Canon
EOS R8 Mark II
Compact 24.2MP full-frame RF body with 5-axis IBIS (up to 7.5-stop Coordinated Control IS), Dual Pixel CMOS AF II, 40fps electronic bursts, and 6K-oversampled 4K 60p.
$1,899
Launch priceReleased Sep 2026
Insta360
GO 3S
Thumb-sized 4K POV camera with magnetic mounting, Action Pod remote preview, FlowState stabilization, and 10m waterproof body.
$400
Launch priceReleased Jun 2024
EOS R8 Mark II is 2.3 years newer.
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Wins
EOS R8 Mark II
Wins
GO 3S
2 categories tied
Which would you choose?
TL;DR — Key differences
- AEOS R8 Mark II has higher AF points / zones (1053 vs 0)
- AEOS R8 Mark II has higher ISO max (native) (25,600 vs 3,200)
- BGO 3S has lower Weight (135.4 g vs 499 g)
- AEOS R8 Mark II has higher 1080p max frame rate (180 fps vs 50 fps)
- AEOS R8 Mark II has higher Resolution (24.2 MP vs 12 MP)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to share
EOS R8 Mark II
131 × 90 × 80 mm
499 g (1.10 lb / 17.60 oz)
Credit card
85.6 × 54 mm
for scale
GO 3S
54 × 25 × 26 mm
135.4 g (0.30 lb / 4.78 oz)
EOS R8 Mark II is 77mm wider, 65mm taller, and 54mm thicker than GO 3S.
EOS R8 Mark II is 364 g heavier than GO 3S.
Depth (front-to-back): 80mm EOS R8 Mark II · 26mm GO 3S
Back view, to scale
Width × Height — same proportions as the front of the body.
EOS R8 Mark II
131 × 90 mm
Credit card
85.6 × 54 mm
GO 3S
54 × 25 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
EOS R8 Mark II
131 × 80 mm
Credit card
85.6 × 54 mm
GO 3S
54 × 26 mm
Sensor size, to scale
EOS R8 Mark II
36 × 24 mm · Full Frame
864 mm² area
Lens ecosystem
Native lens selection
EOS R8 Mark II
✓ more lensesCanon RF
105+
native lenses available
GO 3S: 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 R8 Mark II
AF points / zones
1053 vs 0 — higher is better
Subject recognition
Adds Human, Animal, Bird…
Codecs
Adds XF-HEVC S
Stabilization modes
Adds IBIS, Coordinated Control IS, Movie Digital IS…
Dimensions (W×H×D mm)
Adds 131.3, 89.9, 79.8
Card types
Adds SD, SDHC, SDXC
ISO max (native)
25,600 vs 3,200 — higher is better
1080p max frame rate
180 fps vs 50 fps — higher is better
Reasons to choose
GO 3S
Codecs
Adds H.264/AVC
Stabilization modes
Adds FlowState, Horizon Lock
Dimensions (W×H×D mm)
Adds 54.4, 24.8, 25.6
Card types
Adds microSD
Weight
135.4 g vs 499 g — lower is better
Both cameras share
- ✓ISO min (native) — Both 100
- ✓Weather sealing — Both support weather sealing
- ✓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.
EOS R8 Mark II
Pros
- ✓Lightest EOS full-frame body with IBIS (546g)
- ✓Up to 7.5-stop Coordinated Control IS
- ✓40fps electronic + 20-frame pre-capture
- ✓Uncropped 6K-oversampled 4K 60p / FHD 180p
- ✓Wi-Fi 6, USB 10 Gbps, headphone jack
Cons
- –Same 24.2MP sensor as original R8
- –Single SD UHS-II slot
- –LP-E17 battery (~340 LCD / 220 EVF shots)
- –No mechanical shutter
GO 3S
Pros
- ✓4K30 in a 39g body
- ✓Action Pod with 2.2-inch flip screen
- ✓FlowState + Horizon Lock
- ✓10m waterproof (camera only)
- ✓140 min runtime with Action Pod
Cons
- –Tiny 1/2.3-inch sensor
- –Fixed 16mm lens
- –Action Pod not waterproof
- –Built-in storage only (64/128GB)
Decided which one is right for you?
Compare live prices for the EOS R8 Mark II and GO 3S at major authorized retailers.
Canon EOS R8 Mark II
Insta360 GO 3S
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for wildlife, EOS R8 Mark II or GO 3S?
EOS R8 Mark II scores 9.0/10 versus 1.5/10 for GO 3S — 40fps burst captures fleeting moments.
What's the resolution difference between the EOS R8 Mark II and GO 3S?
EOS R8 Mark II is 24.2 MP and GO 3S is 12 MP, so the EOS R8 Mark II captures more detail for cropping and large prints.
Do the EOS R8 Mark II and GO 3S have in-body image stabilization?
EOS R8 Mark II has 7.5-stop in-body image stabilization, while GO 3S does not have IBIS.
What's the weight difference between the EOS R8 Mark II and GO 3S?
EOS R8 Mark II weighs 499 g and GO 3S weighs 135.4 g, so the GO 3S is 364 g lighter.
Do the EOS R8 Mark II and GO 3S record 4K video?
EOS R8 Mark II: 4K up to 59.94p. GO 3S: 4K up to 30p.
Are the EOS R8 Mark II and GO 3S weather sealed?
EOS R8 Mark II: Yes. GO 3S: Yes.
How much does each cost?
EOS R8 Mark II launched at $1,899 and GO 3S at $400. The GO 3S is $1,499 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way EOS R8 Mark II vs GO 3S vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed September 2026.
Product images courtesy of Canon and Insta360 press materials.