Side by side comparison and review of Sony Alpha7R III ILCE-7RM3 and Pentax K-1 II. 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 Alpha7R III ILCE-7RM3 | Pentax K-1 II |
|---|
| Product Type | Digital camera - 4K - mirrorless system | Digital camera - 1080p - SLR with Live View mode, movie recording |
|---|---|---|
| Lens Included | Body only | Body only |
| Height | 9.56 cm | 11 cm |
| Width | 12.69 cm | 13.65 cm |
| Depth | 7.37 cm | 8.55 cm |
| Weight | 572 g | 925 g |
| Weight Details | Camera body only: 572 g Camera with battery and memory card: 675 g |
Camera body only: 925 g Camera with battery and memory card: 1010 g |
| Body Material | Magnesium alloy | - |
| Enclosure Colour | Black | Silver |
| Protection | Dust-resistant, moisture-resistant | Weatherproof, freezeproof, dust-resistant |
| Digital Zoom | 4x | - |
| Navigation | - | GPS receiver |
| SENSOR | Sony Alpha7R III ILCE-7RM3 | Pentax K-1 II |
|---|
| Sensor Resolution | 42.4 Megapixel | 36.4 Megapixel |
|---|---|---|
| Optical Sensor Type | Exmor R CMOS | CMOS |
| Total Pixels | 43,600,000 pixels | 36,770,000 pixels |
| Effective Sensor Resolution | 42,400,000 pixels | 36,400,000 pixels |
| Optical Sensor Size | Full Frame (35.9 x 24 mm) | 35.9 x 24.0 mm |
| Frame Rate (Max Resolution) | 30 fps | 30 fps |
| Sensor Dust Reduction | Yes | Yes |
| Sensor Features | Dust Reduction (image sensor vibration), Anti-Dust coating | Ultrasonic Wave Motion Cleaning (UWMC) |
| Image Stabiliser | Optical (5-axis Steady Shot) | Optical (5-axis image sensor shift mechanism) |
| Built-in Optical Image Stabiliser | Yes | Yes |
| Sensors | Digital level metre | Magnetometer, digital level metre |
| PROCESSOR | Sony Alpha7R III ILCE-7RM3 | Pentax K-1 II |
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| Image Processor | BIONZ X | PRIME IV |
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| LENS | Sony Alpha7R III ILCE-7RM3 | Pentax K-1 II |
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| Lens Mounting Type | Sony E-mount | Pentax K |
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| FOCUSING | Sony Alpha7R III ILCE-7RM3 | Pentax K-1 II |
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| Auto Focus | TTL contrast and phase detection | TTL contrast and phase detection |
|---|---|---|
| Auto Focus Points (Zones) Qty | 399 | 33 |
| Auto Focus Features | Focus Peaking function, Predictive Focus Control | - |
| AE/AF Control | Flex Focus Point, Eye detection AF, Zone AF | - |
| Face Detection | Eye Detect AF, face-priority AF function | Yes |
| VIEWFINDER | Sony Alpha7R III ILCE-7RM3 | Pentax K-1 II |
|---|
| Viewfinder Type | Electronic - OLED | Optical - fixed eye-level pentaprism |
|---|---|---|
| Viewfinder Colour Support | Colour | - |
| Viewfinder Diagonal Size | 0.5" | - |
| Viewfinder Resolution | 3,686,400 pixels | - |
| Optical Viewfinder Field Coverage | 100% | 100% |
| Optical Viewfinder Magnification | 0.78x | 0.70x |
| Optical Viewfinder Dioptric Correction Range | -4 to +3 | -3 to +1.2 |
| Features | Viewfinder brightness control, colour temperature control | - |
| EXPOSURE & WHITE BALANCE | Sony Alpha7R III ILCE-7RM3 | Pentax K-1 II |
|---|
| ISO (Max) | 102400 | 819200 |
|---|---|---|
| Native ISO | - | 100-819200 |
| Light Sensitivity | ISO 50, ISO 102400, ISO auto (100-12800), ISO 100-32000 | ISO auto, ISO 100-819200 |
| Exposure Metering | Multi-segment, centre-weighted, spot | Multi-segment, centre-weighted, spot |
| 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 | - |
| Special Effects | Black & White, Sepia, Neutral, Vivid, sunset, landscape, portrait, clear, deep, light, autumn leaves, Retro, partial colour, Toy camera, Posterisation, High contrast monochrome, Pop Colour, Soft High-key, Night Scene, Standard, Style Box, Posterisation (B/W) | - |
| White Balance | Custom, automatic, presets | Custom, automatic, presets |
| White Balance Presets | Incandescent, cloudy, Flash, daylight, shade, fluorescent light (cool white), fluorescent light (daylight), fluorescent light (warm white), Underwater, 2500K - 9900K, fluorescent light (daylight white) | 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 |
| Shutter Type | - | 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, 9 steps in 1/3, 1/2, 2/3, 1, 2 or 3 EV steps | - |
| White Balance Bracketing | Yes | - |
| X-sync Speed | 1/250sec | 1/200sec |
| Exposure Range | EV -3-20 (ISO 100) | EV -3-20 (ISO 100) |
| DISPLAY | Sony Alpha7R III ILCE-7RM3 | Pentax K-1 II |
|---|
| Type | 3" LCD display | 3.2" LCD display |
|---|---|---|
| Touch Screen | Yes | - |
| Display Format | 1,440,000 pixels | 1,037,000 pixels |
| Display Form Factor | Folding | Folding |
| Display Features | Display brightness control, Peaking AF display, Touch AF | Colour control, display brightness control, display saturation control |
| FLASH | Sony Alpha7R III ILCE-7RM3 | Pentax K-1 II |
|---|
| Features | AF illuminator | - |
|---|
| VIDEOGRAPHY / CAMCORDER | Sony Alpha7R III ILCE-7RM3 | Pentax K-1 II |
|---|
| Digital Video Format | AVCHD, XAVC S | H.264, MOV |
|---|---|---|
| Image Recording Format | JPEG, RAW, RAW + JPEG | JPEG, RAW + JPEG, DNG (RAW), PEF (RAW) |
| Max Video Resolution | 3840 x 2160 | 1920 x 1080 |
| Audio Signal Format | Dolby Digital AC-3 (2 channel), Linear PCM | - |
| Microphone Operation Mode | Stereo | Stereo |
| Microphone Features | - | Wind noise reduction |
| MEMORY | Sony Alpha7R III ILCE-7RM3 | Pentax K-1 II |
|---|
| Memory Card Slot | Memory Stick PRO Duo card, SD card | Dual SD card |
|---|---|---|
| Supported Memory Cards | SD Memory Card, Memory Stick PRO Duo, SDXC Memory Card, SDHC Memory Card, Memory Stick PRO-HG Duo, 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-I Memory Card, SDXC UHS-I Memory Card |
| Memory Card Included | No | No |
| Image Storage | 7952 x 5304 7952 x 4472 5168 x 3448 5168 x 2912 3984 x 2656 3984 x 2240 2592 x 1728 2592 x 1456 |
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 |
| Video Capture | AVCHD - 1920 x 1080 i - 60 fps - 24Mbps AVCHD - 1920 x 1080 i - 60 fps - 17Mbps AVCHD - 1920 x 1080 i - 50 fps - 24Mbps AVCHD - 1920 x 1080 i - 50 fps - 17Mbps XAVC S - 3840 x 2160 p - 30 fps - 100Mbps XAVC S - 3840 x 2160 p - 24 fps - 100Mbps XAVC S - 3840 x 2160 p - 30 fps - 60Mbps XAVC S - 3840 x 2160 p - 24 fps - 60Mbps XAVC S - 1920 x 1080 p - 60 fps - 100Mbps XAVC S - 1920 x 1080 p - 120 fps - 60Mbps XAVC S - 1920 x 1080 p - 60 fps - 50Mbps XAVC S - 1920 x 1080 p - 30 fps - 50Mbps XAVC S - 1920 x 1080 p - 24 fps - 50Mbps XAVC S - 1920 x 1080 p - 60 fps - 25Mbps XAVC S - 1920 x 1080 p - 30 fps - 16Mbps XAVC S - 3840 x 2160 p - 25 fps - 100Mbps XAVC S - 3840 x 2160 p - 25 fps - 60Mbps XAVC S - 1920 x 1080 p - 100 fps - 100Mbps XAVC S - 1920 x 1080 p - 100 fps - 60Mbps XAVC S - 1920 x 1080 p - 50 fps - 50Mbps XAVC S - 1920 x 1080 p - 25 fps - 50Mbps XAVC S - 1920 x 1080 p - 50 fps - 25Mbps XAVC S - 1920 x 1080 p - 25 fps - 16Mbps |
1920 x 1080 i - 60 fps 1920 x 1080 i - 50 fps 1920 x 1080 p - 30 fps 1920 x 1080 p - 25 fps 1920 x 1080 p - 24 fps 1280 x 720 p - 60 fps 1280 x 720 p - 50 fps |
| BATTERY AND CHARGING | Sony Alpha7R III ILCE-7RM3 | Pentax K-1 II |
|---|
| 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 - 650 shots (LCD Monitor on) Photo shooting - 530 shots (EVF on) Video recording - 1.92 hours (LCD Monitor on) Video recording - 1.67 hours (EVF on) |
Photo shooting - 670 shots Playback - 340 minutes |
| CONNECTIONS | Sony Alpha7R III ILCE-7RM3 | Pentax K-1 II |
|---|
| Interface | HDMI, USB 2.0, USB-C, IEEE 802.11b/g/n, NFC (Near Field Communication), Bluetooth 4.1 | HDMI, USB 2.0, IEEE 802.11b/g/n |
|---|---|---|
| Connectivity Features | Remote live view | - |
| Print Standard | DPOF support, Exif Print support, PRINT Image Matching | - |
| Computer Connectivity | - | Mac, Windows |
| Flash Terminal | Hot shoe, PC terminal | Hot shoe, PC terminal |
| Connector Type | USB 2.0 (5 pin Micro-USB Type B) USB 3.1 (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) |
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) |
| FEATURES | Sony Alpha7R III ILCE-7RM3 | Pentax K-1 II |
|---|
| Self-Timer Delay | 10 sec, 2sec, 5 sec | 2sec, 12sec |
|---|---|---|
| Continuous Shooting Speed | 8 frames per second, 3 frames per second, 10 frames per second, 6 frames per second | 3 frames per second, 1 frame per second, 0.7 frames per second, 6.4 frames per second, 4.4 frames per second |
| HDR Mode | HDR Movie mode | Auto HDR mode |
| Additional Features | Built-in speaker, sharpness control, camera orientation detection, histogram display, saturation control, contrast control, Dynamic Range Optimizer, USB charging, built-in help guide, Dolby Digital Stereo Creator, x.v.Colour technology, HDR image enhancement technology, Clear Image Zoom, noise reduction over long exposures, Lens Distortion Correction, silent shooting, GPS via mobile, S-Log2 gamma setting, Pixel Shift Resolution technology, peripheral shading correction, chromatic aberration correction, anti-flicker, Hybrid Log-Gamma (HLG) recording, S-Log3 gamma setting | Audio recording, digital image rotation, camera orientation detection, histogram display, AE lock, AF lock, cropping an image, resizing an image, interval shooting mode, in-camera RAW processing, peripheral illumination correction, High ISO NR, no anti-aliasing filter, Lens Distortion Correction, primary colour filter, colour moire correction, Lateral Chromatic Aberration Correction, anti-aliasing filter simulator, diffraction correction, Pixel Shift Resolution System II |
| OTHERS | Sony Alpha7R III ILCE-7RM3 | Pentax K-1 II |
|---|
| Included Accessories | Eyepiece cover, battery charger, body cap, shoulder strap, shoe cap, cable protector, USB-C cable | Eyepiece cover, battery charger, body cap, battery grip, eyecup, shoe cap, additional battery, battery grip terminal cover, sync terminal cover |
|---|---|---|
| Software | - | Digital Camera Utility 5 |
| Max Operating Temperature | 40 °C | 40 °C |
| Min Operating Temperature | 0 °C | -10 °C |
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