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EOS-1Ds vs EOS R6 Mark III

Quick take: The EOS R6 Mark III has the highest resolution at 32MP; the EOS-1Ds is the most affordable.

16 specs side by side·15 genres scored·UK prices from Wex Photo Video and Clifton Cameras

How to read this page. Highlighted cells win that row on the spec alone. Genre scores are the engine's base scores (enthusiast, photo and video); Camera Match re-weights them for your level and priorities. Price buttons are affiliate links; the price you pay is the same.

Price buttons are affiliate links — GearFrame may earn a commission at no extra cost to you. It never affects a score. Learn more

Verdictwhich should you buy?

EOS-1Ds — Full-Frame Dslr History & Canon Archive Collections: The world's first production full-frame DSLR — the EOS-1Ds arrived in 2002 with 11MP and changed professional photography forever. Historically irreplaceable.

EOS R6 Mark III — Hybrid Photo & Video Professionals, Sports And Wildlife Shooters: The EOS R6 Mark III takes everything that made the Mark II a hybrid favourite and pushes it further — a faster stacked sensor, smarter autofocus, and genuinely professional video specs. It's the most complete all-rounder in Canon's RF full-frame lineup, sitting just below the R5 II in resolution while matching it for speed.

Who should buy what
EOS-1Ds (2002)
is the right camera for you if…
  • Collectors and historians of professional digital photography
  • Canon archivists who want the full EOS-1 lineage represented
  • Photography educators documenting the full-frame transition
EOS R6 Mark III (2025)
is the right camera for you if…
  • Working photographers who need a single body for both stills and serious video work
  • Sports and wildlife shooters who need 40fps burst shooting with reliable subject tracking
  • Hybrid content creators producing 4K and 6K footage alongside high-resolution stills
  • Enthusiasts upgrading from the EOS R6 Mark II who want faster AF and more resolution
Full specificationsthe better value in each row is highlighted
Specification EOS-1DsCanon · 2002EOS R6 Mark IIICanon · 2025
Price £200Best£2,799
Sensor 11.1MP full-frame CMOS32.5MP full-frame stacked CMOS
Resolution 11.1MP32.5MPBest
Video —4K 60fps oversampled from 7K, 6K RAW internal
Autofocus 45-point AF with 7 cross-type pointsDual Pixel CMOS AF II — deep-learning subject detection for people, animals and vehicles, up to 40fps tracking
Stabilisation —In-body 5-axis IS, up to 8.5 stops
Burst Rate 3fps continuous40fps (electronic shutter), 12fps (mechanical)Best
Battery Life ~500 shots per charge~580 shots (CIPA, LP-E6P)Best
Weight 1270g (body only)609g (body only)Best
Dimensions 155.6 × 117.8 × 79.9mm138.4 × 98.4 × 88.4mm
Weather Sealed YesYes
Viewfinder OVF, 0.70× magnification, 100% coverageEVF, 5.76M-dot, up to 120fps
Screen 2.0" fixed LCD3.2-inch vari-angle touchscreen, 2.1M-dot
Mount Canon EFCanon RF
Memory Cards CompactFlash Type I/IIDual SD / SDHC / SDXC (UHS-II)
Connectivity USB 1.1, FireWireUSB-C, Wi-Fi 6, Bluetooth 5.0, 2.5GbE

Wins the row — price, resolution, burst, battery, weight and sealing are compared; text specs aren't ranked.

How they score by genreengine base scores out of 10
Genre
EOS-1Ds
EOS R6 Mark III
Portrait
5.1/10
8.7/10
Street
3.6/10
6.7/10
Travel
3.5/10
6.7/10
Wedding & Events
4.6/10
8.6/10
Documentary
3.6/10
8.2/10
Sports & Action
4.4/10
8.5/10
Landscape
4.2/10
7.0/10
Wildlife
5.0/10
8.5/10
Casual
1.9/10
5.5/10
Food
3.5/10
8.2/10
Macro
3.2/10
8.7/10
Architecture
4.0/10
7.2/10
Astrophotography
5.7/10
6.7/10
Vlogging & Video
—
6.3/10
Filmmaking
—
7.6/10

Scores come from the same engine as Camera Match: verified specifications weighted by what each genre needs, with documented adjustments. The product page and this table show the enthusiast base score. See how scores are calculated →

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