In depth comparison and review of Panasonic Lumix G DMC-GX8K + 14-42mm and Sony Alpha7R III ILCE-7RM3. 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 | Panasonic Lumix G DMC-GX8K + 14-42mm | Sony Alpha7R III ILCE-7RM3 |
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| Product Type | Digital camera - 4K - mirrorless system | Digital camera - 4K - mirrorless system |
|---|---|---|
| Lens Included | 14-42mm lens | Body only |
| Height | 7.79 cm | 9.56 cm |
| Width | 13.32 cm | 12.69 cm |
| Depth | 6.31 cm | 7.37 cm |
| Weight | 435 g | 572 g |
| Weight Details | - | Camera body only: 572 g Camera with battery and memory card: 675 g |
| Body Material | - | Magnesium alloy |
| Enclosure Colour | Silver | Black |
| Protection | Splashproof | Dust-resistant, moisture-resistant |
| Digital Zoom | 4x | 4x |
| Optical Zoom | 3x | - |
| SENSOR | Panasonic Lumix G DMC-GX8K + 14-42mm | Sony Alpha7R III ILCE-7RM3 |
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| Sensor Resolution | 20.3 Megapixel | 42.4 Megapixel |
|---|---|---|
| Optical Sensor Type | Live MOS | Exmor R CMOS |
| Total Pixels | 21,770,000 pixels | 43,600,000 pixels |
| Effective Sensor Resolution | 20,300,000 pixels | 42,400,000 pixels |
| Optical Sensor Size | Four Thirds (17.3 x 13.0 mm) | Full Frame (35.9 x 24 mm) |
| Frame Rate (Max Resolution) | 25 fps | 30 fps |
| Sensor Dust Reduction | Yes | Yes |
| Sensor Features | Supersonic Wave Filter (SWF) | Dust Reduction (image sensor vibration), Anti-Dust coating |
| Image Stabiliser | Optical (image sensor shift mechanism) | Optical (5-axis Steady Shot) |
| Built-in Optical Image Stabiliser | Yes | Yes |
| Sensors | Digital level metre | Digital level metre |
| PROCESSOR | Panasonic Lumix G DMC-GX8K + 14-42mm | Sony Alpha7R III ILCE-7RM3 |
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| Image Processor | - | BIONZ X |
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| LENS | Panasonic Lumix G DMC-GX8K + 14-42mm | Sony Alpha7R III ILCE-7RM3 |
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| Type | Zoom lens - 3x zoom - 14 - 42 mm - f/3.5-5.6 G II | - |
|---|---|---|
| Focal Length Equivalent to 35mm Camera | 28 - 84mm | - |
| Focus Adjustment | Automatic, manual | - |
| Min Focus Distance | 20 cm | - |
| Max View Angle | 75 degree(s) | - |
| Zoom Adjustment | Manual | - |
| Lens Construction | 8 groups / 9 elements | - |
| Filter Size | 46 mm | - |
| Lens Mounting Type | Micro Four Thirds | Sony E-mount |
| Features | Internal focusing system, aspherical lens, Stepping Motor (STM) technology | - |
| FOCUSING | Panasonic Lumix G DMC-GX8K + 14-42mm | Sony Alpha7R III ILCE-7RM3 |
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| Auto Focus | TTL contrast detection | TTL contrast and phase detection |
|---|---|---|
| Auto Focus Points (Zones) Qty | 49 | 399 |
| Auto Focus Features | Focus Peaking function | Focus Peaking function, Predictive Focus Control |
| AE/AF Control | Face-priority AF, Subject-tracking AF, Touch Area AF | Flex Focus Point, Eye detection AF, Zone AF |
| Face Detection | Yes | Eye Detect AF, face-priority AF function |
| VIEWFINDER | Panasonic Lumix G DMC-GX8K + 14-42mm | Sony Alpha7R III ILCE-7RM3 |
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| Viewfinder Type | Electronic - OLED | Electronic - OLED |
|---|---|---|
| Viewfinder Colour Support | Colour | Colour |
| Viewfinder Diagonal Size | - | 0.5" |
| Viewfinder Resolution | 2,360,000 pixels | 3,686,400 pixels |
| Optical Viewfinder Field Coverage | 100% | 100% |
| Optical Viewfinder Magnification | 1.54x | 0.78x |
| Optical Viewfinder Dioptric Correction Range | -4 to +3 | -4 to +3 |
| Field of View Crop Factor | 2 | - |
| Features | Auto eye sensor | Viewfinder brightness control, colour temperature control |
| EXPOSURE & WHITE BALANCE | Panasonic Lumix G DMC-GX8K + 14-42mm | Sony Alpha7R III ILCE-7RM3 |
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| ISO (Max) | 25600 | 102400 |
|---|---|---|
| Native ISO | 200-12800 | - |
| Extended ISO (Max) | 25600 | - |
| Extended ISO (Min) | 100 | - |
| Light Sensitivity | ISO 100, ISO 800, ISO 400, ISO 200, ISO 1600, ISO 6400, ISO 3200, ISO auto, ISO 12800, ISO 25600 | ISO 50, ISO 102400, ISO auto (100-12800), ISO 100-32000 |
| Exposure Metering | Multi-segment, centre-weighted, spot | Multi-segment, centre-weighted, spot |
| Exposure Metering Zones | 1728 | 1200 |
| Exposure Modes | Programme, bulb, automatic, manual, aperture-priority, shutter-priority | Bulb, automatic, manual, aperture-priority, shutter-priority |
| Bracketing Modes | - | Dynamic Range Bracketing, white balance bracketing |
| Special Effects | Sepia, Vivid, natural, monochrome, landscape, portrait, Cross Process, Retro, Expressive, high dynamic, Bleach Bypass, Selective Colour, High Key, Low Key, Toy effect, Star Filter, Impressive Art, One Point Colour, Dynamic Monochrome, Sunshine, Old Days, Toy Pop, Rough Monochrome, Silky Monochrome | 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 | Cloudy, tungsten light, Flash, daylight, shade, 2500K - 10000K (100K steps) | Incandescent, cloudy, Flash, daylight, shade, fluorescent light (cool white), fluorescent light (daylight), fluorescent light (warm white), Underwater, 2500K - 9900K, fluorescent light (daylight white) |
| Shutter Type | Electronic | - |
| Max Shutter Speed | 1/8000 sec | 1/8000 sec |
| Min Shutter Speed | 60 sec | 30 sec |
| Exposure Compensation | ±5 EV range, in 1/3 EV steps | ±5 EV range, in 1/2 or 1/3 EV steps |
| Auto Exposure Bracketing | 7 steps in 1/3, 2/3 or 1 EV steps | 3, 5, 9 steps in 1/3, 1/2, 2/3, 1, 2 or 3 EV steps |
| White Balance Bracketing | Yes | Yes |
| X-sync Speed | 1/125sec | 1/250sec |
| Exposure Range | EV 0-18 (ISO 100) | EV -3-20 (ISO 100) |
| Retouch | Clear Retouch function | - |
| DISPLAY | Panasonic Lumix G DMC-GX8K + 14-42mm | Sony Alpha7R III ILCE-7RM3 |
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| Type | 3" OLED display | 3" LCD display |
|---|---|---|
| Touch Screen | Yes | Yes |
| Display Format | 1,040,000 pixels | 1,440,000 pixels |
| Display Form Factor | Folding | Folding |
| Display Features | Display brightness control, display colour control, display contrast control, Touch AE, Touch AF | Display brightness control, Peaking AF display, Touch AF |
| FLASH | Panasonic Lumix G DMC-GX8K + 14-42mm | Sony Alpha7R III ILCE-7RM3 |
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| Camera Flash | Pop-up flash | - |
|---|---|---|
| Flash Modes | Fill-in mode, slow synchro, auto mode, flash OFF mode, red-eye reduction | - |
| Red-Eye Reduction | Yes | - |
| Features | AF illuminator | AF illuminator |
| VIDEOGRAPHY / CAMCORDER | Panasonic Lumix G DMC-GX8K + 14-42mm | Sony Alpha7R III ILCE-7RM3 |
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| Digital Video Format | AVCHD, H.264 | AVCHD, XAVC S |
|---|---|---|
| Image Recording Format | JPEG, RAW, RAW + JPEG, MPO, MPO + JPEG | JPEG, RAW, RAW + JPEG |
| Max Video Resolution | 3840 x 2160 | 3840 x 2160 |
| Audio Signal Format | - | Dolby Digital AC-3 (2 channel), Linear PCM |
| Surround Sound | Dolby Digital AC-3 (2 channel) recording | - |
| Microphone Operation Mode | Stereo | Stereo |
| Microphone Features | Wind noise reduction | - |
| MEMORY | Panasonic Lumix G DMC-GX8K + 14-42mm | Sony Alpha7R III ILCE-7RM3 |
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| Memory Card Slot | SD card | Memory Stick PRO Duo card, SD card |
|---|---|---|
| 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, 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 |
| Memory Card Included | No | No |
| Image Storage | 5184 x 3888 3712 x 2784 2624 x 1968 MPO 1824 x 1368 - 3D mode 5184 x 3456 3712 x 2480 2624 x 1752 MPO 1824 x 1216 - 3D mode 5184 x 2920 3840 x 2160 1920 x 1080 MPO 1824 x 1024 - 3D mode 3888 x 3888 2784 x 2784 1968 x 1968 MPO 1712 x 1712 - 3D mode |
7952 x 5304 7952 x 4472 5168 x 3448 5168 x 2912 3984 x 2656 3984 x 2240 2592 x 1728 2592 x 1456 |
| Video Capture | AVCHD - 3840 x 2160 - 25 fps - 100Mbps AVCHD - 3840 x 2160 - 24 fps - 100Mbps AVCHD - 1920 x 1080 - 50 fps - 28Mbps AVCHD - 1920 x 1080 - 25 fps - 20Mbps AVCHD - 1280 x 720 - 25 fps - 10Mbps H.264 - 640 x 480 - 25 fps - 4Mbps |
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 |
| BATTERY AND CHARGING | Panasonic Lumix G DMC-GX8K + 14-42mm | Sony Alpha7R III ILCE-7RM3 |
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| Battery Type | Lithium Ion - manufacturer-specific | Sony NP-FZ100 Lithium Ion |
|---|---|---|
| Details | Li-ion rechargeable battery - 1200 mAh (included) | Sony NP-FZ100 Li-ion rechargeable battery - 2280 mAh (included) |
| Battery Life | Photo shooting - 330 shots | 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) |
| CONNECTIONS | Panasonic Lumix G DMC-GX8K + 14-42mm | Sony Alpha7R III ILCE-7RM3 |
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| Interface | Composite video/audio, HDMI, USB 2.0, IEEE 802.11b/g/n, NFC (Near Field Communication) | HDMI, USB 2.0, USB-C, IEEE 802.11b/g/n, NFC (Near Field Communication), Bluetooth 4.1 |
|---|---|---|
| Connectivity Features | Remote control via mobile devices, remote live view | Remote live view |
| Print Standard | Direct print, Exif Print support, PictBridge support | DPOF support, Exif Print support, PRINT Image Matching |
| Flash Terminal | Hot shoe | Hot shoe, PC terminal |
| Connector Type | USB 2.0 Composite video/audio output HDMI output (19 pin micro HDMI Type D) Remote control (sub-mini phone 2.5 mm) Microphone (sub-mini phone stereo 2.5 mm) |
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) |
| FEATURES | Panasonic Lumix G DMC-GX8K + 14-42mm | Sony Alpha7R III ILCE-7RM3 |
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| Self-Timer Delay | 10 sec, 2sec | 10 sec, 2sec, 5 sec |
|---|---|---|
| Continuous Shooting Speed | 2 frames per second, 8 frames per second, 10 frames per second, 6 frames per second, 5.5 frames per second | 8 frames per second, 3 frames per second, 10 frames per second, 6 frames per second |
| HDR Mode | - | HDR Movie mode |
| Additional Features | Built-in speaker, RGB primary colour filter, digital image rotation, histogram display, cropping an image, resizing an image, in-camera film editing, Intelligent Resolution Technology, Dolby Digital Stereo Creator, Intelligent Auto (iA), Intelligent D-range Control, HDR image enhancement technology, 3D photo shooting, text stamp, Touch Shutter technology, Multi-process Noise Reduction, Time-Lapse recording, Light Speed AF, silent shooting, Creative Panorama function | 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 |
| OTHERS | Panasonic Lumix G DMC-GX8K + 14-42mm | Sony Alpha7R III ILCE-7RM3 |
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| Included Accessories | Battery charger, dust cap, body cap, lens cap, shoulder strap, USB cable, power cable, hot shoe cap, housing cover | Eyepiece cover, battery charger, body cap, shoulder strap, shoe cap, cable protector, USB-C cable |
|---|---|---|
| Software | Drivers & Utilities, Loilo LoiLoScope (Trial), Panasonic PHOTOfunSTUDIO 9.7 Premium Edition, SILKYPIX Developer Studio 4.3 SE | - |
| Max Operating Temperature | 40 °C | 40 °C |
| Min Operating Temperature | 0 °C | 0 °C |
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