Insta360
Ace Pro 2
8K Leica-lens action camera with 1/1.3-inch sensor, 4K60 Active HDR, PureVideo low-light mode, and 12m waterproofing.
$449
Launch priceReleased Oct 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
Launch priceReleased Jan 2026
GR IV is 1.2 years newer.
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Wins
Ace Pro 2
Wins
GR IV
3 categories tied
Which would you choose?
TL;DR — Key differences
- BGR IV has higher AF points / zones (49 vs 0)
- BGR IV has higher ISO max (native) (204,800 vs 6,400)
- AAce Pro 2 has higher Burst (electronic) (20 fps vs 4 fps)
- AAce Pro 2 has higher 1080p max frame rate (240 fps vs 60 fps)
- AAce Pro 2 has higher Burst (mechanical) (8 fps vs 4 fps)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to share
Ace Pro 2
72 × 52 × 38 mm
177.2 g (0.39 lb / 6.25 oz)
Credit card
85.6 × 54 mm
for scale
GR IV
109 × 61 × 33 mm
262 g (0.58 lb / 9.24 oz)
Ace Pro 2 is 38mm narrower and 9mm shorter than GR IV but it is also 5mm thicker.
Ace Pro 2 is 85 g lighter than GR IV.
Depth (front-to-back): 38mm Ace Pro 2 · 33mm GR IV
Back view, to scale
Width × Height — same proportions as the front of the body.
Ace Pro 2
72 × 52 mm
Credit card
85.6 × 54 mm
GR IV
109 × 61 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
Ace Pro 2
72 × 38 mm
Credit card
85.6 × 54 mm
GR IV
109 × 33 mm
Sensor size, to scale
Ace Pro 2
9.6 × 7.2 mm · Compact
69 mm² area
GR IV
23.3 × 15.5 mm · APS-C
361 mm² area
5.2× larger sensor area = shallower depth of field and better low-light performance.
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
Ace Pro 2
Codecs
Adds H.264, H.265
Stabilization modes
Adds FlowState, Horizon Lock 360°, Active HDR…
Dimensions (W×H×D mm)
Adds 71.9, 52.2, 38
Burst (electronic)
20 fps vs 4 fps — higher is better
1080p max frame rate
240 fps vs 60 fps — higher is better
Burst (mechanical)
8 fps vs 4 fps — higher is better
Pre-Capture / Pre-Release
Only Ace Pro 2 supports it
Internal RAW video
Only Ace Pro 2 supports it
Reasons to choose
GR IV
AF points / zones
49 vs 0 — higher is better
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
ISO max (native)
204,800 vs 6,400 — higher is better
Card types
Adds microSDHC, microSDXC UHS-I
Eye AF
Only GR IV supports it
In-body stabilization (IBIS)
Only GR IV supports it
Both cameras share
- ✓ISO min (native) — Both 100
- ✓4K max frame rate — Both 60 fps
- ✓Card slots — Both 1
- ✓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.
Ace Pro 2
Pros
- ✓8K30 video
- ✓1/1.3-inch Leica lens
- ✓PureVideo night mode
- ✓12m waterproof
Cons
- –8K drains battery faster
- –Premium vs DJI Action
- –Fixed lens
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
Decided which one is right for you?
Compare live prices for the Ace Pro 2 and GR IV at major authorized retailers.
Insta360 Ace Pro 2
Ricoh GR IV
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for sports, Ace Pro 2 or GR IV?
Ace Pro 2 scores 10.0/10 versus 1.5/10 for GR IV — 20fps burst — fast action ready.
What's the resolution difference between the Ace Pro 2 and GR IV?
Ace Pro 2 is 50 MP and GR IV is 25.74 MP, so the Ace Pro 2 captures more detail for cropping and large prints.
Do the Ace Pro 2 and GR IV have in-body image stabilization?
Ace Pro 2 uses FlowState electronic stabilization (electronic), while GR IV has in-body image stabilization.
Which shoots faster bursts — the Ace Pro 2 or the GR IV?
Ace Pro 2 reaches 20 fps electronic. GR IV reaches 4 fps electronic.
What's the weight difference between the Ace Pro 2 and GR IV?
Ace Pro 2 weighs 177.2 g and GR IV weighs 262 g, so the Ace Pro 2 is 85 g lighter.
Do the Ace Pro 2 and GR IV record 4K video?
Ace Pro 2: 8K (max), 4K up to 60p. GR IV: 4K up to 60p.
Are the Ace Pro 2 and GR IV weather sealed?
Ace Pro 2: Yes. GR IV: No.
How much does each cost?
Ace Pro 2 launched at $449 and GR IV at $1,499. The Ace Pro 2 is $1,050 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way Ace Pro 2 vs GR IV vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed July 2026.
Product images courtesy of Insta360 and Ricoh press materials.