Which camera is for you? Here is a quick overview and spec comparison of the Sony a7R IV and the Sony a7R III.
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| Olympus E-M1 Mark II | Olympus E-M5 Mark II | |
| Announced | Jul 16, 2016 | Oct 25, 2017 |
| Price (Body Only) * as of July 2019 | $3,500 USD | $2,499 USD |
| Body Type | SLR Style Mirrorless | SLR Style Mirrorless |
| Sensor Type | Full Frame Exmor R CMOS (35.7 x 23.8 mm) | Full Frame Exmor R CMOS (35.9 x 24.0 mm) |
| Image Size (Pixels) | 9,504 x 6,336 | 7,952 x 5,304 |
| Effective Pixels | 61.0 megapixels | 42.4 megapixels |
| Image Stabilization (Sensor Shift) | Yes | Yes |
| Lens Mount | E-mont | E-mont |
| Focal Length Multiplier | x 1.0 | x 1.0 |
| ISO | 100 – 32,000 | 100 – 32,000 |
| File Format | JPEG RAW (14-bit) | JPEG RAW (14-bit) |
| Number of Focus Points | 567 | 399 |
| Screen Type | 3″ type TFT Tilt Screen | 3″ type TFT Tilt Screen |
| Touch Screen | Yes | Yes |
| Monitor Resolution (Dot) | 1,440,000 | 1,440,000 |
| Viewfinder Type | Electric | Electric |
| Viewfinder Resolution (Dot) | 5,760,000 | 3,686,000 |
| Shutter Speed | 1/8,000 to 30 sec | 1/8,000 to 30 sec |
| Continuous Shooting | 10 fps | 10 fps |
| Silent Shutter | Yes | Yes |
| Built-in Flash | No | No |
| Video Resolution *24/20/120p: NTSC *25/100p: PAL | 4K: 3,840 x 2,160 (24/25/30p 100M) FHD: 1,920 x 1,080 (100/120p 100M) | 4K: 3,840 x 2,160 (24/25/30p 100M) FHD: 1,920 x 1,080 (100/120p 100M) |
| Audio In (Mic) | Yes | Yes |
| Audio Out (Headphone) | Yes | Yes |
| Media Slot | Slot 1: SD/SDHC/SDXC Memory Card (UHS-I/II Compliant) | Slot 1: SD/SDHC/SDXC Memory Card (UHS-I/II Compliant) Slot 2: Memory Stick Duo/SD/SDHC/SDXC (UHS-I Compliant) |
| Battery Type | NP-FZ100 | NP-FZ100 |
| Battery Life (Still Images) | 530 shots (Viewfinder) 670 shots (LCD monitor) | 530 shots (Viewfinder) 650 shots (LCD monitor) |
| Battery Life (Movies) | 90 min (Viewfinder) 105 min (LCD monitor) | 100 min (Viewfinder) 115 min (LCD monitor) |
| USB Charging | Yes | Yes |
| Dimensions | W = 128.9 mm H = 96.4 mm D = 77.5 mm | W = 126.9 mm H = 95.6 mm D = 73.7 mm |
| Weight | 580 g (Body only) 665 g (With battery & memory card) | 572 g (Body only) 657 g (With battery & memory card) |
| Timelapse Recording | Yes (Built-in Feature) | Yes (Built-in Feature) |
| Other Features | Real-time Eye AF, Real-Time Eye AF for animals, Save / Load Settngs, Real-time Eye AF for Movie Shooting | Real-time Eye AF, Real-Time Eye AF for animals |