What is the sensor size of the Sony A7R III?
The Sony Alpha A7R III is a digital camera that has a full frame sensor at its core. This imager measures 35.9mm in width and 24.0mm in height, so that the total imaging area of the sensor amounts to 862 mm2.
The A7R III provides an image resolution of 42.2 megapixels, based on 7 952 horizontal pixels and 5 304 vertical pixels.
Sensor size comparison with a film slide
The sensor diagonal measures 43.2mm, which gives rise to a format factor (or crop factor) of 1.0. Therefore, the Sony A7R III is a full-frame camera, as its sensor size corresponds to that of a traditional 35mm film slide or negative.
Sensor specs and performance
The table below compares the sensor specs of the Sony A7R III to those of several similar cameras. The reported DXO values are indicators of the sensor's imaging quality (higher is better), covering color depth (DXO Portrait), dynamic range (DXO Landscape), and high-ISO noise (DXO Sports). Larger sensor cameras tend to outperform cameras of the same generation that are equipped with a smaller imager. On the other hand, larger sensors are more expensive and require bigger and heavier lenses than smaller light receptors.
| Camera Model |
Sensor Class |
Resolution (MP) |
Horiz. Pixels |
Vert. Pixels |
Video Format |
DXO Portrait |
DXO Landscape |
DXO Sports |
DXO Overall |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Sony A7R III | Full Frame | 42.2 | 7952 | 5304 | 4K/30p | 26.0 | 14.7 | 3523 | 100 | |
| 2. | Nikon Z7 | Full Frame | 45.4 | 8256 | 5504 | 4K/30p | 26.3 | 14.6 | 2668 | 99 | |
| 3. | Sony A1 | Full Frame | 49.8 | 8640 | 5760 | 8k/30p | 25.9 | 14.5 | 3163 | 98 | |
| 4. | Sony A7 III | Full Frame | 24.0 | 6000 | 4000 | 4K/30p | 25.0 | 14.7 | 3730 | 96 | |
| 5. | Sony A7R II | Full Frame | 42.2 | 7952 | 5304 | 4K/30p | 26.0 | 13.9 | 3434 | 98 | |
| 6. | Sony A7R IIIA | Full Frame | 42.2 | 7952 | 5304 | 4K/30p | 26.0 | 14.7 | 3523 | 100 | |
| 7. | Sony A7R IV | Full Frame | 60.2 | 9504 | 6336 | 4K/30p | 26.0 | 14.8 | 3344 | 99 | |
| 8. | Sony A7R IVA | Full Frame | 60.2 | 9504 | 6336 | 4K/30p | 26.0 | 14.8 | 3344 | 99 | |
| 9. | Sony A7R V | Full Frame | 60.2 | 9504 | 6336 | 8k/24p | 26.5 | 14.8 | 3187 | 100 | |
| 10. | Sony A7S III | Full Frame | 12.0 | 4240 | 2832 | 4K/120p | 23.7 | 13.9 | 2520 | 86 | |
| 11. | Sony A9 | Full Frame | 24.0 | 6000 | 4000 | 4K/30p | 24.9 | 13.3 | 3517 | 92 |
In the United States, the A7R III was initially launched in October 2017 at a price of $3,199.
Check A7R III offers at
ebay.com
Camera to camera comparisons
If you would like to see a side-by-side review with another camera, just make your choice using the following search menu. An an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.
- Canon G5 X Mark II vs Nikon Z6
- Canon SX420 vs Sony A7R III
- Canon SX60 vs Nikon Z6
- Fujifilm X-E2 vs Sony A7R III
- Nikon D40X vs Sony A7R III
- Nikon D800 vs Sony A7R III
- Nikon L840 vs Sony A7R III
- Nikon Z6 vs Olympus E-300
- Nikon Z6 vs Ricoh WG-60
- Nikon Z6 vs Sony A99 II
- Nikon Z6 vs Sony RX100 IV
- Panasonic G10 vs Sony A7R III
| Camera Model | Sony A7R III | |
|---|---|---|
| Camera Type | Mirrorless system camera | |
| Camera Lens | Sony E mount lenses | |
| Launch Date | October 2017 | |
| Launch Price | USD 3 199 | |
| Sensor Specs | ||
| Sensor Technology | BSI-CMOS | |
| Sensor Format | Full Frame Sensor | |
| Sensor Size | 35.9 x 24.0 mm | |
| Sensor Area | 862 mm2 | |
| Sensor Diagonal | 43.2 mm | |
| Crop Factor | 1.0x | |
| Sensor Resolution | 42.2 Megapixels | |
| Image Resolution | 7 952 x 5 304 pixels | |
| Pixel Pitch | 4.52 μm | |
| Pixel Density | 4.90 MP/cm2 | |
| Moiré control | no AA filter | |
| Movie Capability | 4K/30p Video | |
| ISO Setting | 100 - 32 000 ISO | |
| ISO Boost | 50 - 102 400 ISO | |
| Image Processor | BIONZ X | |
| DXO Sensor Quality (score) | 100 | |
| DXO Color Depth (bits) | 26.0 | |
| DXO Dynamic Range (EV) | 14.7 | |
| DXO Low Light (ISO) | 3523 | |
| Screen Specs | ||
| Viewfinder Type | Electronic viewfinder | |
| Viewfinder Field of View | 100% | |
| Viewfinder Magnification | 0.78x | |
| Viewfinder Resolution | 3686k dots | |
| Top-Level Screen | no Top Display | |
| LCD Framing | Live View | |
| LCD Size | 3.0 inch | |
| LCD Resolution | 1440k dots | |
| LCD Attachment | Tilting screen | |
| V-logging Friendliness | No front-flip | |
| Touch Input | Touchscreen | |
| Shooting Specs | ||
| Focus System | On-Sensor Phase-detect | |
| Manual Focusing Aid | Focus Peaking | |
| Maximum Shutter Speed | 1/8000s | |
| Continuous Shooting | 10 shutter flaps/s | |
| Shutter Life Expectancy | 500 000 actuations | |
| Silent Shooting | Electronic Shutter | |
| Time Lapse Photography | Intervalometer Built-in | |
| Image Stabilization | In-body stabilization | |
| Fill Flash | no On-Board Flash | |
| Storage Medium | MS or SDXC cards | |
| Single or Dual Card Slots | Dual card slots | |
| UHS card support | Single UHS-II | |
| Connectivity Specs | ||
| External Flash | Hotshoe | |
| Studio Flash | PC Sync socket | |
| USB Connector | USB 3.1 | |
| HDMI Port | micro HDMI | |
| Microphone Port | External MIC port | |
| Headphone Socket | Headphone port | |
| Wifi Support | Wifi built-in | |
| Near-Field Communication | NFC built-in | |
| Bluetooth Support | Bluetooth built-in | |
| Body Specs | ||
| Environmental Sealing | Weathersealed body | |
| Battery Type | Sony NP-FZ100 power pack | |
| Battery Life (CIPA) | 650 shots per charge | |
| In-Camera Charging | USB charging | |
| Body Dimensions |
127 x 96 x 74 mm (5.0 x 3.8 x 2.9 in) |
|
| Camera Weight | 650 g (22.9 oz) | |
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