Canon
EOS R1
Flagship 24.2MP full-frame BSI stacked RF body with 40fps burst, Dual Pixel Intelligent AF, 6K RAW, and 9.44M-dot EVF.
$6,299
Released Jul 2024
Ricoh
GR IV
Latest GR with 25.74MP APS-C sensor, 28mm equivalent lens, 5-axis SR, 53GB internal memory, and pocket street-camera handling.
$1,499
Released Jan 2026
GR IV is 1.5 years newer.
Wins
EOS R1
Wins
GR IV
1 categories tied
Check current prices
Search these camera bodies at major authorized retailers to check current discounts, bundled lenses, and certified refurbished deals:
TL;DR — Key differences
- AEOS R1 has higher AF points / zones (1053 vs 49)
- AEOS R1 has higher Burst (electronic) (40 fps vs 4 fps)
- BGR IV has lower Weight (262 g vs 1115 g)
- AEOS R1 has higher Burst (mechanical) (12 fps vs 4 fps)
- BGR IV has higher ISO max (native) (204,800 vs 102,400)
Key specs at a glance
Size and weight, to scale
EOS R1
158 × 150 × 87 mm
1115 g (2.46 lb / 39.33 oz)
GR IV
109 × 61 × 33 mm
262 g (0.58 lb / 9.24 oz)
EOS R1 is 48mm wider, 88mm taller, and 55mm thicker than GR IV.
EOS R1 is 853 g heavier than GR IV.
Depth (front-to-back): 87mm EOS R1 · 33mm GR IV
Back view, to scale
Width × Height — same proportions as the front of the body.
EOS R1
158 × 150 mm
GR IV
109 × 61 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
EOS R1
158 × 87 mm
GR IV
109 × 33 mm
Sensor size, to scale
EOS R1
36 × 24 mm · Full Frame
864 mm² area
GR IV
23.3 × 15.5 mm · APS-C
361 mm² area
2.4× larger sensor area = shallower depth of field and better low-light performance.
Lens ecosystem
Native lens selection
EOS R1
✓ more lensesCanon RF
105+
native lenses available
GR IV: 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 R1
Subject recognition
Adds People, Dogs, Cats…
Codecs
Adds RAW, XF-HEVC S, XF-AVC S…
Dimensions (W×H×D mm)
Adds 157.6, 149.5, 87.3
Card types
Adds CFexpress Type B, CFexpress Type B
AF points / zones
1053 vs 49 — higher is better
Burst (electronic)
40 fps vs 4 fps — higher is better
Burst (mechanical)
12 fps vs 4 fps — higher is better
AA filter
Only EOS R1 supports it
Reasons to choose
GR IV
Subject recognition
Adds Face, Eye
Codecs
Adds MPEG-4 AVC/H.264, MOV
Dimensions (W×H×D mm)
Adds 109.4, 61.1, 32.7
Card types
Adds microSD, microSDHC, microSDXC UHS-I
Weight
262 g vs 1115 g — lower is better
ISO max (native)
204,800 vs 102,400 — higher is better
Resolution
25.74 MP vs 24.2 MP — higher is better
Both cameras share
- ✓ISO min (native) — Both 100
- ✓Eye AF — Both support eye af
- ✓In-body stabilization — Both support in-body stabilization
- ✓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 R1
Pros
- ✓40fps electronic burst
- ✓24.2MP BSI stacked full-frame sensor
- ✓Dual Pixel Intelligent AF
- ✓6K RAW and 4K 120p video
- ✓Dual CFexpress Type B slots
Cons
- –24MP resolution
- –Very expensive
- –Large integrated-grip body
GR IV
Pros
- ✓25.74MP APS-C sensor
- ✓5-axis sensor-shift SR
- ✓53GB internal memory
- ✓Pocketable 28mm GR lens
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 R1 or GR IV?
EOS R1 scores 8.5/10 versus 0.5/10 for GR IV — 40fps burst — pro-level action capture.
What's the resolution difference between the EOS R1 and GR IV?
EOS R1 is 24.2 MP and GR IV is 25.74 MP, so the GR IV captures more detail for cropping and large prints.
Do the EOS R1 and GR IV have in-body image stabilization?
EOS R1 has 8.5-stop in-body image stabilization, while gR IV has in-body image stabilization.
Which shoots faster bursts — the EOS R1 or the GR IV?
EOS R1 reaches 40 fps electronic. GR IV reaches 4 fps electronic.
What's the weight difference between the EOS R1 and GR IV?
EOS R1 weighs 1115 g and GR IV weighs 262 g, so the GR IV is 853 g lighter.
Do the EOS R1 and GR IV record 4K video?
EOS R1: 6K RAW (max), 4K up to 120p. GR IV: 4K up to 60p.
Are the EOS R1 and GR IV weather sealed?
EOS R1: Yes. GR IV: No.
How much does each cost?
EOS R1 launched at $6,299 and GR IV at $1,499. The GR IV is $4,800 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Canon and Ricoh press materials.