Upgrade Guide

Sony A6400→Sony A7R VI

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

You own

Sony

A6400

£899

2019

→

Upgrade to

Sony

A7R VI

£4399 (+£3,500)

2025

✅

Worthwhile

Clear improvements over the A6400. 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	A6400	A7R VI
Price	£899	£4,399
Released	2019	2025	↑
Sensor	24.2MP APS-C Exmor CMOS BSI	61MP full-frame stacked back-illuminated CMOS
Resolution	24MP	61MP	↑
Video	4K/30p (6K oversampled, no crop), 1080p/120p slow-motion	8K 30fps, 4K 120fps oversampled
Autofocus	Phase-detect, 425 points, real-time Eye AF & animal AF	AI processing unit — subject recognition for people, animals, birds and vehicles across the frame
Stabilisation	None (no IBIS)	In-body 5-axis IS, up to 8.5 stops
Burst Rate	11fps mechanical, 8fps with AF tracking	8fps mechanical / 7fps electronic with full AF/AE tracking	↓
Battery Life	~410 shots (CIPA)	~530 shots (CIPA, NP-FZ100)	↑
Weight	403g (body, battery, card)	723g (body with battery and card)	↓
Weather Sealed	No	Yes	↑
Viewfinder	EVF, 2.36M dots, 0.70× magnification	EVF, 9.44M-dot, up to 120fps
Screen	3.0" tilting touchscreen, 180° flip for selfie/vlog, 921k dots	3.2-inch 4-axis multi-angle touchscreen, 3.69M-dot
Mount	Sony E-mount	Sony FE (full-frame E-mount)
Memory Cards	Single SD UHS-I	Dual slots — CFexpress Type A / SD (UHS-II)

Compare side-by-side

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