Decision tools · Compare
S1R II vs FX3
Quick take: The S1R II has the highest resolution at 44MP; the S1R II is the most affordable.
16 specs side by side·15 genres scored·UK prices from Wex Photo Video and Clifton Cameras
How to read this page. Highlighted cells win that row on the spec alone. Genre scores are the engine's base scores (enthusiast, photo and video); Camera Match re-weights them for your level and priorities. Price buttons are affiliate links; the price you pay is the same.
Sony
FX3 2021
Best for Professional video, documentary & cinematic filmmaking
£3579
new today at Clifton Cameras
Price buttons are affiliate links — GearFrame may earn a commission at no extra cost to you. It never affects a score. Learn more
Verdictwhich should you buy?
FX3 — Professional Video, Documentary & Cinematic Filmmaking: The definitive run-and-gun cinema camera — A7S III sensor quality in a body built specifically for video professionals.
Who should buy what
FX3 (2021)
is the right camera for you if…
- Professional videographers and filmmakers who need cinema-quality colour science in a compact body
- Documentary and run-and-gun shooters who need 4K/120p and built-in XLR audio
- Sony A7S III owners who want a purpose-built video body alongside their stills camera
- Gimbal and drone operators who need a compact full-frame cinema camera
Full specificationsthe better value in each row is highlighted
| Specification | S1R IILumix · 2025 | FX3Sony · 2021 |
|---|---|---|
| Price | £2,699Best | £3,579 |
| Sensor | 44.3MP full-frame BSI CMOS | 12.1MP full-frame BSI Exmor R CMOS (same as A7S III) |
| Resolution | 44.3MPBest | 12.1MP |
| Video | 8K/30p (first for Lumix), 4K/120p (1.1x crop), 10-bit | 4K/120p, 4K/60p 10-bit, 12-bit RAW output, S-Log3, S-Cinetone |
| Autofocus | Phase-hybrid AF (779 points) with AI subject detection | Real-time tracking with subject recognition (human, animal) |
| Stabilisation | 8-stop IBIS with Dual I.S. 2 | 5-axis IBIS — 5 stops |
| Burst Rate | 40fps electronicBest | 10fps mechanical, 10fps electronic |
| Battery Life | 350 shots (CIPA, LCD) | ~640 shots (CIPA)Best |
| Weight | 820g (with battery and card) | 715g (body only)Best |
| Dimensions | — | 129.7 × 78.0 × 84.5mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF, 5.76M dots | None — monitor/external EVF use only |
| Screen | Fully articulating touchscreen | 3.0" touchscreen, fully articulating |
| Mount | L-mount | Sony FE mount (full-frame E-mount) |
| Memory Cards | CFexpress Type B + SD (UHS-II) | Dual CFexpress Type A / SD UHS-II slots |
| Connectivity | USB-C, full-size HDMI, Wi-Fi, Bluetooth | USB-C (10Gbps), full-size HDMI, XLR via handle, Bluetooth, Wi-Fi |
Wins the row — price, resolution, burst, battery, weight and sealing are compared; text specs aren't ranked.
How they score by genreengine base scores out of 10
Genre
S1R II
FX3
Portrait
8.8/10
5.7/10
Street
6.3/10
4.3/10
Travel
6.2/10
5.6/10
Wedding & Events
8.4/10
6.0/10
Vlogging & Video
6.1/10
6.2/10
Filmmaking
7.7/10
9.1/10
Documentary
7.9/10
8.0/10
Sports & Action
8.3/10
5.5/10
Landscape
7.7/10
4.7/10
Wildlife
8.3/10
5.8/10
Casual
5.2/10
4.8/10
Food
8.3/10
6.7/10
Macro
8.8/10
5.5/10
Architecture
8.1/10
5.2/10
Astrophotography
7.1/10
6.7/10
Scores come from the same engine as Camera Match: verified specifications weighted by what each genre needs, with documented adjustments. The product page and this table show the enthusiast base score. See how scores are calculated →
Next
More comparisons with S1R II
Camera family history