Sony a7S III vs Canon EOS R3 Specifications Comparison
| Camera Feature | Sony a7S III | Canon EOS R3 |
|---|---|---|
| Announced | July 2020 | September 2021 |
| Camera Type | Mirrorless | Mirrorless |
| Sensor Type | BSI CMOS | Stacked CMOS |
| Image Processor | BIONZ XR | DIGIC X |
| Resolution | 12.1 MP | 24.0 MP |
| Pixel Dimensions | 4240×2832 | 6000×4000 |
| Sensor Dimensions | 35.6 x 23.8 mm (Full Frame) | 36.0 x 24.0 mm (Full Frame) |
| Sensor Pixel Size | 8.4µ | 6.00µ |
| Low Pass Filter | Yes | Yes |
| IBIS (In-Body Image Stabilization) | Yes | Yes |
| Base ISO | ISO 80 | ISO 100 |
| Max Native ISO | ISO 102,400 | ISO 102,400 |
| Extended ISOs | ISO 40-409,600 | ISO 50-204,800 |
| High-Resolution Sensor Shift | No | No |
| Focus Stack Bracketing | No | Yes |
| Pre-Shoot Burst Mode | No | No |
| Fastest Shutter Speed | 1/8000 | 1/64,000 |
| Longest Shutter Speed | 30 seconds | 30 seconds |
| Continuous Shooting (Mechanical Shutter) | 10 FPS | 12 FPS |
| Continuous Shooting (Electronic Shutter) | 10 FPS | 30 FPS |
| Notes for High FPS Shooting | None | 195 FPS is possible, but only for 0.25 seconds of shooting. Auto exposure is locked at this FPS. |
| Buffer Size (Raw) | Over 1000 frames (10 FPS) | 420 frames (30 FPS) |
| Autofocus System | Hybrid PDAF | Hybrid PDAF |
| Autofocus Points | 759 | 1053 |
| Photographer’s-Eye-Sensing AF | N/A | Yes |
| Maximum Low-Light AF Sensitivity (Standardized to f/2, ISO 100) | -6 EV | -6 EV |
| Standard Flash Sync Speed | 1/250 | 1/250 |
| Curtain to Protect Sensor at Shutdown | No | Yes |
Video Features | ||
| Maximum Video Bit Depth (Internal) | 10 bits | 12 bits |
| Maximum Video Bit Depth (External) | 16 bits | 12 bits |
| Raw Video | Yes, externally | Yes |
| 6K Maximum Framerate | N/A | 60 FPS |
| 4K Maximum Framerate | 120 FPS | 120 FPS |
| 1080P Maximum Framerate | 240 FPS | 240 FPS |
| Additional Video Crop Factor | 1.1x crop at 4K 120p (otherwise no additional crop) | No |
| Chroma Subsampling | 4:2:2 | 4:2:2 |
| Video Recording Limit | 780 min | 360 min |
Physical and Other Features | ||
| Card Slots | 2 | 2 |
| Slot 1 Type | CFExpress Type A, or SD (UHS-II) | CFExpress Type B |
| Slot 2 Type | CFExpress Type A, or SD (UHS-II) | SD (UHS-II) |
| Rear LCD Size (Diagonal) | 3.0 in | 3.2 in |
| Rear LCD Resolution | 1.44 million dots | 4.2 million dots |
| Articulating LCD | Fully Articulating | Fully Articulating |
| Touchscreen | Yes | Yes |
| Viewfinder | EVF | EVF |
| Viewfinder Magnification | 0.90x | 0.76x |
| Viewfinder Resolution | 9.44 million dots | 5.76 million dots |
| Viewfinder Coverage | 100% | 100% |
| Voice Memo | No | Yes |
| Headphone Jack | Yes | Yes |
| Microphone Jack | Yes | Yes |
| Built-in Flash | No | No |
| GPS | No | No |
| Bluetooth | Yes | Yes |
| WiFi | Yes | Yes |
| USB Type | Type C 3.2 Gen 1 | Type C 3.2 Gen 2 |
| Battery Type | NP-FZ100 | LP-E19 |
| Battery Life (Viewfinder) | 510 frames | 440 frames |
| Battery Life (Rear LCD) | 600 frames | 760 frames |
| Battery Life (Eco Mode) | N/A | 860 frames |
| Weather Sealed | Yes | Yes |
| Weight (Body Only w/ Battery + Card) | 699 g (1.54 lbs.) | 1015 g (2.24 lbs.) |
| Dimensions (LxHxD) | 129 x 97 x 81 mm (5.1 x 3.9 x 3.3″) | 150 x 143 x 107 mm (5.9 x 5.6 x 4.2″)1 |
Price Comparison | ||
| MSRP, Body Only | $3500 (Check Current Price) | $6000 (Check Current Price) |
| Used Prices (Affiliate) | Sony a7S III Used Prices | Canon EOS R3 Used Prices |
| 1The Canon EOS R3’s official dimensions do not include the depth of the protruding viewfinder. To match the typical standards today, 20mm were added to the EOS R3’s depth measurement in this table. | ||
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