In depth comparison and review of Pentax K-1 and Sony Alpha7s III ILCE-7SM3. 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-1 | Sony Alpha7s III ILCE-7SM3 |
|---|
| Product Type | Digital camera - 1080p - SLR with Live View mode, movie recording | Digital camera - 4K - mirrorless system |
|---|---|---|
| Lens Included | Body only | Body only |
| Height | 11 cm | 9.69 cm |
| Width | 13.65 cm | 12.89 cm |
| Depth | 8.55 cm | 8.08 cm |
| Weight | 925 g | 699 g |
| Weight Details | - | Camera with battery and memory card: 699 g |
| Body Material | - | Magnesium alloy |
| Protection | Weatherproof, freezeproof, dust-resistant | Dust-resistant, moisture-resistant |
| Digital Zoom | - | 4x |
| Navigation | GPS receiver | - |
| SENSOR | Pentax K-1 | Sony Alpha7s III ILCE-7SM3 |
|---|
| Sensor Resolution | 36.4 Megapixel | 12.1 Megapixel |
|---|---|---|
| Optical Sensor Type | CMOS | Exmor R CMOS |
| Total Pixels | 36,770,000 pixels | 12,900,000 pixels |
| Effective Sensor Resolution | 36,400,000 pixels | 12,100,000 pixels |
| Optical Sensor Size | Full Frame (35.9 x 24.0 mm) | Full Frame (35.6 x 23.8 mm) |
| Frame Rate (Max Resolution) | 30 fps | 120 fps |
| Sensor Dust Reduction | - | Yes |
| Sensor Features | - | Dust Reduction (image sensor vibration), Anti-Dust coating |
| Image Stabiliser | Optical (5-axis image sensor shift mechanism) | Optical (5-axis Steady Shot) |
| Built-in Optical Image Stabiliser | Yes | Yes |
| Sensors | Magnetometer, digital level metre | Digital level metre |
| PROCESSOR | Pentax K-1 | Sony Alpha7s III ILCE-7SM3 |
|---|
| Image Processor | PRIME IV | BIONZ XR |
|---|
| LENS | Pentax K-1 | Sony Alpha7s III ILCE-7SM3 |
|---|
| Lens Mounting Type | Pentax KAF2 | Sony E-mount |
|---|
| FOCUSING | Pentax K-1 | Sony Alpha7s III ILCE-7SM3 |
|---|
| Auto Focus | TTL contrast and phase detection | TTL contrast and phase detection |
|---|---|---|
| Auto Focus Points (Zones) Qty | 33 | 759 |
| Auto Focus Features | - | Focus Peaking function, Predictive Focus Control |
| AE/AF Control | - | Flex Focus Point, Face-priority AF, Subject-tracking AF, Eye detection AF |
| Face Detection | - | Face Recognition, face-priority AF function |
| VIEWFINDER | Pentax K-1 | Sony Alpha7s III ILCE-7SM3 |
|---|
| Viewfinder Type | Optical - fixed eye-level pentaprism | Built-in - electronic |
|---|---|---|
| Viewfinder Colour Support | - | Colour |
| Viewfinder Diagonal Size | - | 0.64" |
| Viewfinder Resolution | - | 9,437,184 pixels |
| Optical Viewfinder Field Coverage | 100% | 100% |
| Optical Viewfinder Magnification | 0.70x | 0.9x |
| Optical Viewfinder Dioptric Correction Range | -3 to +1.2 | -4 to +3 |
| EXPOSURE & WHITE BALANCE | Pentax K-1 | Sony Alpha7s III ILCE-7SM3 |
|---|
| ISO (Max) | 204800 | 409600 |
|---|---|---|
| Native ISO | 100-204800 | - |
| Extended ISO (Max) | - | 409600 |
| Extended ISO (Min) | - | 40 |
| Light Sensitivity | ISO auto, ISO 100-204800 | ISO 204800, ISO 409600, ISO 80-102400, ISO 40 |
| Exposure Metering | Multi-segment, centre-weighted, spot | Multi-segment, centre-weighted, spot |
| Exposure Metering Zones | - | 1200 |
| Exposure Modes | Programme, bulb, automatic, manual, aperture-priority, shutter-priority, ISO priority, shutter & aperture priority | Bulb, automatic, manual, aperture-priority, shutter-priority |
| Bracketing Modes | - | Dynamic Range Bracketing |
| White Balance | Custom, automatic, presets | Custom, automatic, presets |
| White Balance Presets | Cloudy, tungsten light, Flash, daylight, shade, fluorescent light (cool white), fluorescent light (daylight), fluorescent light (warm white), Color Temperature Enhancement (CTE), fluorescent light (daylight white), ASTRO TRACER | Incandescent, fluorescent, cloudy, Flash, daylight, shade, Underwater, 2500K - 9900K |
| Shutter Type | Mechanical electronically-controlled | Mechanical electronically-controlled |
| 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 | ±5 EV range, in 1/2 or 1/3 EV steps |
| Auto Exposure Bracketing | - | 3, 5 or 9 steps |
| X-sync Speed | 1/200sec | 1/250sec |
| Exposure Range | EV -3-20 (ISO 100) | EV -3-20 (ISO 100) |
| DISPLAY | Pentax K-1 | Sony Alpha7s III ILCE-7SM3 |
|---|
| Type | 3.2" LCD display | 3" LCD display |
|---|---|---|
| Touch Screen | - | Yes |
| Display Format | 1,037,000 pixels | 1,440,000 pixels |
| Display Form Factor | Folding | Folding |
| Display Features | Colour control, display brightness control, display saturation control | Display brightness control |
| VIDEOGRAPHY / CAMCORDER | Pentax K-1 | Sony Alpha7s III ILCE-7SM3 |
|---|
| Digital Video Format | AVI, MJPEG, H.264 | H.264, XAVC S, H.265, XAVC HS |
|---|---|---|
| Image Recording Format | JPEG, RAW + JPEG, DNG (RAW), PEF (RAW) | JPEG, RAW, RAW + JPEG |
| Max Video Resolution | 1920 x 1080 | 3840 x 2160 |
| Audio Signal Format | - | AAC |
| Microphone Operation Mode | Stereo | Stereo |
| MEMORY | Pentax K-1 | Sony Alpha7s III ILCE-7SM3 |
|---|
| Memory Card Slot | Dual SD card | Dual SD card, dual CFexpress |
|---|---|---|
| Supported Memory Cards | SD Memory Card, SDXC Memory Card, SDHC Memory Card, SDHC UHS-I Memory Card, SDXC UHS-I 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, CFexpress |
| Memory Card Included | No | No |
| Image Storage | RAW 7360 x 4912 JPEG 7360 x 4912 JPEG 5760 x 3840 JPEG 4224 x 2816 JPEG 1920 x 1280 RAW 4800 x 3200 JPEG 4800 x 3200 |
JPEG 4240 x 2832 JPEG 2768 x 1848 JPEG 2128 x 1416 JPEG 1376 x 920 JPEG 3776 x 2832 JPEG 2464 x 1848 JPEG 1888 x 1416 JPEG 1232 x 920 JPEG 4240 x 2348 JPEG 2768 x 1550 JPEG 2128 x 1200 JPEG 1376 x 776 JPEG 2832 x 2832 JPEG 1840 x 1840 JPEG 1408 x 1408 JPEG 912 x 912 |
| Video Capture | 1920 x 1080 1280 x 720 |
XAVC HS - 3840 x 2160 p - 120 fps XAVC HS - 3840 x 2160 p - 60 fps XAVC HS - 3840 x 2160 p - 100 fps - 200Mbps XAVC HS - 3840 x 2160 p - 50 fps XAVC HS - 3840 x 2160 p - 24 fps XAVC S - 3840 x 2160 p - 120 fps XAVC S - 3840 x 2160 p - 60 fps XAVC S - 3840 x 2160 p - 30 fps XAVC S - 3840 x 2160 p - 24 fps XAVC S - 3840 x 2160 p - 100 fps XAVC S - 3840 x 2160 p - 50 fps XAVC S - 3840 x 2160 p - 25 fps XAVC S HD - 1920 x 1080 p - 120 fps XAVC S HD - 1920 x 1080 p - 60 fps XAVC S HD - 1920 x 1080 p - 30 fps XAVC S HD - 1920 x 1080 p - 24 fps XAVC S HD - 1920 x 1080 p - 100 fps XAVC S HD - 1920 x 1080 p - 50 fps XAVC S HD - 1920 x 1080 p - 25 fps |
| BATTERY AND CHARGING | Pentax K-1 | Sony Alpha7s III ILCE-7SM3 |
|---|
| Battery Type | Pentax D-Li90 Lithium Ion | Sony NP-FZ100 Lithium Ion |
|---|---|---|
| Details | Pentax D-Li90 Li-ion rechargeable battery (included) | Sony NP-FZ100 Li-ion rechargeable battery - 2280 mAh (included) |
| Battery Life | Photo shooting - 760 shots Playback - 6.5 hours |
Photo shooting - 510 shots (EVF on) Photo shooting - 600 shots (LCD Monitor on) Video recording - 80 minutes (EVF on) Video recording - 135 minutes (LCD Monitor on) |
| CONNECTIONS | Pentax K-1 | Sony Alpha7s III ILCE-7SM3 |
|---|
| Interface | HDMI, USB 2.0, IEEE 802.11b/g/n | HDMI, USB-C, Wireless LAN, NFC (Near Field Communication), Bluetooth 5.0 |
|---|---|---|
| Connectivity Features | - | Remote control via mobile devices, Wireless Image Transfer, PC Remote functions via Wi-Fi |
| Print Standard | - | Exif Print support, PRINT Image Matching |
| Computer Connectivity | Mac, Windows | - |
| Flash Terminal | Hot shoe, PC terminal | Hot shoe |
| Connector Type | USB 2.0 (5 pin Micro-USB Type B) HDMI output (19 pin micro HDMI Type D) Microphone (mini-phone stereo 3.5 mm) Headphones (mini-phone stereo 3.5 mm) |
USB (USB Type-C) HDMI output (19 pin HDMI Type A) Microphone (mini-phone stereo 3.5 mm) Headphones (mini-phone stereo 3.5 mm) |
| FEATURES | Pentax K-1 | Sony Alpha7s III ILCE-7SM3 |
|---|
| Self-Timer Delay | 2sec, 12sec | 10 sec, 2sec, 5 sec |
|---|---|---|
| Continuous Shooting Speed | 3 frames per second, 0.7 frames per second, 6.5 frames per second, 4.4 frames per second | 8 frames per second, 3 frames per second, 10 frames per second, 6 frames per second |
| HDR Mode | Auto HDR mode | - |
| Additional Features | Digital image rotation, camera orientation detection, histogram display, AE lock, AF lock, interval shooting mode, peripheral illumination correction, no anti-aliasing filter, Lens Distortion Correction, primary colour filter, Interval Movie Record, Automatic composition correction function, Lateral Chromatic Aberration Correction, anti-aliasing filter simulator, diffraction correction, Pixel Shift Resolution technology, Operation Assist LED lighting | Built-in speaker, digital image rotation, camera orientation detection, histogram display, shadow point display, interval shooting mode, highlight point display, Dynamic Range Optimizer, USB charging, built-in help guide, Chromatic Aberration Compensation (CAC), HDR image enhancement technology, Intelligent AUTO (iAUTO), fast motion recording, Lens Distortion Compensation (LDC), noise reduction over long exposures, high ISO speed noise reduction, silent shooting, BRAVIA Sync function, PhotoTV HD, GPS via mobile, slow motion recording, peripheral shading correction, anti-flicker, Hybrid Log-Gamma (HLG) recording |
| OTHERS | Pentax K-1 | Sony Alpha7s III ILCE-7SM3 |
|---|
| Included Accessories | Eyepiece cover, carrying strap, battery charger, body cap, eyecup, shoe cap, sync terminal cover | - |
|---|---|---|
| Max Operating Temperature | 40 °C | 40 °C |
| Min Operating Temperature | -10 °C | 0 °C |
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