Side by side comparison and review of Sony Alpha1 ILCE-1 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 | Sony Alpha1 ILCE-1 | Pentax K-3 Mark III |
|---|
| Product Type | Digital camera - 8K - mirrorless system | Digital camera - 4K - SLR with Live View mode, movie recording |
|---|---|---|
| Lens Included | Body only | Body only |
| Height | 9.69 cm | 10.35 cm |
| Width | 12.89 cm | 13.45 cm |
| Depth | 8.08 cm | 7.35 cm |
| Weight | 652 g | 735 g |
| Weight Details | Camera body only: 652 g Camera with battery and memory card: 737 g |
Camera body only: 735 g Camera with battery and memory card: 820 g |
| Body Material | Magnesium alloy | Magnesium alloy |
| Enclosure Colour | Black | Black | Silver |
| Protection | - | Weatherproof, dust-resistant |
| Navigation | - | GPS receiver |
| SENSOR | Sony Alpha1 ILCE-1 | Pentax K-3 Mark III |
|---|
| Sensor Resolution | 50.1 Megapixel | 25.73 Megapixel |
|---|---|---|
| Optical Sensor Type | Exmor RS CMOS | CMOS |
| Total Pixels | 50,500,000 pixels | 26,780,000 pixels |
| Effective Sensor Resolution | 50,100,000 pixels | 25,730,000 pixels |
| Optical Sensor Size | Full Frame (35.9 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 | Dust Reduction (image sensor vibration), Anti-Dust coating, APS-C compatible mode | 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 |
| PROCESSOR | Sony Alpha1 ILCE-1 | Pentax K-3 Mark III |
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| Image Processor | BIONZ XR | - |
|---|
| LENS | Sony Alpha1 ILCE-1 | Pentax K-3 Mark III |
|---|
| Lens Mounting Type | Sony E-mount | Pentax K |
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| FOCUSING | Sony Alpha1 ILCE-1 | Pentax K-3 Mark III |
|---|
| Auto Focus | TTL contrast and phase detection | TTL contrast and phase detection |
|---|---|---|
| Auto Focus Points (Zones) Qty | 759 | 101 |
| Auto Focus Features | Focus Peaking function | - |
| AE/AF Control | Subject-tracking AF, Eye detection AF, Predictive AI Servo AF, Zone AF | Auto-area AF, Zone AF, Expanded area AF |
| Face Detection | Eye Detect AF, Pet Detection | Yes |
| VIEWFINDER | Sony Alpha1 ILCE-1 | Pentax K-3 Mark III |
|---|
| Viewfinder Type | Built-in - electronic | Optical - fixed eye-level pentaprism |
|---|---|---|
| Viewfinder Colour Support | Colour | - |
| Viewfinder Diagonal Size | 0.64" | - |
| Viewfinder Resolution | 9,437,184 pixels | - |
| Optical Viewfinder Field Coverage | 100% | 100% |
| Optical Viewfinder Magnification | 0.9x | 1.05x |
| Optical Viewfinder Dioptric Correction Range | -4 to +3 | -4 to +1 |
| Field of View Crop Factor | 1.0 | - |
| Features | - | Auto eye sensor |
| EXPOSURE & WHITE BALANCE | Sony Alpha1 ILCE-1 | Pentax K-3 Mark III |
|---|
| ISO (Max) | 102400 | 1600000 |
|---|---|---|
| Extended ISO (Max) | 102400 | - |
| Extended ISO (Min) | 50 | - |
| Light Sensitivity | ISO 50, ISO auto, ISO 102400, ISO 100-32000 | ISO auto, ISO 100-1600000 |
| Exposure Metering | Multi-segment, centre-weighted, spot, average, highlight-weighted | Multi-segment, centre-weighted, spot, highlight-weighted |
| Exposure Metering Zones | 1200 | - |
| Exposure Modes | Bulb, automatic, manual, aperture-priority, shutter-priority | Programme, bulb, automatic, manual, aperture-priority, shutter-priority, ISO priority, shutter & aperture priority |
| Bracketing Modes | Dynamic Range Bracketing, white balance bracketing | Depth of field bracketing, motion 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 |
| White Balance | Custom, automatic, presets | Custom, automatic, presets |
| White Balance Presets | Incandescent, fluorescent, cloudy, Flash, daylight, shade, Underwater, 2500K - 9900K | 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 | 1/32000 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 |
| X-sync Speed | 1/200sec, 1/500 sec, 1/400 sec, 1/250sec | 1/200sec |
| Exposure Range | EV -3-20 (ISO 100) | EV -3-20 (ISO 100) |
| DISPLAY | Sony Alpha1 ILCE-1 | Pentax K-3 Mark III |
|---|
| Type | 3" LCD display | 3.2" LCD display |
|---|---|---|
| Touch Screen | Yes | Yes |
| Display Format | 1,440,000 pixels | 1,620,000 pixels |
| Display Form Factor | Folding | Built-in |
| Display Features | Display brightness control | Colour control, contrast control, display brightness control, night vision LCD display |
| VIDEOGRAPHY / CAMCORDER | Sony Alpha1 ILCE-1 | Pentax K-3 Mark III |
|---|
| Digital Video Format | H.264, XAVC S, H.265, XAVC HS | H.264, MOV |
|---|---|---|
| Image Recording Format | JPEG, RAW, MPF, HEIF | JPEG, DNG (RAW), PEF (RAW) |
| Max Video Resolution | 7680 x 4320 | 3840 x 2160 |
| Audio Signal Format | Linear PCM, AAC | - |
| Microphone Operation Mode | Stereo | Stereo |
| Microphone Features | - | Wind noise reduction, sensitivity control |
| MEMORY | Sony Alpha1 ILCE-1 | Pentax K-3 Mark III |
|---|
| Memory Card Slot | Dual CFexpress / SD card | Dual SD card |
|---|---|---|
| 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, 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 | 8640 x 5760 5616 x 3744 4320 x 2880 5616 x 3744 - APS-C mode 4320 x 2880 - APS-C mode 7680 x 5760 4992 x 3744 3840 x 2880 4992 x 3744 - APS-C mode 3840 x 2880 - APS-C mode 8760 x 4864 5616 x 3160 4320 x 2432 5616 x 3160 - APS-C mode 4320 x 2432 - APS-C mode 5760 x 5760 3744 x 3744 2880 x 2880 3744 x 3744 - APS-C mode 2880 x 2880 - APS-C mode |
RAW 6192 x 4128 JPEG 6192 x 4128 JPEG 4752 x 3168 JPEG 3648 x 2432 JPEG 1920 x 1280 |
| Video Capture | XAVC HS - 7680 x 4320 p - 30 fps - 400Mbps XAVC HS - 7680 x 4320 p - 24 fps - 400Mbps XAVC HS - 7680 x 4320 p - 25 fps - 400Mbps XAVC HS - 3840 x 2160 p - 24 - 120 fps XAVC S - 3840 x 2160 p - 24 - 120 fps XAVC S - 1920 x 1080 p - 24 - 120 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 | Sony Alpha1 ILCE-1 | Pentax K-3 Mark III |
|---|
| Battery Type | Sony NP-FZ100 Lithium Ion | Pentax D-Li90 Lithium Ion |
|---|---|---|
| Details | Sony NP-FZ100 Li-ion rechargeable battery - 2280 mAh (included) | Pentax D-Li90 Li-ion rechargeable battery (included) |
| Battery Life | Photo shooting - 430 shots (LCD Monitor on) Photo shooting - 530 shots (EVF on) Video recording - 150 minutes (LCD Monitor on) Video recording - 145 minutes (EVF on) |
Photo shooting - 800 shots Playback - 250 minutes |
| CONNECTIONS | Sony Alpha1 ILCE-1 | Pentax K-3 Mark III |
|---|
| Interface | HDMI, USB-C, NFC (Near Field Communication), IEEE 802.11a/b/g/n/ac, Bluetooth 5.0 | HDMI, USB-C, IEEE 802.11b/g/n, Bluetooth 4.2 |
|---|---|---|
| Connectivity Features | Remote control via mobile devices, remote live view | Remote control via mobile devices, remote live view, Wireless Image Transfer |
| Print Standard | Exif Print support, PRINT Image Matching | Exif Print support |
| Computer Connectivity | - | Mac, Windows |
| Flash Terminal | Hot shoe, PC terminal | Hot shoe, PC terminal |
| Connector Type | HDMI output (19 pin micro HDMI Type D) Microphone (mini-phone stereo 3.5 mm) Headphones (mini-phone stereo 3.5 mm) Network (RJ-45) USB / AV output (micro-USB) USB (USB Type-C) |
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 | Sony Alpha1 ILCE-1 | Pentax K-3 Mark III |
|---|
| Self-Timer Delay | 10 sec, 2sec, 5 sec | 2sec, 12sec |
|---|---|---|
| Continuous Shooting Speed | 8 frames per second, 3 frames per second, 20 frames per second, 10 frames per second, 30 frames per second, 6 frames per second, 15 frames per second | 2.5 frames per second, 12 frames per second, 7 frames per second |
| HDR Mode | - | Auto HDR mode |
| Additional Features | Built-in speaker, RGB primary colour filter, AE lock, AF lock, interval shooting mode, Dynamic Range Optimizer, USB charging, Chromatic Aberration Compensation (CAC), Intelligent AUTO (iAUTO), Clear Image Zoom, noise reduction over long exposures, Lens Distortion Correction, high ISO speed noise reduction, silent shooting, BRAVIA Sync function, PhotoTV HD, GPS via mobile, peripheral shading correction, Flickering Reduction function | 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 | Sony Alpha1 ILCE-1 | Pentax K-3 Mark III |
|---|
| Included Accessories | Battery charger, body cap, shoulder strap, eyecup, shoe cap, cable protector, USB-C to USB-A cable | Eyepiece cover, carrying strap, battery charger, body cap, USB cable, eyecup, shoe cap, sync terminal cover |
|---|---|---|
| Software | - | Digital Camera Utility 5 |
| Max Operating Temperature | 40 °C | 40 °C |
| Min Operating Temperature | 0 °C | -10 °C |
| Service & Support | Limited warranty - parts and labour - 1 year | Limited warranty - 1 year |
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