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 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
Released Nov 2025
EOS R6 Mark III is 2.4 years newer.
Wins
EOS R100
Wins
EOS R6 Mark III
1 categories tied
TL;DR — Key differences
- BEOS R6 Mark III has higher IBIS effectiveness (8.5 stops vs 0 stops)
- BEOS R6 Mark III has higher RAW buffer depth (150 frames vs 6 frames)
- BEOS R6 Mark III has higher Max video bit rate (2600 Mbps vs 120 Mbps)
- BEOS R6 Mark III has higher Burst (electronic) (40 fps vs 6.5 fps)
- BEOS R6 Mark III has higher ISO max (native) (64,000 vs 12,800)
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 R6 Mark III
138 × 98 × 88 mm
699 g (1.54 lb / 24.66 oz)
EOS R100 is 22mm narrower, 13mm shorter, and 20mm thinner than EOS R6 Mark III.
EOS R100 is 343 g lighter than EOS R6 Mark III.
Depth (front-to-back): 69mm EOS R100 · 88mm EOS R6 Mark III
Back view, to scale
Width × Height — same proportions as the front of the body.
EOS R100
116 × 86 mm
EOS R6 Mark III
138 × 98 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
EOS R100
116 × 69 mm
EOS R6 Mark III
138 × 88 mm
Sensor size, to scale
EOS R100
22.3 × 14.9 mm · APS-C
332 mm² area
EOS R6 Mark III
35.9 × 23.9 mm · Full Frame
858 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 R6 Mark III
✓ 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 699 g — lower is better
EVF magnification
0.95 × vs 0.76 × — higher is better
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
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
Burst (electronic)
40 fps vs 6.5 fps — higher is better
Both cameras share
- ✓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 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
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for wildlife, EOS R100 or EOS R6 Mark III?
EOS R6 Mark III scores 6.5/10 versus 0.0/10 for EOS R100 — 40fps burst captures fleeting moments.
What's the resolution difference between the EOS R100 and EOS R6 Mark III?
EOS R100 is 24.1 MP and EOS R6 Mark III is 32.5 MP, so the EOS R6 Mark III captures more detail for cropping and large prints.
Do the EOS R100 and EOS R6 Mark III have in-body image stabilization?
EOS R100 does not have IBIS, while eOS R6 Mark III has 8.5-stop in-body image stabilization.
Which shoots faster bursts — the EOS R100 or the EOS R6 Mark III?
EOS R100 reaches 6.5 fps electronic. EOS R6 Mark III reaches 40 fps electronic.
What's the weight difference between the EOS R100 and EOS R6 Mark III?
EOS R100 weighs 356 g and EOS R6 Mark III weighs 699 g, so the EOS R100 is 343 g lighter.
Do the EOS R100 and EOS R6 Mark III record 4K video?
EOS R100: 4K up to 24p. EOS R6 Mark III: 4K up to 120p.
Are the EOS R100 and EOS R6 Mark III weather sealed?
EOS R100: No. EOS R6 Mark III: Yes.
Which has better battery life?
Rated battery life is 430 shots (CIPA) for the EOS R100 and 640 shots for the EOS R6 Mark III, giving the EOS R6 Mark III the edge.
How much does each cost?
EOS R100 launched at $479 and EOS R6 Mark III at $2,799. The EOS R100 is $2,320 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Canon press materials.