In depth comparison and review of Pentax K-S1 and Canon EOS 1D X 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 | Pentax K-S1 | Canon EOS 1D X Mark III |
|---|
| Product Type | Digital camera - 1080p - SLR with Live View mode, movie recording | Digital camera - 5.5K - SLR with Live View mode, movie recording |
|---|---|---|
| Lens Included | Body only | Body only |
| Height | 9.3 cm | 16.76 cm |
| Width | 12 cm | 15.8 cm |
| Depth | 7 cm | 8.26 cm |
| Weight | 485 g | 1.25 kg |
| Weight Details | - | Camera body only: 1.25 kg Camera with battery and memory card: 1.44 kg |
| Body Material | - | Magnesium alloy |
| Enclosure Colour | White | Black | - |
| Protection | - | Weatherproof, dust-resistant |
| Navigation | - | GPS receiver |
| SENSOR | Pentax K-S1 | Canon EOS 1D X Mark III |
|---|
| Sensor Resolution | 20.12 Megapixel | 20.1 Megapixel |
|---|---|---|
| Optical Sensor Type | CMOS | CMOS |
| Total Pixels | 20,420,000 pixels | 21,400,000 pixels |
| Effective Sensor Resolution | 20,120,000 pixels | 20,100,000 pixels |
| Optical Sensor Size | APS-C (23.5 x 15.6 mm) | Full Frame (36 x 24 mm) |
| Frame Rate (Max Resolution) | - | 60 fps |
| Sensor Dust Reduction | Yes | Yes |
| Sensor Features | Special Protect (SP) coating | Self Cleaning Sensor Unit, High Detail Low Pass Filter |
| PROCESSOR | Pentax K-S1 | Canon EOS 1D X Mark III |
|---|
| Image Processor | PRIME MII | DIGIC X |
|---|
| LENS | Pentax K-S1 | Canon EOS 1D X Mark III |
|---|
| Lens Mounting Type | Pentax KAF2 | Canon EF |
|---|
| FOCUSING | Pentax K-S1 | Canon EOS 1D X Mark III |
|---|
| Auto Focus | TTL phase detection | Dual Pixel CMOS AF |
|---|---|---|
| Auto Focus Points (Zones) Qty | 11 | 191 |
| Auto Focus Features | - | Deep Learning technology |
| AE/AF Control | Face-priority AF, Subject-tracking AF | Face-priority AF, Eye detection AF, Zone AF, AI Servo AF, Head Detection AF, Large Zone AF |
| Face Detection | Yes | - |
| VIEWFINDER | Pentax K-S1 | Canon EOS 1D X Mark III |
|---|
| Viewfinder Type | Optical - fixed eye-level pentaprism | Optical - fixed eye-level pentaprism |
|---|---|---|
| Optical Viewfinder Field Coverage | 100% | 100% |
| Optical Viewfinder Magnification | 0.95x | 0.76x |
| Optical Viewfinder Dioptric Correction Range | -2.5 to +1.5 | -3 to +1 |
| Field of View Crop Factor | - | 1.0 |
| EXPOSURE & WHITE BALANCE | Pentax K-S1 | Canon EOS 1D X Mark III |
|---|
| ISO (Max) | 51200 | 819200 |
|---|---|---|
| Native ISO | 100-51200 | 100-102400 |
| Extended ISO (Max) | - | 204800 (H1), 409600 (H2), 819200 (H3) |
| Extended ISO (Min) | - | 50 |
| Light Sensitivity | ISO 100-51200, ISO auto (100-51200) | ISO 50, ISO auto, ISO 100-102400, ISO 819200 |
| Exposure Metering | Multi-segment, centre-weighted, spot | Evaluative, centre-weighted, spot (1.5%), partial (6.2%) |
| Exposure Metering Zones | 77 | 216 |
| Exposure Modes | Programme, automatic, manual, aperture-priority, shutter-priority, shutter & aperture priority | Programme, bulb, manual, aperture-priority, shutter-priority, E-TTL II program flash |
| Shooting Programs | Landscape, portrait mode, macro, museum, surf & snow, PET, Blue Sky, food, night scene, sunset, candle, night snapshot, night scene with portrait, kids, Stage, night scene HDR, moving object, forest, backlight silhouette | - |
| Special Effects | Natural, bright, Vibrant, monochrome, Muted, landscape, portrait, Cross Process, Bleach Bypass, Radiant, Reversal Film, Tone Expansion, Cold vintage, Colour Fade, Bold Monochrome, Unicolour Bold, Clear Tone, Warm Fade, Brilliant Colour, Infrared Filter | - |
| White Balance | Custom, automatic, presets | Custom, automatic, presets |
| White Balance Presets | Cloudy, tungsten light, Flash, daylight, shade, fluorescent light (cool white), fluorescent light (warm white), Color Temperature Enhancement (CTE), fluorescent light (daylight colour), fluorescent light (daylight white) | Cloudy, tungsten light, Flash, daylight, shade, fluorescent light (white) |
| Shutter Type | Mechanical electronically-controlled | Mechanical electronically-controlled |
| Max Shutter Speed | 1/6000 sec | 1/8000 sec |
| Min Shutter Speed | 30 sec | 30 sec |
| Exposure Compensation | ±5 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 | 1/180 sec | 1/250sec |
| Exposure Range | EV 0-22 (ISO 100) | EV 0-20 (ISO 100) |
| DISPLAY | Pentax K-S1 | Canon EOS 1D X Mark III |
|---|
| Type | 3" LCD display | 3.2" LCD display |
|---|---|---|
| Display Format | 921,000 pixels | 2,100,000 pixels |
| Display Form Factor | Built-in | Built-in |
| Display Features | Colour control, display brightness control | Display brightness control |
| FLASH | Pentax K-S1 | Canon EOS 1D X Mark III |
|---|
| Camera Flash | Pop-up flash | - |
|---|---|---|
| Guide Number (m / ISO 100) | 10 | - |
| Flash Modes | Fill-in mode, rear curtain sync, slow synchro, auto mode, flash OFF mode, red-eye reduction | - |
| Red-Eye Reduction | Yes | - |
| Features | AF illuminator, flash +/- compensation | - |
| VIDEOGRAPHY / CAMCORDER | Pentax K-S1 | Canon EOS 1D X Mark III |
|---|
| Digital Video Format | H.264 | H.264, RAW, H.265 |
|---|---|---|
| Image Recording Format | JPEG, DNG (RAW) + JPEG, DNG (RAW) | JPEG, RAW, RAW + JPEG, C-RAW, HEIF |
| Max Video Resolution | 1920 x 1080 | 5472 x 2886 |
| Microphone Operation Mode | Mono | Mono |
| Microphone Features | Sensitivity control | - |
| MEMORY | Pentax K-S1 | Canon EOS 1D X Mark III |
|---|
| Memory Card Slot | SD card | Dual CFexpress |
|---|---|---|
| Supported Memory Cards | SD Memory Card, SDXC Memory Card, SDHC Memory Card, SDXC UHS-I Memory Card | CFexpress |
| Memory Card | - | 64 GB CFexpress |
| Memory Card Included | - | Yes |
| Image Storage | - | 5472 x 3648 4368 x 2912 3648 x 2432 2736 x 1824 |
| Video Capture | H.264 - 1920 x 1080 - 30 fps H.264 - 1920 x 1080 - 25 fps H.264 - 1920 x 1080 - 24 fps |
RAW - 5472 x 2286 4096 x 2160 3840 x 2160 1920 x 1080 |
| BATTERY AND CHARGING | Pentax K-S1 | Canon EOS 1D X Mark III |
|---|
| Battery Type | Pentax D-Li109 Lithium Ion | Canon LP-E19 Lithium Ion |
|---|---|---|
| Details | Pentax D-Li109 Li-ion rechargeable battery (included) | Canon LP-E19 Li-ion rechargeable battery (included) |
| Battery Life | Photo shooting - 480 shots (50% flash usage) Playback - 4.5 hours |
Photo shooting - 2850 shots (at 23 °C (LCD Monitor off)) Photo shooting - 2360 shots (at 0 °C (LCD Monitor off)) Photo shooting - 610 shots (at 23 °C (Live View mode)) Photo shooting - 530 shots (at 0 °C (Live View mode)) |
| CONNECTIONS | Pentax K-S1 | Canon EOS 1D X Mark III |
|---|
| Interface | HDMI | USB 3.1, Wireless LAN, Bluetooth |
|---|---|---|
| Print Standard | DPOF support, Exif Print support | DPOF support, Exif Print support |
| Flash Terminal | Hot shoe | Hot shoe, PC terminal |
| Connector Type | USB 2.0 HDMI output (19 pin micro HDMI Type D) |
USB 3.1 Gen 2 (USB Type-C) Microphone (mini-phone stereo 3.5 mm) |
| FEATURES | Pentax K-S1 | Canon EOS 1D X Mark III |
|---|
| Self-Timer Delay | 2sec, 12sec | 10 sec, 2sec |
|---|---|---|
| Continuous Shooting Speed | 3 frames per second, 5.4 frames per second | 8 frames per second, 3 frames per second, 20 frames per second, 10 frames per second, 16 frames per second |
| HDR Mode | Auto HDR mode | - |
| Additional Features | RGB primary colour filter, depth-of-field preview button, digital image rotation, camera orientation detection, histogram display, AE lock, AF lock, cropping an image, resizing an image, saturation control, in-camera film editing, in-camera RAW processing, HDR image enhancement technology, hue control, Eye-Fi Card Ready, LED body illumination | Audio recording, RGB primary colour filter, auto power save, depth-of-field preview button, histogram display, AE lock, AF lock, FE lock, highlight point display, Dust Delete Data system, in-camera RAW processing |
| OTHERS | Pentax K-S1 | Canon EOS 1D X Mark III |
|---|
| Included Accessories | Battery charger, body cap, shoulder strap, eyecup, shoe cap | Body cap, neck strap, eyecup, interface cable, cable protector, dual battery charger |
|---|---|---|
| Software | Drivers & Utilities | - |
| Max Operating Temperature | 40 °C | 45 °C |
| Min Operating Temperature | -10 °C | 0 °C |
| Service & Support | - | Limited warranty - 2 years |
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