Canon
EOS 800D
Entry APS-C DSLR (Rebel T7i) with Dual Pixel AF, 24MP, and articulating touchscreen.
$749
Launch priceReleased Feb 2017
Canon
EOS R3
Pro 24MP full-frame stacked-sensor body built for sports, news, wildlife, and high-speed hybrid capture.
$5,999
Launch priceReleased Sep 2021
EOS R3 is 4.6 years newer.
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Wins
EOS 800D
Wins
EOS R3
4 categories tied
Which would you choose?
TL;DR — Key differences
- BEOS R3 has higher IBIS effectiveness (8 stops vs 0 stops)
- BEOS R3 has higher Max video bit rate (2600 Mbps vs 150 Mbps)
- BEOS R3 has higher ISO max (native) (102,400 vs 25,600)
- BEOS R3 has higher Burst (electronic) (30 fps vs 11 fps)
- BEOS R3 has higher RAW buffer depth (150 frames vs 60 frames)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to shareEOS 800D
131 × 100 × 76 mm
532 g (1.17 lb / 18.77 oz)
Credit card
85.6 × 54 mm
for scale
EOS R3
150 × 143 × 87 mm
1015 g (2.24 lb / 35.80 oz)
EOS 800D is 19mm narrower, 43mm shorter, and 11mm thinner than EOS R3.
EOS 800D is 483 g lighter than EOS R3.
Depth (front-to-back): 76mm EOS 800D · 87mm EOS R3
Sensor size, to scale
EOS 800D
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 800D
✓ more lensesCanon EF
300+
native lenses available
EOS R3
Canon 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 800D
Subject recognition
Adds Human, Animal, Bird…
Dimensions (W×H×D mm)
Adds 131, 100, 76.2
Weight
532 g vs 1015 g — lower is better
Battery life (CIPA)
640 shots vs 620 shots — higher is better
EVF magnification
0.78 × vs 0.76 × — higher is better
Resolution
24.2 MP vs 24.1 MP — higher is better
Reasons to choose
EOS R3
AF low-light limit
-7.5 EV vs -6.5 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
Max video bit rate
2600 Mbps vs 150 Mbps — higher is better
ISO max (native)
102,400 vs 25,600 — higher is better
Burst (electronic)
30 fps vs 11 fps — higher is better
RAW buffer depth
150 frames vs 60 frames — 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
- ✓EVF refresh rate — Both 120 Hz
Pros & cons at a glance
Editorially curated highlights and trade-offs.
EOS 800D
Pros
- ✓Dual Pixel AF
- ✓Articulating screen
- ✓24MP APS-C
- ✓Good beginner DSLR
Cons
- –Superseded by T8i
- –No IBIS
- –DSLR declining
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
Decided which one is right for you?
Compare live prices for the EOS 800D and EOS R3 at major authorized retailers.
Canon EOS 800D
Canon EOS R3
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for landscape, EOS 800D or EOS R3?
EOS R3 scores 7.0/10 versus 1.5/10 for EOS 800D — Full-frame sensor — wider dynamic range.
What's the resolution difference between the EOS 800D and EOS R3?
EOS 800D is 24.2 MP and EOS R3 is 24.1 MP, so the EOS 800D captures more detail for cropping and large prints.
Do the EOS 800D and EOS R3 have in-body image stabilization?
EOS 800D does not have IBIS, while EOS R3 has 8-stop in-body image stabilization.
Which shoots faster bursts — the EOS 800D or the EOS R3?
EOS 800D reaches 11 fps electronic. EOS R3 reaches 30 fps electronic.
What's the weight difference between the EOS 800D and EOS R3?
EOS 800D weighs 532 g and EOS R3 weighs 1015 g, so the EOS 800D is 483 g lighter.
Do the EOS 800D and EOS R3 record 4K video?
EOS 800D: 4K up to 60p. EOS R3: 6K RAW (max), 4K up to 120p.
Are the EOS 800D and EOS R3 weather sealed?
EOS 800D: No. EOS R3: Yes.
Which has better battery life?
Rated battery life is 640 shots (CIPA) for the EOS 800D and 620 shots for the EOS R3, giving the EOS 800D the edge.
How much does each cost?
EOS 800D launched at $749 and EOS R3 at $5,999. The EOS 800D is $5,250 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way EOS 800D vs EOS R3 vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.