Upgrade Guide

Sony A7R III→Sony A1

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

You own

Sony

A7R III

£1799

2017

→

Upgrade to

Sony

£5999 (+£4,200)

2021

✅

Worthwhile

Clear improvements over the A7R III. Whether it justifies the cost depends on which upgrades matter most to your shooting.

What's new in the A1

Suitability by genre

Full spec comparison

Spec	A7R III	A1
Price	£1,799	£5,999
Released	2017	2021	↑
Sensor	42.4MP full-frame BSI Exmor R CMOS	50.1MP Full-Frame Stacked BSI CMOS Exmor RS
Resolution	42MP	50MP	↑
Video	4K/30p (full-frame readout), 1080p/120p	8K/30p, 4K/120p, 1080p/240p
Autofocus	399 phase-detect + 425 contrast AF points — real-time Eye AF	Real-time Tracking, AI subject recognition — 759 phase-detect points
Stabilisation	5-axis IBIS — 5.5 stops	IBIS — up to 5.5 stops
Burst Rate	10fps with AF/AE tracking	30fps electronic with full AF/AE	↑
Battery Life	~650 shots (CIPA)	~430 shots (CIPA)	↓
Weight	650g body only	737g (with battery)	↓
Weather Sealed	Yes	Yes
Viewfinder	EVF, 3.69M dots, 0.78× magnification	EVF, 9.44M dots, 0.90× magnification, 240fps
Screen	3.0" touchscreen, tilting	3.0" fully tilting touchscreen
Mount	Sony FE mount (full-frame E-mount)	Sony FE mount (full-frame E-mount)
Memory Cards	Dual SD slots (one UHS-II)	Dual CFexpress Type A / SD UHS-II

Compare side-by-side

See A7R III and A1 next to each other with our interactive comparison tool.

Get a personalised upgrade score

Tell us what you shoot and we'll score the A1 against your specific genres — not just specs.

Other upgrades from the A7R III

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Camera family history