What is the crop factor of the Sony A7 III?
The Sony Alpha A7 III is equipped with a full frame sensor, whose diagonal measures 42.8mm. The sensor has a crop factor (or format factor, or focal length multiplier) of 1.0.
The crop factor is defined as the ratio of the 35mm full-frame film diagonal to the diagonal of a digital sensor. This number indicates how a lens behaves in relation to the size of the image sensor.
Sensor size comparison with a film slide
With a crop factor of 1.0, the sensor in the Sony A7 III has a similar size as a 35mm film slide or negative. As a result, a lens that is attached to the Sony A7 III will offer the same angle of view and provide the same depth of field as a lens of the same focal length and aperture on a film camera.
Sensor specs and performance
The table below compares the sensor specs of the Sony A7 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 A7 III | Full Frame | 24.0 | 6000 | 4000 | 4K/30p | 25.0 | 14.7 | 3730 | 96 | |
| 2. | Canon 6D Mark II | Full Frame | 26.0 | 6240 | 4160 | 1080/60p | 24.4 | 11.9 | 2862 | 85 | |
| 3. | Nikon Z6 | Full Frame | 24.3 | 6048 | 4024 | 4K/30p | 25.3 | 14.3 | 3299 | 95 | |
| 4. | Sony A7 II | Full Frame | 24.0 | 6000 | 4000 | 1080/60p | 24.9 | 13.6 | 2449 | 90 | |
| 5. | Sony A7 IV | Full Frame | 32.7 | 7008 | 4672 | 4K/60p | 25.4 | 14.7 | 3379 | 97 | |
| 6. | Sony A7C | Full Frame | 24.0 | 6000 | 4000 | 4K/30p | 25.0 | 14.7 | 3407 | 95 | |
| 7. | Sony A7R III | Full Frame | 42.2 | 7952 | 5304 | 4K/30p | 26.0 | 14.7 | 3523 | 100 | |
| 8. | Sony A7R IIIA | Full Frame | 42.2 | 7952 | 5304 | 4K/30p | 26.0 | 14.7 | 3523 | 100 | |
| 9. | Sony A7R IV | Full Frame | 60.2 | 9504 | 6336 | 4K/30p | 26.0 | 14.8 | 3344 | 99 | |
| 10. | Sony A9 | Full Frame | 24.0 | 6000 | 4000 | 4K/30p | 24.9 | 13.3 | 3517 | 92 | |
| 11. | Sony A9 II | Full Frame | 24.0 | 6000 | 4000 | 4K/30p | 25.0 | 14.0 | 3434 | 93 |
In the United States, the A7 III was initially launched in February 2018 at a price of $1,999.
Check A7 III price at
amazon.com
Camera to camera comparisons
If you would like to see a side-by-side review with another camera, just use the search menu below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.
| Camera Model | Sony A7 III | |
|---|---|---|
| Camera Type | Mirrorless system camera | |
| Camera Lens | Sony E mount lenses | |
| Launch Date | February 2018 | |
| Launch Price | USD 1 999 | |
| Sensor Specs | ||
| Sensor Technology | BSI-CMOS | |
| Sensor Format | Full Frame Sensor | |
| Sensor Size | 35.6 x 23.8 mm | |
| Sensor Area | 847 mm2 | |
| Sensor Diagonal | 42.8 mm | |
| Crop Factor | 1.0x | |
| Sensor Resolution | 24 Megapixels | |
| Image Resolution | 6 000 x 4 000 pixels | |
| Pixel Pitch | 5.94 μm | |
| Pixel Density | 2.83 MP/cm2 | |
| Moiré control | Anti-Alias filter | |
| Movie Capability | 4K/30p Video | |
| ISO Setting | 100 - 51 200 ISO | |
| ISO Boost | 50 - 204 800 ISO | |
| Image Processor | BIONZ X | |
| DXO Sensor Quality (score) | 96 | |
| DXO Color Depth (bits) | 25.0 | |
| DXO Dynamic Range (EV) | 14.7 | |
| DXO Low Light (ISO) | 3730 | |
| Screen Specs | ||
| Viewfinder Type | Electronic viewfinder | |
| Viewfinder Field of View | 100% | |
| Viewfinder Magnification | 0.78x | |
| Viewfinder Resolution | 2359k dots | |
| Top-Level Screen | no Top Display | |
| LCD Framing | Live View | |
| LCD Size | 3.0 inch | |
| LCD Resolution | 922k 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 | 200 000 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 | |
| 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) | 610 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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