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
Sigma
BF
Minimalist full-frame L-mount body with large top screen and unique design.
$1,999
Released Apr 2024
EOS R1 is 3 months newer.
Wins
EOS R1
Wins
BF
3 categories tied
TL;DR — Key differences
- AEOS R1 has higher AF points / zones (1053 vs 49)
- AEOS R1 has higher ISO max (native) (102,400 vs 25,600)
- AEOS R1 has higher EVF resolution (9,440,000 vs 2,360,000)
- AEOS R1 has higher Burst (electronic) (40 fps vs 15 fps)
- AEOS R1 has higher Burst (mechanical) (12 fps vs 6 fps)
Key specs at a glance
Size and weight, to scale
EOS R1
158 × 150 × 87 mm
1115 g (2.46 lb / 39.33 oz)
BF
138 × 98 × 88 mm
720 g (1.59 lb / 25.40 oz)
EOS R1 is 1mm thinner than BF but it is also 20mm wider and 52mm taller.
EOS R1 is 395 g heavier than BF.
Depth (front-to-back): 87mm EOS R1 · 88mm BF
Back view, to scale
Width × Height — same proportions as the front of the body.
EOS R1
158 × 150 mm
BF
138 × 98 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
EOS R1
158 × 87 mm
BF
138 × 88 mm
Sensor size, to scale
EOS R1
36 × 24 mm · Full Frame
864 mm² area
BF
36 × 24 mm · Full Frame
864 mm² area
Lens ecosystem
Native lens selection
EOS R1
✓ more lensesCanon RF
105+
native lenses available
BF: 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 R1
AF low-light limit
-7.5 EV vs -5 EV — lower is better
Subject recognition
Adds People, Dogs, Cats…
Dimensions (W×H×D mm)
Adds 157.6, 149.5, 87.3
Card types
Adds CFexpress Type B, CFexpress Type B
AF points / zones
1053 vs 49 — higher is better
ISO max (native)
102,400 vs 25,600 — higher is better
EVF resolution
9,440,000 vs 2,360,000 — higher is better
Burst (electronic)
40 fps vs 15 fps — higher is better
Reasons to choose
BF
Subject recognition
Adds Human, Animal, Bird…
Dimensions (W×H×D mm)
Adds 138, 98, 88
Card types
Adds SD UHS-II
Weight
720 g vs 1115 g — lower is better
Both cameras share
- ✓Resolution — Both 24.2 MP
- ✓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
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
BF
Pros
- ✓Unique design
- ✓Full-frame
- ✓L-mount
Cons
- –No IBIS
- –Niche ergonomics
- –Limited controls
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for video, EOS R1 or BF?
EOS R1 scores 9.0/10 versus 6.0/10 for BF — 6K video for oversampled 4K.
What's the resolution difference between the EOS R1 and BF?
Both cameras share the same 24.2 MP resolution.
Do the EOS R1 and BF have in-body image stabilization?
EOS R1 has 8.5-stop in-body image stabilization, while bF has 6-stop in-body image stabilization.
Which shoots faster bursts — the EOS R1 or the BF?
EOS R1 reaches 40 fps electronic. BF reaches 15 fps electronic.
What's the weight difference between the EOS R1 and BF?
EOS R1 weighs 1115 g and BF weighs 720 g, so the BF is 395 g lighter.
Do the EOS R1 and BF record 4K video?
EOS R1: 6K RAW (max), 4K up to 120p. BF: 4K up to 60p.
Are the EOS R1 and BF weather sealed?
EOS R1: Yes. BF: Yes.
How much does each cost?
EOS R1 launched at $6,299 and BF at $1,999. The BF is $4,300 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Canon and Sigma press materials.