Upgrade Guide

Sony A7C II→Sony FX3

Is it worth upgrading? Spec analysis, key improvements, and our verdict.

You own

Sony

A7C II

£1499

2023

→

Upgrade to

Sony

FX3

£3799 (+£2,300)

2021

✅

Worthwhile

Clear improvements over the A7C II. Whether it justifies the cost depends on which upgrades matter most to your shooting.

What's new in the FX3

Unchanged or similar

Suitability by genre

Full spec comparison

Spec	A7C II	FX3
Price	£1,499	£3,799
Released	2023	2021	↓
Sensor	33MP Full-frame Exmor R BSI CMOS	12.1MP full-frame BSI Exmor R CMOS (same as A7S III)
Resolution	33MP	12MP	↓
Video	4K/60p oversampled, S-Log3, 10-bit internal	4K/120p, 4K/60p 10-bit, 12-bit RAW output, S-Log3, S-Cinetone
Autofocus	759-point phase-detect, AI subject recognition	Real-time tracking with subject recognition (human, animal)
Stabilisation	5-axis IBIS, 7.0 stops	5-axis IBIS — 5 stops
Burst Rate	10fps mechanical, 30fps electronic	10fps mechanical, 10fps electronic
Battery Life	~530 shots (CIPA)	~640 shots (CIPA)	↑
Weight	514g body only	715g body only (with XLR handle)	↓
Weather Sealed	No	Yes	↑
Viewfinder	EVF, 2.36M dots, 0.70× magnification	None — monitor/external EVF use only
Screen	3.0" vari-angle touchscreen	3.0" touchscreen, fully articulating
Mount	Sony FE (full-frame E-mount)	Sony FE mount (full-frame E-mount)
Memory Cards	Dual slots: SD UHS-II + CFexpress Type A	Dual CFexpress Type A / SD UHS-II slots

Compare side-by-side

See A7C II and FX3 next to each other with our interactive comparison tool.

Get a personalised upgrade score

Tell us what you shoot and we'll score the FX3 against your specific genres — not just specs.

Other upgrades from the A7C II

Related buying guides

Camera family history