Canon
EOS R1
Flagship 24.2MP full-frame BSI stacked RF body with 40fps burst, Dual Pixel Intelligent AF, 6K RAW, and 9.44M-dot EVF.
$6,299
Released Jul 2024
Leica
SL3-S
Fast 24.6MP L-mount hybrid with 6K open-gate video, 30fps burst, and 5-axis stabilization.
$5,295
Released Jan 2025
SL3-S is 6 months newer.
Wins
EOS R1
Wins
SL3-S
2 categories tied
TL;DR — Key differences
- BSL3-S has lower ISO min (native) (50 vs 100)
- AEOS R1 has higher 4K max frame rate (120 fps vs 60 fps)
- BSL3-S has higher ISO max (native) (200,000 vs 102,400)
- AEOS R1 has higher Burst (mechanical) (12 fps vs 7 fps)
- AEOS R1 has higher IBIS effectiveness (8.5 stops vs 5 stops)
Key specs at a glance
Size and weight, to scale
EOS R1
158 × 150 × 87 mm
1115 g (2.46 lb / 39.33 oz)
SL3-S
141 × 108 × 83 mm
768 g (1.69 lb / 27.09 oz)
EOS R1 is 16mm wider, 42mm taller, and 5mm thicker than SL3-S.
EOS R1 is 347 g heavier than SL3-S.
Depth (front-to-back): 87mm EOS R1 · 83mm SL3-S
Back view, to scale
Width × Height — same proportions as the front of the body.
EOS R1
158 × 150 mm
SL3-S
141 × 108 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
EOS R1
158 × 87 mm
SL3-S
141 × 83 mm
Sensor size, to scale
EOS R1
36 × 24 mm · Full Frame
864 mm² area
SL3-S
36 × 24 mm · Full Frame
864 mm² area
Lens ecosystem
Native lens selection
EOS R1
✓ more lensesCanon RF
105+
native lenses available
SL3-S
Leica L
80+
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 R1
Subject recognition
Adds People, Dogs, Cats…
Dimensions (W×H×D mm)
Adds 157.6, 149.5, 87.3
Codecs
Adds RAW, XF-HEVC S, XF-AVC S
AA filter
Only EOS R1 supports it
Pre-Capture / Pre-Release
Only EOS R1 supports it
4K max frame rate
120 fps vs 60 fps — higher is better
Burst (mechanical)
12 fps vs 7 fps — higher is better
IBIS effectiveness
8.5 stops vs 5 stops — higher is better
Reasons to choose
SL3-S
Subject recognition
Adds Human, Animal
Dimensions (W×H×D mm)
Adds 141.2, 108, 82.7
ISO min (native)
50 vs 100 — lower is better
Card types
Adds SD UHS-II
ISO max (native)
200,000 vs 102,400 — higher is better
Codecs
Adds Apple ProRes
Weight
768 g vs 1115 g — lower is better
Resolution
24.6 MP vs 24.2 MP — higher is better
Both cameras share
- ✓AF frame coverage — Both 100 %
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
- ✓Internal RAW video — Both support internal raw video
- ✓In-body stabilization — Both support in-body stabilization
- ✓Weather sealing — Both support weather sealing
Pros & cons at a glance
Editorially curated highlights and trade-offs.
EOS R1
Pros
- ✓40fps electronic burst
- ✓24.2MP BSI stacked full-frame sensor
- ✓Dual Pixel Intelligent AF
- ✓6K RAW and 4K 120p video
- ✓Dual CFexpress Type B slots
Cons
- –24MP resolution
- –Very expensive
- –Large integrated-grip body
SL3-S
Pros
- ✓6K open-gate video
- ✓30fps electronic burst
- ✓24.6MP full-frame
- ✓CFexpress plus SD
Cons
- –Lower resolution than SL3
- –Large body
- –Premium price
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for sports, EOS R1 or SL3-S?
EOS R1 scores 8.5/10 versus 5.5/10 for SL3-S — 40fps burst — pro-level action capture.
What's the resolution difference between the EOS R1 and SL3-S?
EOS R1 is 24.2 MP and SL3-S is 24.6 MP, so the SL3-S captures more detail for cropping and large prints.
Do the EOS R1 and SL3-S have in-body image stabilization?
EOS R1 has 8.5-stop in-body image stabilization, while sL3-S has 5-stop in-body image stabilization.
Which shoots faster bursts — the EOS R1 or the SL3-S?
EOS R1 reaches 40 fps electronic. SL3-S reaches 30 fps electronic.
What's the weight difference between the EOS R1 and SL3-S?
EOS R1 weighs 1115 g and SL3-S weighs 768 g, so the SL3-S is 347 g lighter.
Do the EOS R1 and SL3-S record 4K video?
EOS R1: 6K RAW (max), 4K up to 120p. SL3-S: 6K Open Gate (max), 4K up to 60p.
Are the EOS R1 and SL3-S weather sealed?
EOS R1: Yes. SL3-S: Yes.
How much does each cost?
EOS R1 launched at $6,299 and SL3-S at $5,295. The SL3-S is $1,004 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Canon and Leica press materials.