Canon
EOS R7
32.5MP APS-C RF-mount body with 30fps burst, 4K 60p, 7-stop IBIS, and advanced subject tracking.
$1,499
Released May 2022
Ricoh
GR IIIx
GR III with a tighter 40mm equivalent GR lens for a natural street, travel, and documentary perspective.
$999
Released Sep 2021
EOS R7 is 8 months newer.
Wins
EOS R7
Wins
GR IIIx
2 categories tied
TL;DR — Key differences
- AEOS R7 has higher AF points / zones (651 vs 49)
- AEOS R7 has higher Burst (electronic) (30 fps vs 4 fps)
- AEOS R7 has higher Burst (mechanical) (15 fps vs 4 fps)
- AEOS R7 has higher Battery life (CIPA) (660 shots vs 200 shots)
- BGR IIIx has higher ISO max (native) (102,400 vs 32,000)
Key specs at a glance
Size and weight, to scale
EOS R7
132 × 90 × 92 mm
612 g (1.35 lb / 21.59 oz)
GR IIIx
109 × 62 × 35 mm
262 g (0.58 lb / 9.24 oz)
EOS R7 is 23mm wider, 29mm taller, and 57mm thicker than GR IIIx.
EOS R7 is 350 g heavier than GR IIIx.
Depth (front-to-back): 92mm EOS R7 · 35mm GR IIIx
Sensor size, to scale
EOS R7
22.3 × 14.8 mm · APS-C
330 mm² area
GR IIIx
23.5 × 15.6 mm · APS-C
367 mm² area
1.1× larger sensor area = shallower depth of field and better low-light performance.
Lens ecosystem
Native lens selection
EOS R7
✓ more lensesCanon RF
105+
native lenses available
GR IIIx: 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 R7
Subject recognition
Adds Human, Animal, Bird…
Codecs
Adds H.265, H.264
Dimensions (W×H×D mm)
Adds 132, 90.4, 91.7
Card types
Adds SD UHS-II
AF points / zones
651 vs 49 — higher is better
Burst (electronic)
30 fps vs 4 fps — higher is better
Burst (mechanical)
15 fps vs 4 fps — higher is better
Battery life (CIPA)
660 shots vs 200 shots — higher is better
Reasons to choose
GR IIIx
Subject recognition
Adds Face, Eye
Codecs
Adds MPEG-4 AVC/H.264, MOV
Dimensions (W×H×D mm)
Adds 109.4, 61.9, 35.2
Card types
Adds SD, SDHC, SDXC UHS-I
ISO max (native)
102,400 vs 32,000 — higher is better
Weight
262 g vs 612 g — lower is better
Both cameras share
- ✓ISO min (native) — Both 100
- ✓Eye AF — Both support eye af
- ✓4K max frame rate — Both 60 fps
- ✓In-body stabilization — Both support in-body stabilization
- ✓Touchscreen — Both support touchscreen
- ✓Wi-Fi — Both support wi-fi
Pros & cons at a glance
Editorially curated highlights and trade-offs.
EOS R7
Pros
- ✓High-resolution 32.5MP APS-C sensor
- ✓Up to 30fps electronic burst
- ✓7-stop in-body stabilization
- ✓Dual SD UHS-II card slots
- ✓Strong value for wildlife and sports reach
Cons
- –APS-C sensor trails full-frame in low-light depth
- –RF-S lens lineup is still limited
- –4K 60p uses a crop in some modes
GR IIIx
Pros
- ✓40mm equivalent GR lens
- ✓Pocketable APS-C
- ✓3-axis SR
- ✓Snap focus street shooting
Cons
- –Fixed lens
- –No built-in EVF
- –Full HD video only
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for sports, EOS R7 or GR IIIx?
EOS R7 scores 8.0/10 versus 0.5/10 for GR IIIx — 30fps burst — pro-level action capture.
What's the resolution difference between the EOS R7 and GR IIIx?
EOS R7 is 32.5 MP and GR IIIx is 24.24 MP, so the EOS R7 captures more detail for cropping and large prints.
Do the EOS R7 and GR IIIx have in-body image stabilization?
EOS R7 has 8-stop in-body image stabilization, while gR IIIx has in-body image stabilization.
Which shoots faster bursts — the EOS R7 or the GR IIIx?
EOS R7 reaches 30 fps electronic. GR IIIx reaches 4 fps electronic.
What's the weight difference between the EOS R7 and GR IIIx?
EOS R7 weighs 612 g and GR IIIx weighs 262 g, so the GR IIIx is 350 g lighter.
Do the EOS R7 and GR IIIx record 4K video?
EOS R7: 4K up to 60p. GR IIIx: 4K up to 60p.
Are the EOS R7 and GR IIIx weather sealed?
EOS R7: Yes. GR IIIx: No.
Which has better battery life?
Rated battery life is 660 shots (CIPA) for the EOS R7 and 200 shots for the GR IIIx, giving the EOS R7 the edge.
How much does each cost?
EOS R7 launched at $1,499 and GR IIIx at $999. The GR IIIx is $500 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.