Which camera is for you? Here is a quick overview and spec comparison of the Sony a7 III and the Sony a7R III.
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| Sony a7 III | Sony a7R III | |
| Announced | Feb 27, 2018 | Oct 25, 2017 |
| Price (Body Only) * as of Jan 2019 | $1,999 USD | $3,199 USD |
| Body Type | SLR Mirrorless | SLR Mirrorless |
| Sensor Type | Full Frame Exmor R CMOS (35.6 x 23.8 mm) | Full Frame Exmor R CMOS (35.9 x 24.0 mm) |
| Image Size (Pixels) | 6,000 x 4,000 | 7,952 x 5,304 |
| Effective Pixels | 24.2 megapixels | 42.4 megapixels |
| Image Stabilization | 5-axis image sensor shift | 5-axis image sensor shift |
| Lens Mount | Sony E mount | Sony E mount |
| Focal Length Multiplier | x 1.0 | x 1.0 |
| ISO | 100 – 51,200 | 100 – 32,000 |
| File Format | JPEG RAW (14-bit) | JPEG RAW (14-bit) |
| Number of Focus Points | 693 | 399 |
| Screen Type | 3″ type TFT Tilt Screen (2.95″ wide type) | 3″ type TFT Tilt Screen (2.95″ wide type) |
| Touch Screen | Yes | Yes |
| Monitor Resolution (Dot) | 921,600 | 1,440,000 |
| Viewfinder Type | Electric | Electric |
| Viewfinder Resolution (Dot) | 2,359,296 | 3,686,400 |
| Shutter Speed | 1/8,000 sec to 30 sec | 1/8,000 sec to 30 sec |
| Continuous Shooting | 10 fps | 10 fps |
| Silent Shutter | Yes | Yes |
| Built-in Flash | No | No |
| Video Resolution | 4K: 3,840 x 2,160 (24/25/30p 100M) FHD: 1,920 x 1,080 (120p 100M) | 4K: 3,840 x 2,160 (24/25/30p 100M) FHD: 1,920 x 1,080 (120p 100M) |
| Audio In (Microphone) | Yes | Yes |
| Audio Out (Headphone) | Yes | Yes |
| Media Slot | Slot 1: SD Memory Card (UHS-I/II Compliant) Slot 2: Memory Stick Duo / SD Memory Card (UHS-I Compliant) | Slot 1: SD Memory Card (UHS-I/II Compliant) Slot 2: Memory Stick Duo / SD Memory Card (UHS-I Compliant) |
| Battery Type | NP-FZ100 | NP-FZ100 |
| Battery Life (Still Images) | 610 shots (Viewfinder) 710 shots (LCD Monitor) | 530 shots (Viewfinder) 650 shots (LCD Monitor) |
| Battery Life (Movies) | 115 min (Viewfinder) 125 min (LCD Monitor) | 100 min (Viewfinder) 115 min (LCD Monitor) |
| USB Charging | Yes | Yes |
| Dimensions | W = 126.9 mm H = 95.6 mm D = 73.7 mm | W = 126.9 mm H = 95.6 mm D = 73.7 mm |
| Weight | 565 g (Body only) 650 g (With battery & memory card) | 572 g (Body only) 657 g (With battery & memory card) |
| Timelapse Recording | Yes (With the upcoming firmware v3) | Yes (With the upcoming firmware v3) |
| Other Features | Real-time Eye AF & Real-Time Eye AF for Animals (With firmware v3) | Real-time Eye AF & Real-Time Eye AF for Animals (With firmware v3) |