Upgrade Guide

Sony A6100→Sony A7S III

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

You own

Sony

A6100

£549

2019

→

Upgrade to

Sony

A7S III

£2999 (+£2,450)

2020

✅

Worthwhile

Clear improvements over the A6100. Whether it justifies the cost depends on which upgrades matter most to your shooting.

What's new in the A7S III

↑

Weather sealing

Added — fully sealed body
↑

Stabilisation

IBIS added — significant for handheld and video
↑

Battery life

~600 shots (CIPA) / ~70min continuous 4K recording vs 420 shots (CIPA)
↑

Generation

1 year newer (2020 vs 2019)

Unchanged or similar

Suitability by genre

Full spec comparison

Spec	A6100	A7S III
Price	£549	£2,999
Released	2019	2020	↑
Sensor	APS-C Exmor CMOS	12.1MP Full-Frame BSI CMOS (12-bit, back-illuminated)
Resolution	24MP	12MP	↓
Video	4K 30fps	4K/120p 10-bit, 4K/60p 10-bit S-Cinetone/S-Log3, 1080p/240p
Autofocus	425-point phase-detect, real-time tracking	Phase-detect, 759 points, real-time Eye AF (human & animal), subject recognition
Stabilisation	None	5.5-stop IBIS
Burst Rate	11fps	10fps mechanical	↓
Battery Life	420 shots (CIPA)	~600 shots (CIPA) / ~70min continuous 4K recording	↑
Weight	396g (body only)	699g (body, battery, card)	↓
Weather Sealed	No	Yes	↑
Viewfinder	EVF 0.39" 1.44M-dot	OLED EVF, 9.44M dots, 0.90× magnification — best EVF Sony has made
Screen	3.0" tilting touchscreen, 921k-dot	3.0" vari-angle touchscreen, 1.44M dots
Mount	Sony E-Mount	Sony E-mount
Memory Cards	SD UHS-I / Memory Stick	Dual CFexpress Type A / SD UHS-II (both slots)

Compare side-by-side

See A6100 and A7S III next to each other with our interactive comparison tool.

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Other upgrades from the A6100

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Camera family history