Canon
EOS 77D
Mid-tier APS-C DSLR with top LCD, Dual Pixel AF, and the same 24MP sensor as the 80D.
$899
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 77D
Wins
EOS R3
5 categories tied
Which would you choose?
TL;DR — Key differences
- 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 RAW buffer depth (150 frames vs 60 frames)
- BEOS R3 has higher EVF resolution (5,760,000 vs 2,360,000)
- BEOS R3 has higher Burst (mechanical) (12 fps vs 6 fps)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to shareEOS 77D
131 × 100 × 76 mm
540 g (1.19 lb / 19.05 oz)
Credit card
85.6 × 54 mm
for scale
EOS R3
150 × 143 × 87 mm
1015 g (2.24 lb / 35.80 oz)
EOS 77D is 19mm narrower, 43mm shorter, and 11mm thinner than EOS R3.
EOS 77D is 475 g lighter than EOS R3.
Depth (front-to-back): 76mm EOS 77D · 87mm EOS R3
Sensor size, to scale
EOS 77D
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 77D
✓ 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 77D
Subject recognition
Adds Human, Animal, Bird…
Dimensions (W×H×D mm)
Adds 131, 99.8, 76.2
Pre-Capture / Pre-Release
Only EOS 77D supports it
Weight
540 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…
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
RAW buffer depth
150 frames vs 60 frames — higher is better
EVF resolution
5,760,000 vs 2,360,000 — higher is better
Burst (mechanical)
12 fps vs 6 fps — 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
- ✓Animal / bird AF — Both support animal / bird af
Pros & cons at a glance
Editorially curated highlights and trade-offs.
EOS 77D
Pros
- ✓Top LCD
- ✓Dual Pixel AF
- ✓24MP APS-C
- ✓Lightweight DSLR
Cons
- –No weather sealing
- –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 77D and EOS R3 at major authorized retailers.
Canon EOS 77D
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 77D or EOS R3?
EOS R3 scores 7.0/10 versus 3.5/10 for EOS 77D — Full-frame sensor — wider dynamic range.
What's the resolution difference between the EOS 77D and EOS R3?
EOS 77D is 24.2 MP and EOS R3 is 24.1 MP, so the EOS 77D captures more detail for cropping and large prints.
Do the EOS 77D and EOS R3 have in-body image stabilization?
EOS 77D has 6-stop in-body image stabilization, while EOS R3 has 8-stop in-body image stabilization.
Which shoots faster bursts — the EOS 77D or the EOS R3?
EOS 77D reaches 15 fps electronic. EOS R3 reaches 30 fps electronic.
What's the weight difference between the EOS 77D and EOS R3?
EOS 77D weighs 540 g and EOS R3 weighs 1015 g, so the EOS 77D is 475 g lighter.
Do the EOS 77D and EOS R3 record 4K video?
EOS 77D: 4K up to 60p. EOS R3: 6K RAW (max), 4K up to 120p.
Are the EOS 77D and EOS R3 weather sealed?
EOS 77D: No. EOS R3: Yes.
Which has better battery life?
Rated battery life is 640 shots (CIPA) for the EOS 77D and 620 shots for the EOS R3, giving the EOS 77D the edge.
How much does each cost?
EOS 77D launched at $899 and EOS R3 at $5,999. The EOS 77D is $5,100 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way EOS 77D vs EOS R3 vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.