Canon
EOS R6 Mark II
Versatile 24.2MP full-frame hybrid with class-leading AF and 4K 60p video.
$2,499
Launch priceReleased Nov 2022
Sony
Alpha 99 II
42MP A-mount flagship with translucent mirror, 12fps, and 5-axis IBIS for Sony/Minolta lenses.
$3,199
Launch priceReleased Nov 2016
EOS R6 Mark II is 6 years newer.
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Wins
EOS R6 Mark II
Wins
Alpha 99 II
5 categories tied
Which would you choose?
TL;DR — Key differences
- AEOS R6 Mark II has higher ISO max (native) (102,400 vs 25,600)
- AEOS R6 Mark II has higher Max video bit rate (340 Mbps vs 150 Mbps)
- AEOS R6 Mark II has higher Burst (electronic) (40 fps vs 20 fps)
- AEOS R6 Mark II has higher IBIS effectiveness (8 stops vs 4.5 stops)
- BAlpha 99 II has higher Resolution (42.4 MP vs 24.2 MP)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to share
EOS R6 Mark II
138 × 98 × 88 mm
670 g (1.48 lb / 23.63 oz)
Credit card
85.6 × 54 mm
for scale
Alpha 99 II
143 × 105 × 82 mm
849 g (1.87 lb / 29.95 oz)
EOS R6 Mark II is 4mm narrower and 6mm shorter than Alpha 99 II but it is also 7mm thicker.
EOS R6 Mark II is 179 g lighter than Alpha 99 II.
Depth (front-to-back): 88mm EOS R6 Mark II · 82mm Alpha 99 II
Back view, to scale
Width × Height — same proportions as the front of the body.
EOS R6 Mark II
138 × 98 mm
Credit card
85.6 × 54 mm
Alpha 99 II
143 × 105 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
EOS R6 Mark II
138 × 88 mm
Credit card
85.6 × 54 mm
Alpha 99 II
143 × 82 mm
Sensor size, to scale
EOS R6 Mark II
35.9 × 23.9 mm · Full Frame
858 mm² area
Alpha 99 II
35.9 × 24 mm · Full Frame
862 mm² area
Lens ecosystem
Native lens selection
EOS R6 Mark II
✓ more lensesCanon RF
105+
native lenses available
Alpha 99 II: 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 II
AF low-light limit
-6.5 EV vs -4 EV — lower is better
Subject recognition
Adds People, Dogs, Cats…
Dimensions (W×H×D mm)
Adds 138.4, 98.4, 88.4
ISO max (native)
102,400 vs 25,600 — higher is better
Max video bit rate
340 Mbps vs 150 Mbps — higher is better
Burst (electronic)
40 fps vs 20 fps — higher is better
Internal RAW video
Only EOS R6 Mark II supports it
IBIS effectiveness
8 stops vs 4.5 stops — higher is better
Reasons to choose
Alpha 99 II
Subject recognition
Adds Human, Animal, Bird…
Dimensions (W×H×D mm)
Adds 142.6, 104.8, 81.6
Resolution
42.4 MP vs 24.2 MP — higher is better
EVF magnification
0.78 × vs 0.76 × — higher is better
Both cameras share
- ✓AA filter — Both support aa filter
- ✓ISO min (native) — Both 100
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
- ✓Pre-Capture / Pre-Release — Both support pre-capture / pre-release
- ✓4K max frame rate — Both 60 fps
Pros & cons at a glance
Editorially curated highlights and trade-offs.
EOS R6 Mark II
Pros
- ✓Up to 40fps electronic burst
- ✓4K 60p oversampled from 6K
- ✓Dual Pixel CMOS AF II — superb subject tracking
- ✓8-stop IBIS
- ✓Fully articulating touchscreen
Cons
- –24.2MP may feel limiting for large prints
- –No CFexpress on base body
- –Short battery life vs. A7 IV
Alpha 99 II
Pros
- ✓42MP A-mount
- ✓5-axis IBIS
- ✓12fps
- ✓Huge Minolta lens library
Cons
- –A-mount declining
- –Translucent mirror system
- –Large body
Decided which one is right for you?
Compare live prices for the EOS R6 Mark II and Alpha 99 II at major authorized retailers.
Canon EOS R6 Mark II
Sony Alpha 99 II
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for wildlife, EOS R6 Mark II or Alpha 99 II?
Alpha 99 II scores 9.0/10 versus 6.5/10 for EOS R6 Mark II — 20fps burst captures fleeting moments.
What's the resolution difference between the EOS R6 Mark II and Alpha 99 II?
EOS R6 Mark II is 24.2 MP and Alpha 99 II is 42.4 MP, so the Alpha 99 II captures more detail for cropping and large prints.
Do the EOS R6 Mark II and Alpha 99 II have in-body image stabilization?
EOS R6 Mark II has 8-stop in-body image stabilization, while Alpha 99 II has 4.5-stop in-body image stabilization.
Which shoots faster bursts — the EOS R6 Mark II or the Alpha 99 II?
EOS R6 Mark II reaches 40 fps electronic. Alpha 99 II reaches 20 fps electronic.
What's the weight difference between the EOS R6 Mark II and Alpha 99 II?
EOS R6 Mark II weighs 670 g and Alpha 99 II weighs 849 g, so the EOS R6 Mark II is 179 g lighter.
Do the EOS R6 Mark II and Alpha 99 II record 4K video?
EOS R6 Mark II: 4K up to 60p. Alpha 99 II: 4K up to 60p.
Are the EOS R6 Mark II and Alpha 99 II weather sealed?
EOS R6 Mark II: Yes. Alpha 99 II: Yes.
Which has better battery life?
Rated battery life is 760 shots (CIPA) for the EOS R6 Mark II and 640 shots for the Alpha 99 II, giving the EOS R6 Mark II the edge.
How much does each cost?
EOS R6 Mark II launched at $2,499 and Alpha 99 II at $3,199. The EOS R6 Mark II is $700 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way EOS R6 Mark II vs Alpha 99 II vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.
Product images courtesy of Canon and Sony press materials.