Sony FX3 is $4,298 with a 12.1MP sensor and a 715g body; A7R IV is $3,699 with a 61MP sensor and a 665g body.
▶ Compare these interactively| Spec | FX3 | A7R IV |
|---|---|---|
| Price (USD RRP) | $4,298 | $3,699 |
| Announced | 2021 | 2019 |
| Sensor | 12.1 MP Full-frame BSI CMOS | 61 MP Full-frame BSI CMOS |
| Processor | BIONZ XR | BIONZ X |
| In-body stabilization | Yes (5.5 stops) | Yes (5.5 stops) |
| Max burst | 10 fps | 10 fps |
| Max video | 4K / 120P | 4K / 30P |
| Weather sealed | Yes | Yes |
| Weight | 715 g | 665 g |
| Battery (CIPA) | 600 shots | 670 shots |
| Card slots | 2× CFexpress Type A / SD UHS-II | 2× SD UHS-II |
| Lens mount | Interchangeable | Interchangeable |
Prices shown are approximate manufacturer list prices (RRP) in USD and may differ from live retail prices.