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
Canon
EOS Rebel SL3
World's lightest DSLR with 24MP APS-C, Dual Pixel AF in live view, and vari-angle touchscreen.
$549
Launch priceReleased Apr 2019
EOS R6 Mark III is 6.6 years newer.
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Wins
EOS R6 Mark III
Wins
EOS Rebel SL3
6 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 RAW buffer depth (150 frames vs 6 frames)
- 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 5 fps)
- AEOS R6 Mark III has higher ISO max (native) (64,000 vs 25,600)
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
EOS Rebel SL3
122 × 93 × 70 mm
449 g (0.99 lb / 15.84 oz)
EOS R6 Mark III is 16mm wider, 6mm taller, and 19mm thicker than EOS Rebel SL3.
EOS R6 Mark III is 250 g heavier than EOS Rebel SL3.
Depth (front-to-back): 88mm EOS R6 Mark III · 70mm EOS Rebel SL3
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
EOS Rebel SL3
122 × 93 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
EOS Rebel SL3
122 × 70 mm
Sensor size, to scale
EOS R6 Mark III
35.9 × 23.9 mm · Full Frame
858 mm² area
EOS Rebel SL3
22.3 × 14.9 mm · APS-C
332 mm² area
2.6× larger sensor area = shallower depth of field and better low-light performance.
Lens ecosystem
Native lens selection
EOS R6 Mark III
✓ more lensesCanon RF
105+
native lenses available
EOS Rebel SL3: 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 III
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
RAW buffer depth
150 frames vs 6 frames — higher is better
Max video bit rate
2600 Mbps vs 150 Mbps — higher is better
Burst (electronic)
40 fps vs 5 fps — higher is better
ISO max (native)
64,000 vs 25,600 — higher is better
Codecs
Adds CRM, XF-HEVC S, XF-AVC S
Reasons to choose
EOS Rebel SL3
Subject recognition
Adds Human, Animal, Bird…
Dimensions (W×H×D mm)
Adds 122.4, 92.6, 69.8
Weight
449 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
- ✓AF points / zones — Both 1053
- ✓AF frame coverage — Both 100 %
- ✓Eye AF — Both support eye af
- ✓Battery life (CIPA) — Both 640 shots
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
EOS Rebel SL3
Pros
- ✓Lightest DSLR
- ✓Dual Pixel live view AF
- ✓Vari-angle screen
- ✓Affordable
Cons
- –DSLR declining
- –No 4K 60p
- –Single card slot
Decided which one is right for you?
Compare live prices for the EOS R6 Mark III and EOS Rebel SL3 at major authorized retailers.
Canon EOS R6 Mark III
Canon EOS Rebel SL3
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for sports, EOS R6 Mark III or EOS Rebel SL3?
EOS R6 Mark III scores 10.0/10 versus 4.0/10 for EOS Rebel SL3 — 40fps burst — pro-level action capture.
What's the resolution difference between the EOS R6 Mark III and EOS Rebel SL3?
EOS R6 Mark III is 32.5 MP and EOS Rebel SL3 is 24.1 MP, so the EOS R6 Mark III captures more detail for cropping and large prints.
Do the EOS R6 Mark III and EOS Rebel SL3 have in-body image stabilization?
EOS R6 Mark III has 8.5-stop in-body image stabilization, while EOS Rebel SL3 does not have IBIS.
Which shoots faster bursts — the EOS R6 Mark III or the EOS Rebel SL3?
EOS R6 Mark III reaches 40 fps electronic. EOS Rebel SL3 reaches 5 fps electronic.
What's the weight difference between the EOS R6 Mark III and EOS Rebel SL3?
EOS R6 Mark III weighs 699 g and EOS Rebel SL3 weighs 449 g, so the EOS Rebel SL3 is 250 g lighter.
Do the EOS R6 Mark III and EOS Rebel SL3 record 4K video?
EOS R6 Mark III: 4K up to 120p. EOS Rebel SL3: 4K up to 60p.
Are the EOS R6 Mark III and EOS Rebel SL3 weather sealed?
EOS R6 Mark III: Yes. EOS Rebel SL3: No.
Which has better battery life?
Rated battery life is 640 shots (CIPA) for the EOS R6 Mark III and 640 shots for the EOS Rebel SL3, giving the EOS Rebel SL3 the edge.
How much does each cost?
EOS R6 Mark III launched at $2,799 and EOS Rebel SL3 at $549. The EOS Rebel SL3 is $2,250 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way EOS R6 Mark III vs EOS Rebel SL3 vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.
Product images courtesy of Canon press materials.