What matters
Both are compact full-frame bodies for stills and hybrid shooting, with one UHS-II SD card slot and an electronic viewfinder. The useful split is not basic camera class but what you carry, stabilize, and recharge around the body.
Key differences
- The EOS R8 pairs a 24.2 MP sensor with a 461 g operating weight and no sensor-shift in-body stabilization. It is 53 g lighter, so it is easier to carry and leaves more room in the budget for lenses, but handheld low-light work depends more on lens stabilization or other shooting support.
- The A7C II combines 33.0 MP, five-axis in-body stabilization, and a 514 g operating weight. Unstabilized primes and slower handheld shutter speeds gain a practical advantage, with more capture resolution at the cost of a heavier body.
- The EOS R8's LP-E17 system is rated for about 290 still images using the screen under the cited normal-power condition. Sony's NP-FZ100 figure is about 530 through the viewfinder or 560 through the screen, so long events and travel favor fewer battery changes on the A7C II, while R8 owners should plan for spares.
Who it is for
- Choose the EOS R8 if its USD 1,499 body price and lower carry weight outweigh stabilization and endurance. Canon's official page showed it backordered when checked.
- Choose the A7C II if 33.0 MP, in-body stabilization, and the larger-battery system justify its USD 2,099.99 body price and extra weight. The observed body-price difference was USD 600.99, but stock conditions were not equivalent.
Watch-outs
- Official still-image ratings are mode-specific estimates, not field-runtime guarantees; settings, temperature, lens choice, and video use can change the result.
- Lenses, spare batteries, chargers, and switching between RF and E-mount systems can cost more than the body-price difference.
- Buy neither if you require dual card slots or the integrated controls of a larger professional body.