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
Launch priceReleased Nov 2025
Ricoh
GR III
Street photography icon with 24.24MP APS-C, 28mm equivalent GR lens, 3-axis SR, and snap-focus in a pocket body.
$899
Launch priceReleased Mar 2019
EOS R6 Mark III is 6.7 years newer.
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Wins
EOS R6 Mark III
Wins
GR III
1 categories tied
Which would you choose?
TL;DR — Key differences
- AEOS R6 Mark III has higher AF points / zones (1053 vs 49)
- AEOS R6 Mark III has higher Burst (electronic) (40 fps vs 4 fps)
- AEOS R6 Mark III has higher Battery life (CIPA) (640 shots vs 200 shots)
- AEOS R6 Mark III has higher Burst (mechanical) (12 fps vs 4 fps)
- AEOS R6 Mark III has higher 1080p max frame rate (180 fps vs 60 fps)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to share
EOS R6 Mark III
138 × 98 × 88 mm
699 g (1.54 lb / 24.66 oz)
Credit card
85.6 × 54 mm
for scale
GR III
109 × 62 × 33 mm
257 g (0.57 lb / 9.07 oz)
EOS R6 Mark III is 29mm wider, 37mm taller, and 55mm thicker than GR III.
EOS R6 Mark III is 442 g heavier than GR III.
Depth (front-to-back): 88mm EOS R6 Mark III · 33mm GR III
Back view, to scale
Width × Height — same proportions as the front of the body.
EOS R6 Mark III
138 × 98 mm
Credit card
85.6 × 54 mm
GR III
109 × 62 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
EOS R6 Mark III
138 × 88 mm
Credit card
85.6 × 54 mm
GR III
109 × 33 mm
Sensor size, to scale
EOS R6 Mark III
35.9 × 23.9 mm · Full Frame
858 mm² area
GR III
23.5 × 15.6 mm · APS-C
367 mm² area
2.3× larger sensor area = shallower depth of field and better low-light performance.
Lens ecosystem
Native lens selection
EOS R6 Mark III
✓ more lensesCanon RF
105+
native lenses available
GR III: mount data unavailable
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 R6 Mark III
Subject recognition
Adds People, Dogs, Cats…
Codecs
Adds CRM, XF-HEVC S, XF-AVC S…
Dimensions (W×H×D mm)
Adds 138.4, 98.4, 88.4
Card types
Adds CFexpress Type B, SD UHS-II
AF points / zones
1053 vs 49 — higher is better
Burst (electronic)
40 fps vs 4 fps — higher is better
Battery life (CIPA)
640 shots vs 200 shots — higher is better
Burst (mechanical)
12 fps vs 4 fps — higher is better
Reasons to choose
GR III
Subject recognition
Adds Face, Eye
Codecs
Adds MPEG-4 AVC/H.264, MOV
Dimensions (W×H×D mm)
Adds 109.4, 61.9, 33.2
Card types
Adds SD, SDHC, SDXC UHS-I
Weight
257 g vs 699 g — lower is better
ISO max (native)
102,400 vs 64,000 — higher is better
Both cameras share
- ✓ISO min (native) — Both 100
- ✓Eye AF — Both support eye af
- ✓In-body stabilization (IBIS) — Both support in-body stabilization (ibis)
- ✓Touchscreen — Both support touchscreen
- ✓Wi-Fi — Both support wi-fi
- ✓Bluetooth — Both support bluetooth
Pros & cons at a glance
Editorially curated highlights and trade-offs.
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
GR III
Pros
- ✓Pocketable APS-C
- ✓28mm equivalent GR lens
- ✓3-axis sensor-shift SR
- ✓Snap focus street shooting
Cons
- –Fixed lens
- –No built-in EVF
- –Full HD video only
Decided which one is right for you?
Compare live prices for the EOS R6 Mark III and GR III at major authorized retailers.
Canon EOS R6 Mark III
Ricoh GR III
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for sports, EOS R6 Mark III or GR III?
EOS R6 Mark III scores 10.0/10 versus 1.5/10 for GR III — 40fps burst — pro-level action capture.
What's the resolution difference between the EOS R6 Mark III and GR III?
EOS R6 Mark III is 32.5 MP and GR III is 24.24 MP, so the EOS R6 Mark III captures more detail for cropping and large prints.
Do the EOS R6 Mark III and GR III have in-body image stabilization?
EOS R6 Mark III has 8.5-stop in-body image stabilization, while GR III has in-body image stabilization.
Which shoots faster bursts — the EOS R6 Mark III or the GR III?
EOS R6 Mark III reaches 40 fps electronic. GR III reaches 4 fps electronic.
What's the weight difference between the EOS R6 Mark III and GR III?
EOS R6 Mark III weighs 699 g and GR III weighs 257 g, so the GR III is 442 g lighter.
Do the EOS R6 Mark III and GR III record 4K video?
EOS R6 Mark III: 4K up to 120p. GR III: 4K up to 60p.
Are the EOS R6 Mark III and GR III weather sealed?
EOS R6 Mark III: Yes. GR III: No.
Which has better battery life?
Rated battery life is 640 shots (CIPA) for the EOS R6 Mark III and 200 shots for the GR III, giving the EOS R6 Mark III the edge.
How much does each cost?
EOS R6 Mark III launched at $2,799 and GR III at $899. The GR III is $1,900 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way EOS R6 Mark III vs GR III vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed July 2026.
Product images courtesy of Canon and Ricoh press materials.