Decision tools · Compare
A7C vs FX3
Quick take: The A7C has the highest resolution at 24MP; the A7C 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
£2999
new today at Wex Photo Video
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Verdictwhich should you buy?
A7C — Compact Travel & Content Creation: The A7C proves full-frame doesn't have to be bulky. Excellent battery life, reliable Eye AF and a vari-angle screen in a pocketable body is a compelling combination for travel and content creators. The A7C II improved on it, but the original remains a strong value 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
A7C (2020)
is the right camera for you if…
- Travel photographers who want full-frame in the smallest possible body
- Content creators who need a flip screen and reliable Eye AF
- Photographers upgrading from APS-C who want to keep a compact kit
- Vloggers who need 4K and great battery life on the road
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 | A7CSony · 2020 | FX3Sony · 2021 |
|---|---|---|
| Price | £1,699Best | £2,999 |
| Sensor | 24.2MP Full-Frame Exmor R BSI CMOS | 12.1MP full-frame BSI Exmor R CMOS (same as A7S III) |
| Resolution | 24.2MPBest | 12.1MP |
| Video | 4K/30p (oversampled), 1080p/120p slow-motion, S-Log2/S-Log3 | 4K/120p, 4K/60p 10-bit, 12-bit RAW output, S-Log3, S-Cinetone |
| Autofocus | Phase-detect, 693 points, real-time Eye AF & animal AF | Real-time tracking with subject recognition (human, animal) |
| Stabilisation | 5-axis IBIS, 5 stops | 5-axis IBIS — 5 stops |
| Burst Rate | 10fps with AF/AE tracking | 10fps mechanical, 10fps electronic |
| Battery Life | ~740 shots (CIPA) — outstanding for a Sony mirrorlessBest | ~640 shots (CIPA) |
| Weight | 509g (with battery and card)Best | 715g (body only) |
| Dimensions | 124.0 × 71.1 × 59.7mm | 129.7 × 78.0 × 84.5mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | None built-in — use rear screen or accessory EVF | None — monitor/external EVF use only |
| Screen | 3.0" vari-angle touchscreen, 921k dots | 3.0" touchscreen, fully articulating |
| Mount | Sony E-mount | Sony FE mount (full-frame E-mount) |
| Memory Cards | Single SD UHS-II | Dual CFexpress Type A / SD UHS-II slots |
| Connectivity | USB-C (USB 3.2 Gen 2), Wi-Fi, Bluetooth, NFC | 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
A7C
FX3
Portrait
7.5/10
5.7/10
Street
7.5/10
4.3/10
Travel
7.0/10
5.5/10
Wedding & Events
6.5/10
6.0/10
Vlogging & Video
5.7/10
6.1/10
Filmmaking
6.6/10
9.1/10
Documentary
7.0/10
8.0/10
Sports & Action
6.9/10
5.5/10
Landscape
6.5/10
4.7/10
Wildlife
7.6/10
5.8/10
Casual
5.4/10
4.9/10
Food
7.1/10
6.7/10
Macro
6.1/10
5.5/10
Architecture
6.3/10
5.2/10
Astrophotography
7.6/10
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 →
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