Upgrade Guide

Canon EOS R100→Canon EOS R6 Mark III

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

You own

Canon

EOS R100

£529

2023

→

Upgrade to

Canon

EOS R6 Mark III

£2799 (+£2,270)

2025

✅

Worthwhile

Clear improvements over the EOS R100. Whether it justifies the cost depends on which upgrades matter most to your shooting.

What's new in the EOS R6 Mark III

↑

Resolution

32MP vs 24MP (+8MP)
↑

Weather sealing

Added — fully sealed body
↑

Burst rate

40fps (electronic shutter), 12fps (mechanical) vs 6.5fps mechanical
↑

Battery life

~580 shots (CIPA, LP-E6P) vs ~270 shots (CIPA)
↑

Generation

2 years newer (2025 vs 2023)

Unchanged or similar

Suitability by genre

Full spec comparison

Spec	EOS R100	EOS R6 Mark III
Price	£529	£2,799
Released	2023	2025	↑
Sensor	24.1MP APS-C CMOS	32.5MP full-frame stacked CMOS
Resolution	24MP	32MP	↑
Video	4K/30p (slight crop), 1080p/60p	4K 60fps oversampled from 7K, 6K RAW internal
Autofocus	Dual Pixel CMOS AF, face detection, subject tracking	Dual Pixel CMOS AF II — deep-learning subject detection for people, animals and vehicles, up to 40fps tracking
Stabilisation	None (no IBIS)	In-body 5-axis IS, up to 8.5 stops
Burst Rate	6.5fps mechanical	40fps (electronic shutter), 12fps (mechanical)	↑
Battery Life	~270 shots (CIPA)	~580 shots (CIPA, LP-E6P)	↑
Weight	356g (body, battery, card)	670g (body with battery and card)	↓
Weather Sealed	No	Yes	↑
Viewfinder	EVF, 2.36M dots, 0.59× magnification	EVF, 5.76M-dot, up to 120fps
Screen	3.0" fixed touchscreen, 1.04M dots	3.2-inch vari-angle touchscreen, 2.1M-dot
Mount	Canon RF-mount	Canon RF
Memory Cards	Single SD UHS-II	Dual SD / SDHC / SDXC (UHS-II)

Compare side-by-side

See EOS R100 and EOS R6 Mark III next to each other with our interactive comparison tool.

Get a personalised upgrade score

Tell us what you shoot and we'll score the EOS R6 Mark III against your specific genres — not just specs.

Other upgrades from the EOS R100

Related buying guides

Camera family history