolution) | 30 fps | 60 fps |
| Sensor Dust Reduction | - | Yes |
| Sensor Features | Dust Reduction (image sensor vibration), anti-aliasing simulator function | Self Cleaning Sensor Unit |
| Image Stabiliser | Optical SR II (5-axis image sensor shift mechanism) | Electronic (5-axis) |
| Built-in Optical Image Stabiliser | Yes | - |
| Sensors | Digital level metre | - |
| PROCESSOR | Pentax K-3 Mark III | Canon EOS R5 C |
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| Image Processor | - | DIGIC X |
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| LENS | Pentax K-3 Mark III | Canon EOS R5 C |
|---|
| Lens Mounting Type | Pentax K | Canon RF |
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| FOCUSING | Pentax K-3 Mark III | Canon EOS R5 C |
|---|
| Auto Focus | TTL contrast and phase detection | Dual Pixel CMOS AF II |
|---|---|---|
| Auto Focus Points (Zones) Qty | 101 | 1053 |
| Auto Focus Features | - | Focus Peaking function |
| AE/AF Control | Auto-area AF, Zone AF, Expanded area AF | Face-priority AF, Subject-tracking AF, Zone AF, Head Detection AF, Animal detection AF, Vehicle-tracking AF |
| Face Detection | Yes | Eye Detect AF, face-priority AF function |
| VIEWFINDER | Pentax K-3 Mark III | Canon EOS R5 C |
|---|
| Viewfinder Type | Optical - fixed eye-level pentaprism | Electronic - OLED |
|---|---|---|
| Viewfinder Colour Support | - | Colour |
| Viewfinder Diagonal Size | - | 0.5" |
| Viewfinder Resolution | - | 5,760,000 pixels |
| Optical Viewfinder Field Coverage | 100% | 100% |
| Optical Viewfinder Magnification | 1.05x | 0.76x |
| Optical Viewfinder Dioptric Correction Range | -4 to +1 | -4 to +2 |
| Field of View Crop Factor | - | 1.0 |
| Features | Auto eye sensor | - |
| EXPOSURE & WHITE BALANCE | Pentax K-3 Mark III | Canon EOS R5 C |
|---|
| ISO (Max) | 1600000 | 102400 |
|---|---|---|
| Native ISO | - | 100-51200 |
| Extended ISO (Max) | - | 102400 |
| Extended ISO (Min) | - | 50 |
| Light Sensitivity | ISO auto, ISO 100-1600000 | ISO 50, ISO 102400, ISO 100-51200, ISO auto (100-25600), ISO auto (200-51200) |
| Exposure Metering | Multi-segment, centre-weighted, spot, highlight-weighted | Evaluative, centre-weighted, partial (5.8%), spot (2.9%) |
| Exposure Metering Zones | - | 384 |
| Exposure Modes | Programme, bulb, automatic, manual, aperture-priority, shutter-priority, ISO priority, shutter & aperture priority | Bulb, automatic, manual, aperture-priority, shutter-priority, E-TTL II program flash |
| Bracketing Modes | Depth of field bracketing, motion bracketing | Focus bracketing |
| Special Effects | 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 | Neutral, Faithful, monochrome, landscape, portrait, Standard, Fine Detail |
| White Balance | Custom, automatic, presets | Custom, automatic, presets |
| White Balance Presets | Cloudy, tungsten light, daylight, shade, fluorescent light (cool white), fluorescent light (daylight), fluorescent light (warm white), Color Temperature Enhancement (CTE), fluorescent light (daylight white) | Cloudy, tungsten light, Flash, daylight, shade, 2000K - 15000K (100K steps), fluorescent light (white) |
| Shutter Type | Electronic, mechanical electronically-controlled | Mechanical, electronic |
| Max Shutter Speed | 1/8000 sec | 1/8000 sec |
| Min Shutter Speed | 30 sec | 30 sec |
| Exposure Compensation | ±5 EV range, in 1/2 or 1/3 EV steps | ±3 EV range, in 1/2 or 1/3 EV steps |
| Auto Exposure Bracketing | - | 3 steps in 1/2 or 1/3 EV steps |
| X-sync Speed | 1/200sec | 1/250sec |
| Exposure Range | EV -3-20 (ISO 100) | EV -3-20 (ISO 100) |
| DISPLAY | Pentax K-3 Mark III | Canon EOS R5 C |
|---|
| Type | 3.2" LCD display | 3.15" LCD display |
|---|---|---|
| Touch Screen | Yes | Yes |
| Display Format | 1,620,000 pixels | 2,100,000 pixels |
| Display Form Factor | Built-in | Rotating |
| Display Features | Colour control, contrast control, display brightness control, night vision LCD display | Display brightness control, anti-smudge coating |
| VIDEOGRAPHY / CAMCORDER | Pentax K-3 Mark III | Canon EOS R5 C |
|---|
| Digital Video Format | H.264, MOV | XF-AVC, Cinema RAW Light, MP4 |
|---|---|---|
| Image Recording Format | JPEG, DNG (RAW), PEF (RAW) | JPEG, RAW, RAW + JPEG, C-RAW, HEIF, RAW + HEIF |
| Max Video Resolution | 3840 x 2160 | 8192 x 4320 |
| Audio Signal Format | - | Linear PCM, AAC LC |
| Microphone Operation Mode | Stereo | Mono |
| Microphone Features | Wind noise reduction, sensitivity control | - |
| MEMORY | Pentax K-3 Mark III | Canon EOS R5 C |
|---|
| Memory Card Slot | Dual SD card | SD card, CFexpress |
|---|---|---|
| Supported Memory Cards | 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 | SD Memory Card, SDXC Memory Card, SDHC Memory Card, SDHC UHS-II Memory Card, SDXC UHS-II Memory Card, CFexpress |
| Memory Card Included | No | No |
| Image Storage | RAW 6192 x 4128 JPEG 6192 x 4128 JPEG 4752 x 3168 JPEG 3648 x 2432 JPEG 1920 x 1280 |
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 |
| Video Capture | 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 |
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| BATTERY AND CHARGING | Pentax K-3 Mark III | Canon EOS R5 C |
|---|
| Battery Type | Pentax D-Li90 Lithium Ion | Canon LP-E6NH Lithium Ion |
|---|---|---|
| Details | Pentax D-Li90 Li-ion rechargeable battery (included) | Canon LP-E6NH Li-ion rechargeable battery (included) Canon LP-E6N Li-ion rechargeable battery (optional) Canon LP-E6 Li-ion rechargeable battery (optional) |
| Battery Life | Photo shooting - 800 shots Playback - 250 minutes |
- |
| CONNECTIONS | Pentax K-3 Mark III | Canon EOS R5 C |
|---|
| Interface | HDMI, USB-C, IEEE 802.11b/g/n, Bluetooth 4.2 | HDMI, USB 3.1, IEEE 802.11a/b/g/n/ac, Bluetooth 5.0 |
|---|---|---|
| Connectivity Features | Remote control via mobile devices, remote live view, Wireless Image Transfer | Remote control via mobile devices, remote live view, Wireless Image Transfer, wireless video upload to cloud server, wireless image upload to cloud server |
| Print Standard | Exif Print support | DPOF support, Exif Print support |
| Computer Connectivity | Mac, Windows | - |
| Flash Terminal | Hot shoe, PC terminal | Hot shoe |
| 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 (sub-mini phone 2.5 mm) |
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 Timecode in/out |
| FEATURES | Pentax K-3 Mark III | Canon EOS R5 C |
|---|
| Features | - | SMPTE Colour Bars, zebra pattern, waveform monitor |
|---|---|---|
| Self-Timer Delay | 2sec, 12sec | 10 sec, 2sec |
| Continuous Shooting Speed | 2.5 frames per second, 12 frames per second, 7 frames per second | 8 frames per second, 3 frames per second, 20 frames per second, 12 frames per second, 6 frames per second, 3.9 frames per second, 6.8 frames per second, 9.2 frames per second, 5.1 frames per second, 4.9 frames per second |
| HDR Mode | Auto HDR mode | - |
| Additional Features | 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 | Sharpness control, histogram display, colour control, cropping an image, resizing an image, saturation control, highlight point display, Dust Delete Data system, Pre-Rec function, built-in cooling fan, USB charging, in-camera RAW processing, peripheral illumination correction, HDR image enhancement technology, Bayer mosaic RGB filter, Noise Reduction control, fast motion recording, silent shooting, distortion correction function, simultaneous multi-format recording, Optical Low Pass Filter (OLFP), diffraction correction, slow motion recording, chromatic aberration correction, Hybrid Log-Gamma (HLG) recording, 4:2:2 10-bit internal rercording, tally light, 12-bit RAW, Canon Log 3, Perceptual Quantisation (PQ) recording, Black Gamma control |
| OTHERS | Pentax K-3 Mark III | Canon EOS R5 C |
|---|
| Included Accessories | Eyepiece cover, carrying strap, battery charger, body cap, USB cable, eyecup, shoe cap, sync terminal cover | Battery charger, body cap, shoulder strap, USB cable, cable protector |
|---|---|---|
| Software | Digital Camera Utility 5 | - |
| Max Operating Temperature | 40 °C | 40 °C |
| Min Operating Temperature | -10 °C | 0 °C |
| Service & Support | Limited warranty - 1 year | Limited warranty - 2 years |
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