Canon
EOS R100
Entry-level 24MP APS-C RF-mount camera with a small body, EVF, and simple stills-first feature set.
$479
Released May 2023
Canon
EOS R3
Pro 24MP full-frame stacked-sensor body built for sports, news, wildlife, and high-speed hybrid capture.
$5,999
Released Sep 2021
EOS R100 is 1.7 years newer.
Wins
EOS R100
Wins
EOS R3
2 categories tied
TL;DR — Key differences
- BEOS R3 has higher IBIS effectiveness (8 stops vs 0 stops)
- BEOS R3 has higher RAW buffer depth (150 frames vs 6 frames)
- BEOS R3 has higher Max video bit rate (2600 Mbps vs 120 Mbps)
- BEOS R3 has higher ISO max (native) (102,400 vs 12,800)
- BEOS R3 has higher 4K max frame rate (120 fps vs 24 fps)
Key specs at a glance
Size and weight, to scale
EOS R100
116 × 86 × 69 mm
356 g (0.78 lb / 12.56 oz)
EOS R3
150 × 143 × 87 mm
1015 g (2.24 lb / 35.80 oz)
EOS R100 is 34mm narrower, 57mm shorter, and 18mm thinner than EOS R3.
EOS R100 is 659 g lighter than EOS R3.
Depth (front-to-back): 69mm EOS R100 · 87mm EOS R3
Sensor size, to scale
EOS R100
22.3 × 14.9 mm · APS-C
332 mm² area
EOS R3
36 × 24 mm · Full Frame
864 mm² area
2.6× larger sensor area = shallower depth of field and better low-light performance.
Lens ecosystem
Native lens selection
EOS R100
✓ more lensesCanon RF
105+
native lenses available
EOS R3
✓ more lensesCanon RF
105+
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 R100
Subject recognition
Adds Human
Dimensions (W×H×D mm)
Adds 116.3, 85.5, 68.8
Card types
Adds SD UHS-I
AF points / zones
3975 vs 1053 — higher is better
Weight
356 g vs 1015 g — lower is better
EVF magnification
0.95 × vs 0.76 × — higher is better
Reasons to choose
EOS R3
AF low-light limit
-7.5 EV vs -4 EV — lower is better
Subject recognition
Adds People, Dogs, Cats…
IBIS effectiveness
8 stops vs 0 stops — higher is better
Dimensions (W×H×D mm)
Adds 150, 142.6, 87.2
Card types
Adds CFexpress Type B, SD UHS-II
RAW buffer depth
150 frames vs 6 frames — higher is better
Max video bit rate
2600 Mbps vs 120 Mbps — higher is better
ISO max (native)
102,400 vs 12,800 — higher is better
Both cameras share
- ✓Resolution — Both 24.1 MP
- ✓AA filter — Both support aa filter
- ✓ISO min (native) — Both 100
- ✓Eye AF — Both support eye af
- ✓Wi-Fi — Both support wi-fi
- ✓Bluetooth — Both support bluetooth
Pros & cons at a glance
Editorially curated highlights and trade-offs.
EOS R100
Pros
- ✓Very low entry price for Canon RF
- ✓Compact and lightweight body
- ✓Built-in EVF
- ✓Good image quality for beginners
Cons
- –Fixed non-touch LCD
- –Older DIGIC 8 processor
- –4K video is cropped and limited
- –No in-body stabilization
EOS R3
Pros
- ✓30fps electronic burst from a stacked full-frame sensor
- ✓Exceptional low-light AF down to -7.5 EV
- ✓Integrated pro body with large LP-E19 battery
- ✓6K RAW video and 4K 120p
- ✓Rugged weather-sealed construction
Cons
- –24MP resolution trails higher-detail rivals
- –Large integrated-grip body
- –Expensive compared with enthusiast full-frame bodies
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for video, EOS R100 or EOS R3?
EOS R3 scores 9.0/10 versus 2.5/10 for EOS R100 — 6K video for oversampled 4K.
What's the resolution difference between the EOS R100 and EOS R3?
Both cameras share the same 24.1 MP resolution.
Do the EOS R100 and EOS R3 have in-body image stabilization?
EOS R100 does not have IBIS, while eOS R3 has 8-stop in-body image stabilization.
Which shoots faster bursts — the EOS R100 or the EOS R3?
EOS R100 reaches 6.5 fps electronic. EOS R3 reaches 30 fps electronic.
What's the weight difference between the EOS R100 and EOS R3?
EOS R100 weighs 356 g and EOS R3 weighs 1015 g, so the EOS R100 is 659 g lighter.
Do the EOS R100 and EOS R3 record 4K video?
EOS R100: 4K up to 24p. EOS R3: 6K RAW (max), 4K up to 120p.
Are the EOS R100 and EOS R3 weather sealed?
EOS R100: No. EOS R3: Yes.
Which has better battery life?
Rated battery life is 430 shots (CIPA) for the EOS R100 and 620 shots for the EOS R3, giving the EOS R3 the edge.
How much does each cost?
EOS R100 launched at $479 and EOS R3 at $5,999. The EOS R100 is $5,520 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.