Sony FX3
full-frame · 2021
Sony Alpha 7 IV
33 MP full-frame · 4K60 · Hybrid
Sony Alpha 7 IV takes it — here’s why.
In our weighted Specdex score, Sony FX3 lands at 90 and Sony Alpha 7 IV at 92. That puts Sony Alpha 7 IV ahead by 2 points — a narrow 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 Sony Alpha 7 IV if…
- ✓Great hybrid stills + video
- ✓Excellent AF with Real-time Tracking
- ✓Dual card slots
Winner by scenario
Derived from the sub-score breakdown · not a separate testPhoto
Sony Alpha 7 IVCompared on the photo sub-score
Sony Alpha 7 IV leads on photo (94 vs 90).
Autofocus
Sony Alpha 7 IVCompared on the autofocus sub-score
Sony Alpha 7 IV leads on autofocus (96 vs 88).
Video
Sony Alpha 7 IVCompared on the video sub-score
Sony Alpha 7 IV leads on video (90 vs 86).
Value for money
Sony Alpha 7 IVSpecdex score per dollar at MSRP
Sony Alpha 7 IV more score per dollar ($2,498 vs $3,898).
Score breakdown
Specs side-by-side
| Spec | Sony FX3 | Sony Alpha 7 IV |
|---|---|---|
| Format | full-frame | — |
| Release year | 2021 | — |
| Sensor | — | 33 MP Exmor R CMOS |
| Mount | — | Sony E |
| Video | — | 4K60 (Super35), 4K30 full-frame |
| 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
Sony Alpha 7 IV
- +Great hybrid stills + video
- +Excellent AF with Real-time Tracking
- +Dual card slots
- −4K60 is Super 35 crop
- −Menus still dense
- −Heats with long 4K recording
FAQ: Sony FX3 vs Sony Alpha 7 IV
Which is better, Sony FX3 or Sony Alpha 7 IV? +
Sony Alpha 7 IV scores 92 on our weighted rubric — ahead by 2. 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 Sony Alpha 7 IV worth the price? +
At $2,498, Sony Alpha 7 IV delivers a Specdex score of 92 — strongest in autofocus.
Does Sony FX3 or Sony Alpha 7 IV 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 Sony Alpha 7 IV? +
Sony Alpha 7 IV — leads on photo (94 vs 90). Compared on the photo sub-score.
Which is better for autofocus, Sony FX3 or Sony Alpha 7 IV? +
Sony Alpha 7 IV — leads on autofocus (96 vs 88). Compared on the autofocus sub-score.