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 6100
Compact APS-C body with real-time Eye AF, 11fps burst, and 4K video for beginners stepping up.
$749
Launch priceReleased Aug 2019
EOS R6 Mark III is 6.2 years newer.
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Wins
EOS R6 Mark III
Wins
Alpha 6100
3 categories tied
Which would you choose?
TL;DR — Key differences
- AEOS R6 Mark III has higher IBIS effectiveness (8.5 stops vs 0 stops)
- 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 11 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)
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 6100
120 × 67 × 60 mm
396 g (0.87 lb / 13.97 oz)
EOS R6 Mark III is 18mm wider, 32mm taller, and 29mm thicker than Alpha 6100.
EOS R6 Mark III is 303 g heavier than Alpha 6100.
Depth (front-to-back): 88mm EOS R6 Mark III · 60mm Alpha 6100
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 6100
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 6100
120 × 60 mm
Sensor size, to scale
EOS R6 Mark III
35.9 × 23.9 mm · Full Frame
858 mm² area
Alpha 6100
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 6100
✓ 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…
IBIS effectiveness
8.5 stops vs 0 stops — higher is better
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 11 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
Reasons to choose
Alpha 6100
Subject recognition
Adds Human, Animal, Bird…
Dimensions (W×H×D mm)
Adds 120, 66.9, 59.7
Weight
396 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
- ✓Battery life (CIPA) — Both 640 shots
- ✓EVF refresh rate — Both 120 Hz
- ✓Wi-Fi — Both support wi-fi
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 6100
Pros
- ✓Real-time Eye AF
- ✓11fps burst
- ✓Compact body
- ✓Affordable E-mount
Cons
- –No IBIS
- –Small grip
- –Superseded by newer APS-C
Decided which one is right for you?
Compare live prices for the EOS R6 Mark III and Alpha 6100 at major authorized retailers.
Canon EOS R6 Mark III
Sony Alpha 6100
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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 6100?
EOS R6 Mark III scores 7.5/10 versus 1.5/10 for Alpha 6100 — 32.5MP — ample resolution.
What's the resolution difference between the EOS R6 Mark III and Alpha 6100?
EOS R6 Mark III is 32.5 MP and Alpha 6100 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 6100 have in-body image stabilization?
EOS R6 Mark III has 8.5-stop in-body image stabilization, while Alpha 6100 does not have IBIS.
Which shoots faster bursts — the EOS R6 Mark III or the Alpha 6100?
EOS R6 Mark III reaches 40 fps electronic. Alpha 6100 reaches 11 fps electronic.
What's the weight difference between the EOS R6 Mark III and Alpha 6100?
EOS R6 Mark III weighs 699 g and Alpha 6100 weighs 396 g, so the Alpha 6100 is 303 g lighter.
Do the EOS R6 Mark III and Alpha 6100 record 4K video?
EOS R6 Mark III: 4K up to 120p. Alpha 6100: 4K up to 60p.
Are the EOS R6 Mark III and Alpha 6100 weather sealed?
EOS R6 Mark III: Yes. Alpha 6100: No.
Which has better battery life?
Rated battery life is 640 shots (CIPA) for the EOS R6 Mark III and 640 shots for the Alpha 6100, giving the Alpha 6100 the edge.
How much does each cost?
EOS R6 Mark III launched at $2,799 and Alpha 6100 at $749. The Alpha 6100 is $2,050 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way EOS R6 Mark III vs Alpha 6100 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.