Canon
EOS R6 Mark III
Hybrid 32.5MP full-frame RF body with 7K RAW video, 40fps electronic burst, 8.5-stop IBIS, and Dual Pixel CMOS AF II.
$2,799
Launch priceReleased Nov 2025
Sony
Alpha 6300
Weather-sealed APS-C workhorse that proved Sony could dominate enthusiast mirrorless.
$999
Launch priceReleased Feb 2016
EOS R6 Mark III is 9.8 years newer.
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Wins
EOS R6 Mark III
Wins
Alpha 6300
4 categories tied
Which would you choose?
TL;DR — Key differences
- AEOS R6 Mark III has higher Max video bit rate (2600 Mbps vs 150 Mbps)
- AEOS R6 Mark III has higher Burst (electronic) (40 fps vs 15 fps)
- AEOS R6 Mark III has higher ISO max (native) (64,000 vs 25,600)
- AEOS R6 Mark III has higher RAW buffer depth (150 frames vs 60 frames)
- AEOS R6 Mark III has higher Burst (mechanical) (12 fps vs 6 fps)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to share
EOS R6 Mark III
138 × 98 × 88 mm
699 g (1.54 lb / 24.66 oz)
Credit card
85.6 × 54 mm
for scale
Alpha 6300
120 × 67 × 49 mm
404 g (0.89 lb / 14.25 oz)
EOS R6 Mark III is 18mm wider, 32mm taller, and 40mm thicker than Alpha 6300.
EOS R6 Mark III is 295 g heavier than Alpha 6300.
Depth (front-to-back): 88mm EOS R6 Mark III · 49mm Alpha 6300
Back view, to scale
Width × Height — same proportions as the front of the body.
EOS R6 Mark III
138 × 98 mm
Credit card
85.6 × 54 mm
Alpha 6300
120 × 67 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
EOS R6 Mark III
138 × 88 mm
Credit card
85.6 × 54 mm
Alpha 6300
120 × 49 mm
Sensor size, to scale
EOS R6 Mark III
35.9 × 23.9 mm · Full Frame
858 mm² area
Alpha 6300
23.5 × 15.6 mm · APS-C
367 mm² area
2.3× larger sensor area = shallower depth of field and better low-light performance.
Lens ecosystem
Native lens selection
EOS R6 Mark III
Canon RF
105+
native lenses available
Alpha 6300
✓ more lensesSony E
350+
native lenses available
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 III
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
Max video bit rate
2600 Mbps vs 150 Mbps — higher is better
Burst (electronic)
40 fps vs 15 fps — higher is better
ISO max (native)
64,000 vs 25,600 — higher is better
RAW buffer depth
150 frames vs 60 frames — higher is better
Codecs
Adds CRM, XF-HEVC S, XF-AVC S
Reasons to choose
Alpha 6300
Subject recognition
Adds Human, Animal, Bird…
Dimensions (W×H×D mm)
Adds 120, 66.9, 48.8
Weight
404 g vs 699 g — lower 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
- ✓In-body stabilization (IBIS) — Both support in-body stabilization (ibis)
Pros & cons at a glance
Editorially curated highlights and trade-offs.
EOS R6 Mark III
Pros
- ✓32.5MP full-frame sensor
- ✓7K RAW video & 4K 120p
- ✓40fps electronic burst with Pre-Continuous
- ✓8.5-stop IBIS
Cons
- –Single CFexpress Type B + SD slot
- –Smaller LCD than R5 II
- –LP-E6P required for full features
Alpha 6300
Pros
- ✓Weather sealed
- ✓425-point AF
- ✓4K video
- ✓Great used value
Cons
- –No IBIS
- –Older menu system
- –Superseded
Decided which one is right for you?
Compare live prices for the EOS R6 Mark III and Alpha 6300 at major authorized retailers.
Canon EOS R6 Mark III
Sony Alpha 6300
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for landscape, EOS R6 Mark III or Alpha 6300?
EOS R6 Mark III scores 7.5/10 versus 5.0/10 for Alpha 6300 — 32.5MP — ample resolution.
What's the resolution difference between the EOS R6 Mark III and Alpha 6300?
EOS R6 Mark III is 32.5 MP and Alpha 6300 is 24.2 MP, so the EOS R6 Mark III captures more detail for cropping and large prints.
Do the EOS R6 Mark III and Alpha 6300 have in-body image stabilization?
EOS R6 Mark III has 8.5-stop in-body image stabilization, while Alpha 6300 has 6-stop in-body image stabilization.
Which shoots faster bursts — the EOS R6 Mark III or the Alpha 6300?
EOS R6 Mark III reaches 40 fps electronic. Alpha 6300 reaches 15 fps electronic.
What's the weight difference between the EOS R6 Mark III and Alpha 6300?
EOS R6 Mark III weighs 699 g and Alpha 6300 weighs 404 g, so the Alpha 6300 is 295 g lighter.
Do the EOS R6 Mark III and Alpha 6300 record 4K video?
EOS R6 Mark III: 4K up to 120p. Alpha 6300: 4K up to 60p.
Are the EOS R6 Mark III and Alpha 6300 weather sealed?
EOS R6 Mark III: Yes. Alpha 6300: Yes.
Which has better battery life?
Rated battery life is 640 shots (CIPA) for the EOS R6 Mark III and 640 shots for the Alpha 6300, giving the Alpha 6300 the edge.
How much does each cost?
EOS R6 Mark III launched at $2,799 and Alpha 6300 at $999. The Alpha 6300 is $1,800 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way EOS R6 Mark III vs Alpha 6300 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.