Sony FX3
full-frame · 2021
Canon EOS R5 Mark II
45 MP stacked · 8K60 RAW · AI detection
Canon EOS R5 Mark II takes it — here’s why.
In our weighted Specdex score, Sony FX3 lands at 90 and Canon EOS R5 Mark II at 95. That puts Canon EOS R5 Mark II ahead by 5 points — a decisive margin driven mostly by its strengths in the categories below.
Pick Sony FX3 if…
- ✓Current-gen AF system
- ✓Proven lens ecosystem
- ✓Strong video + stills balance
Pick Canon EOS R5 Mark II if…
- ✓8K 60p RAW internal recording
- ✓Next-gen AI subject detection (5,850 AF points, 100% coverage)
- ✓Up to 30 fps electronic burst
Winner by scenario
Derived from the sub-score breakdown · not a separate testPhoto
Canon EOS R5 Mark IICompared on the photo sub-score
Canon EOS R5 Mark II leads on photo (96 vs 90).
Autofocus
Canon EOS R5 Mark IICompared on the autofocus sub-score
Canon EOS R5 Mark II leads on autofocus (98 vs 88).
Video
Canon EOS R5 Mark IICompared on the video sub-score
Canon EOS R5 Mark II leads on video (96 vs 86).
Value for money
TieSpecdex score per dollar at MSRP
Effectively tied — similar score-per-dollar at MSRP.
Score breakdown
Specs side-by-side
| Spec | Sony FX3 | Canon EOS R5 Mark II |
|---|---|---|
| Format | full-frame | — |
| Release year | 2021 | — |
| Sensor | — | 45 MP BSI stacked CMOS |
| Mount | — | Canon RF |
| Burst | — | 12 fps mechanical / 30 fps electronic |
| Video | — | 8K 60p RAW · 4K 120p |
| AF | — | 5,850 user-selectable points, 100% coverage |
| ISO | — | 100–51200 (exp. 50–102400) |
| Stabilization | — | 5-axis IBIS |
Sony FX3
- +Current-gen AF system
- +Proven lens ecosystem
- +Strong video + stills balance
- −Body price excludes lens
- −Heavy for travel (flagship)
- −Learning curve on menus
Canon EOS R5 Mark II
- +8K 60p RAW internal recording
- +Next-gen AI subject detection (5,850 AF points, 100% coverage)
- +Up to 30 fps electronic burst
- −Price jumped from R5
- −Body heats in extended 8K recording
- −Battery life modest
FAQ: Sony FX3 vs Canon EOS R5 Mark II
Which is better, Sony FX3 or Canon EOS R5 Mark II? +
Canon EOS R5 Mark II scores 95 on our weighted rubric — ahead by 5. Your best pick depends on the sub-scores above.
Is Sony FX3 worth the price? +
At $3,898, Sony FX3 delivers a Specdex score of 90 — strongest in photo.
Is Canon EOS R5 Mark II worth the price? +
At $4,299, Canon EOS R5 Mark II delivers a Specdex score of 95 — strongest in autofocus.
Does Sony FX3 or Canon EOS R5 Mark II last longer? +
Based on our long-term update and support ratings, both ship with multi-year support. Battery and reliability scores are visible in the breakdown above.
Which is better for photo, Sony FX3 or Canon EOS R5 Mark II? +
Canon EOS R5 Mark II — leads on photo (96 vs 90). Compared on the photo sub-score.
Which is better for autofocus, Sony FX3 or Canon EOS R5 Mark II? +
Canon EOS R5 Mark II — leads on autofocus (98 vs 88). Compared on the autofocus sub-score.