Canon
EOS 90D
High-res APS-C DSLR with 32.5MP, 10fps, and excellent Dual Pixel AF for wildlife.
$1,199
Released Aug 2019
Canon
EOS R6 Mark III
Hybrid 32.5MP full-frame RF body with 7K RAW video, 40fps electronic burst, 8.5-stop IBIS, and Dual Pixel CMOS AF II.
$2,799
Released Nov 2025
EOS R6 Mark III is 6.2 years newer.
Wins
EOS 90D
Wins
EOS R6 Mark III
6 categories tied
TL;DR — Key differences
- BEOS R6 Mark III has higher AF points / zones (1053 vs 45)
- BEOS R6 Mark III has higher Max video bit rate (2600 Mbps vs 150 Mbps)
- BEOS R6 Mark III has higher Burst (electronic) (40 fps vs 10 fps)
- BEOS R6 Mark III has higher 4K max frame rate (120 fps vs 30 fps)
- BEOS R6 Mark III has higher ISO max (native) (64,000 vs 25,600)
Key specs at a glance
Size and weight, to scale
EOS 90D
138 × 98 × 88 mm
520 g (1.15 lb / 18.34 oz)
EOS R6 Mark III
138 × 98 × 88 mm
699 g (1.54 lb / 24.66 oz)
EOS 90D and EOS R6 Mark III share virtually identical body dimensions.
EOS 90D is 179 g lighter than EOS R6 Mark III.
Depth (front-to-back): 88mm EOS 90D · 88mm EOS R6 Mark III
Back view, to scale
Width × Height — same proportions as the front of the body.
EOS 90D
138 × 98 mm
EOS R6 Mark III
138 × 98 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
EOS 90D
138 × 88 mm
EOS R6 Mark III
138 × 88 mm
Sensor size, to scale
EOS 90D
22.3 × 14.8 mm · APS-C
330 mm² area
EOS R6 Mark III
35.9 × 23.9 mm · Full Frame
858 mm² area
2.6× larger sensor area = shallower depth of field and better low-light performance.
Lens ecosystem
Native lens selection
EOS 90D
✓ more lensesCanon EF
300+
native lenses available
EOS R6 Mark III
Canon RF
105+
native lenses available
Counts include current first-party and major third-party native autofocus lenses.
Use-case scoring
Which one for what?
Algorithmic scores from verified specs · 10 = best in class
Why pick one over the other
Reasons to choose
EOS 90D
Subject recognition
Adds Human, Animal, Bird…
Dimensions (W×H×D mm)
Adds 138, 98, 88
Weight
520 g vs 699 g — lower is better
EVF magnification
0.78 × vs 0.76 × — higher is better
Reasons to choose
EOS R6 Mark III
AF low-light limit
-6.5 EV vs -3 EV — lower is better
Subject recognition
Adds People, Dogs, Cats…
Dimensions (W×H×D mm)
Adds 138.4, 98.4, 88.4
AF points / zones
1053 vs 45 — higher is better
Max video bit rate
2600 Mbps vs 150 Mbps — higher is better
Codecs
Adds CRM, XF-HEVC S, XF-AVC S…
Burst (electronic)
40 fps vs 10 fps — higher is better
4K max frame rate
120 fps vs 30 fps — higher is better
Both cameras share
- ✓Resolution — Both 32.5 MP
- ✓AA filter — Both support aa filter
- ✓ISO min (native) — Both 100
- ✓AF frame coverage — Both 100 %
- ✓Eye AF — Both support eye af
- ✓Pre-Capture / Pre-Release — Both support pre-capture / pre-release
Pros & cons at a glance
Editorially curated highlights and trade-offs.
EOS 90D
Pros
- ✓32.5MP APS-C
- ✓10fps burst
- ✓Optical viewfinder
- ✓Long battery life
Cons
- –DSLR declining
- –No IBIS
- –Crop sensor
EOS R6 Mark III
Pros
- ✓32.5MP full-frame sensor
- ✓7K RAW video & 4K 120p
- ✓40fps electronic burst with Pre-Continuous
- ✓8.5-stop IBIS
Cons
- –Single CFexpress Type B + SD slot
- –Smaller LCD than R5 II
- –LP-E6P required for full features
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for sports, EOS 90D or EOS R6 Mark III?
EOS R6 Mark III scores 8.5/10 versus 5.0/10 for EOS 90D — 40fps burst — pro-level action capture.
What's the resolution difference between the EOS 90D and EOS R6 Mark III?
Both cameras share the same 32.5 MP resolution.
Do the EOS 90D and EOS R6 Mark III have in-body image stabilization?
EOS 90D has 6-stop in-body image stabilization, while eOS R6 Mark III has 8.5-stop in-body image stabilization.
Which shoots faster bursts — the EOS 90D or the EOS R6 Mark III?
EOS 90D reaches 10 fps electronic. EOS R6 Mark III reaches 40 fps electronic.
What's the weight difference between the EOS 90D and EOS R6 Mark III?
EOS 90D weighs 520 g and EOS R6 Mark III weighs 699 g, so the EOS 90D is 179 g lighter.
Do the EOS 90D and EOS R6 Mark III record 4K video?
EOS 90D: 4K up to 30p. EOS R6 Mark III: 4K up to 120p.
Are the EOS 90D and EOS R6 Mark III weather sealed?
EOS 90D: Yes. EOS R6 Mark III: Yes.
Which has better battery life?
Rated battery life is 640 shots (CIPA) for the EOS 90D and 640 shots for the EOS R6 Mark III, giving the EOS R6 Mark III the edge.
How much does each cost?
EOS 90D launched at $1,199 and EOS R6 Mark III at $2,799. The EOS 90D is $1,600 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Canon press materials.