Upgrade Guide

Sony FX3→Sony A7R VI

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

You own

Sony

FX3

£3799

2021

→

Upgrade to

Sony

A7R VI

£4399 (+£600)

2025

✅

Worthwhile

Clear improvements over the FX3. Whether it justifies the cost depends on which upgrades matter most to your shooting.

What's new in the A7R VI

Unchanged or similar

Suitability by genre

Full spec comparison

Spec	FX3	A7R VI
Price	£3,799	£4,399
Released	2021	2025	↑
Sensor	12.1MP full-frame BSI Exmor R CMOS (same as A7S III)	61MP full-frame stacked back-illuminated CMOS
Resolution	12MP	61MP	↑
Video	4K/120p, 4K/60p 10-bit, 12-bit RAW output, S-Log3, S-Cinetone	8K 30fps, 4K 120fps oversampled
Autofocus	Real-time tracking with subject recognition (human, animal)	AI processing unit — subject recognition for people, animals, birds and vehicles across the frame
Stabilisation	5-axis IBIS — 5 stops	In-body 5-axis IS, up to 8.5 stops
Burst Rate	10fps mechanical, 10fps electronic	8fps mechanical / 7fps electronic with full AF/AE tracking	↓
Battery Life	~640 shots (CIPA)	~530 shots (CIPA, NP-FZ100)	↓
Weight	715g body only (with XLR handle)	723g (body with battery and card)	↓
Weather Sealed	Yes	Yes
Viewfinder	None — monitor/external EVF use only	EVF, 9.44M-dot, up to 120fps
Screen	3.0" touchscreen, fully articulating	3.2-inch 4-axis multi-angle touchscreen, 3.69M-dot
Mount	Sony FE mount (full-frame E-mount)	Sony FE (full-frame E-mount)
Memory Cards	Dual CFexpress Type A / SD UHS-II slots	Dual slots — CFexpress Type A / SD (UHS-II)

Compare side-by-side

See FX3 and A7R VI next to each other with our interactive comparison tool.

Get a personalised upgrade score

Tell us what you shoot and we'll score the A7R VI against your specific genres — not just specs.

Other upgrades from the FX3

Related buying guides

Camera family history