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
Pentax
K-70
Weather-sealed APS-C DSLR with IBIS and AA filter simulator.
$649
Launch priceReleased Jun 2016
EOS R3 is 5.3 years newer.
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Wins
EOS R3
Wins
K-70
3 categories tied
Which would you choose?
TL;DR — Key differences
- AEOS R3 has higher AF points / zones (1053 vs 11)
- AEOS R3 has higher Max video bit rate (2600 Mbps vs 150 Mbps)
- AEOS R3 has higher RAW buffer depth (150 frames vs 10 frames)
- AEOS R3 has higher EVF resolution (5,760,000 vs 2,360,000)
- BK-70 has higher ISO max (native) (204,800 vs 102,400)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to shareEOS R3
150 × 143 × 87 mm
1015 g (2.24 lb / 35.80 oz)
Credit card
85.6 × 54 mm
for scale
K-70
126 × 93 × 74 mm
688 g (1.52 lb / 24.27 oz)
EOS R3 is 25mm wider, 50mm taller, and 13mm thicker than K-70.
EOS R3 is 327 g heavier than K-70.
Depth (front-to-back): 87mm EOS R3 · 74mm K-70
Back view, to scale
Width × Height — same proportions as the front of the body.
EOS R3
150 × 143 mm
Credit card
85.6 × 54 mm
K-70
126 × 93 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
EOS R3
150 × 87 mm
Credit card
85.6 × 54 mm
K-70
126 × 74 mm
Sensor size, to scale
EOS R3
36 × 24 mm · Full Frame
864 mm² area
K-70
23.5 × 15.6 mm · APS-C
367 mm² area
2.4× larger sensor area = shallower depth of field and better low-light performance.
Lens ecosystem
Native lens selection
EOS R3
✓ more lensesCanon RF
105+
native lenses available
K-70
Pentax K
70+
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 R3
AF low-light limit
-7.5 EV vs -3 EV — lower is better
Subject recognition
Adds People, Dogs, Cats…
Dimensions (W×H×D mm)
Adds 150, 142.6, 87.2
Card types
Adds CFexpress Type B, SD UHS-II
AF points / zones
1053 vs 11 — higher is better
Max video bit rate
2600 Mbps vs 150 Mbps — higher is better
RAW buffer depth
150 frames vs 10 frames — higher is better
Codecs
Adds RAW, H.265
Reasons to choose
K-70
Subject recognition
Adds Human, Animal, Bird…
Dimensions (W×H×D mm)
Adds 125.5, 93, 74
Card types
Adds SD, SDHC, SDXC
ISO max (native)
204,800 vs 102,400 — higher is better
Pre-Capture / Pre-Release
Only K-70 supports it
Weight
688 g vs 1015 g — lower is better
EVF magnification
0.95 × vs 0.76 × — higher is better
Resolution
24.2 MP vs 24.1 MP — higher is better
Both cameras share
- ✓ISO min (native) — Both 100
- ✓AF frame coverage — Both 100 %
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
- ✓In-body stabilization (IBIS) — Both support in-body stabilization (ibis)
- ✓Weather sealing — Both support weather sealing
Pros & cons at a glance
Editorially curated highlights and trade-offs.
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
K-70
Pros
- ✓Weather sealed entry
- ✓IBIS in DSLR
- ✓Unique features
Cons
- –DSLR
- –24MP dated
- –Limited video
Decided which one is right for you?
Compare live prices for the EOS R3 and K-70 at major authorized retailers.
Canon EOS R3
Pentax K-70
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for wildlife, EOS R3 or K-70?
K-70 scores 10.0/10 versus 5.0/10 for EOS R3 — Bird AF subject recognition.
What's the resolution difference between the EOS R3 and K-70?
EOS R3 is 24.1 MP and K-70 is 24.2 MP, so the K-70 captures more detail for cropping and large prints.
Do the EOS R3 and K-70 have in-body image stabilization?
EOS R3 has 8-stop in-body image stabilization, while K-70 has 6-stop in-body image stabilization.
Which shoots faster bursts — the EOS R3 or the K-70?
EOS R3 reaches 30 fps electronic. K-70 reaches 15 fps electronic.
What's the weight difference between the EOS R3 and K-70?
EOS R3 weighs 1015 g and K-70 weighs 688 g, so the K-70 is 327 g lighter.
Do the EOS R3 and K-70 record 4K video?
EOS R3: 6K RAW (max), 4K up to 120p. K-70: 4K up to 60p.
Are the EOS R3 and K-70 weather sealed?
EOS R3: Yes. K-70: Yes.
How much does each cost?
EOS R3 launched at $5,999 and K-70 at $649. The K-70 is $5,350 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way EOS R3 vs K-70 vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed July 2026.
Product images courtesy of Canon and Pentax press materials.