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Canon - EOS R1 vs Canon - EOS R5 Mark II

Last updated · How Mars Score works
EOS R1CANONRENDER
Probe A
Canon
EOS R1
46.0/ 100D
Sensor46· 35%
Video—· 25%
Autofocus—· 20%
Body & Controls—· 20%
EOS R5 Mark IICANONRENDER
Probe B
Canon
EOS R5 Mark II
61.1/ 100C
Sensor61· 35%
Video—· 25%
Autofocus—· 20%
Body & Controls—· 20%
Quick verdict

Between the EOS R1 and EOS R5 Mark II, the EOS R1 comes out ahead in several specs, while the EOS R5 Mark II wins on weight and megapixels. Overall, the EOS R1 scores 46 and the EOS R5 Mark II scores 61.1 on our Mars Score.

Buying advice

Which should you buy?

The EOS R5 Mark II is the clear pick on raw spec strength, leading by 15.1 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.

The EOS R1 doesn't pull ahead on any single popular-comparison spec — its strengths sit in the spec table groups rather than the headline advantages.

Pick the EOS R5 Mark II if you carry the device everywhere and weight or thickness has been the deciding factor before. Its strongest claims are weight, megapixels, max video.

Both ship with comparable sensor size, in-body stabilization, af points, so those specs don't separate the two — focus on the differences below.

Bottom line: the EOS R5 Mark II is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.

Why Canon - EOS R1 wins

  • No decisive advantages.

Why Canon - EOS R5 Mark II wins

  • ▲Weight — 369.00 g less. 746 vs 1115.
  • ▲Megapixels — 87.50% more. 45 MP vs 24 MP.
  • ▲Max video: 8K (vs 6K).
Full readout

Spec comparison

Sensor

SpecCanon - EOS R1Canon - EOS R5 Mark II
Sensor sizeⓘFull FrameFull Frame
Megapixels24 MP45 MPlead
Max ISO204800lead102400

Video

SpecCanon - EOS R1Canon - EOS R5 Mark II
Max video6K8Klead
RAW videotruetrue
Log profileⓘtruetrue

Autofocus

SpecCanon - EOS R1Canon - EOS R5 Mark II
AF pointsⓘ10531053
Eye AFⓘtruetrue
In-body stabilizationⓘtruetrue

Body & Controls

SpecCanon - EOS R1Canon - EOS R5 Mark II
Weight1115 g746 glead
Weather sealedⓘtruetrue
Dual card slotsⓘtruetrue
Drill down

Spec-level deep dives

Sensor size→Megapixels→Max ISO→Max video→RAW video→Log profile→AF points→Eye AF→In-body stabilization→Weight→Weather sealed→Dual card slots→
By manufacturer

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