Upgrade Guide

Canon EOS-1D Mark III→Canon EOS-1D Mark IV

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

You own

Canon

EOS-1D Mark III

£102 used

2007

→

Upgrade to

Canon

EOS-1D Mark IV

£102 used (+£0)

2009

✅

Worthwhile

Clear improvements over the EOS-1D Mark III. Whether it justifies the cost depends on which upgrades matter most to your shooting.

What's new in the EOS-1D Mark IV

Suitability by genre

Base scores — computed from verified specs for an enthusiast shooting photo and video. The Upgrade Checker adjusts them for your skill level.

Full spec comparison

Spec	EOS-1D Mark III	EOS-1D Mark IV
Price	£102 used	£102 used
Released	2007	2009	↑
Sensor	10.1MP APS-H CMOS	16.1MP APS-H CMOS
Resolution	10MP	16MP	↑
Video	No video	Full HD 1080p/30, 720p/60
Autofocus	45-point phase-detect (19 cross-type + 26 assist) via viewfinder	45-point phase-detect (39 cross-type) via viewfinder; contrast AF with face detection in live view
Stabilisation	No IBIS (lens-based stabilisation only)	No IBIS (lens-based stabilisation only)
Burst Rate	10fps	10fps
Battery Life	~2200 shots (CIPA)	~1500 shots (CIPA)	↓
Weight	1155g (body only)	1180g (body only)	↓
Weather Sealed	Not weather sealed	Not weather sealed
Viewfinder	Optical pentaprism, 100% coverage, 0.76x	Optical pentaprism, 100% coverage, 0.76x
Screen	3.0" fixed LCD, 230k dots	3.0" fixed LCD, 920k dots
Mount	Canon EF	Canon EF
Memory Cards	Dual slots: CompactFlash + SD	Dual slots: CompactFlash + SD

Compare side-by-side

See EOS-1D Mark III and EOS-1D Mark IV 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-1D Mark IV against your specific genres — not just specs.

Other upgrades from the EOS-1D Mark III

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Camera family history