Canon
EOS R
Canon’s first full-frame RF mirrorless — launched the RF mount ecosystem.
$2,299
Launch priceReleased Sep 2018
Sony
Alpha 7
The original full-frame mirrorless that started the E-mount revolution — 24MP in a compact body.
$1,699
Launch priceReleased Oct 2013
EOS R is 4.9 years newer.
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Wins
EOS R
Wins
Alpha 7
4 categories tied
Which would you choose?
TL;DR — Key differences
- AEOS R has higher AF points / zones (5655 vs 759)
- BAlpha 7 has higher 4K max frame rate (60 fps vs 29.97 fps)
- BAlpha 7 has higher Card slots (2 vs 1)
- BAlpha 7 has higher Burst (electronic) (15 fps vs 8 fps)
- AEOS R has higher EVF resolution (3,690,000 vs 2,360,000)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to share
EOS R
136 × 98 × 84 mm
660 g (1.46 lb / 23.28 oz)
Credit card
85.6 × 54 mm
for scale
Alpha 7
127 × 94 × 48 mm
474 g (1.04 lb / 16.72 oz)
EOS R is 9mm wider, 4mm taller, and 36mm thicker than Alpha 7.
EOS R is 186 g heavier than Alpha 7.
Depth (front-to-back): 84mm EOS R · 48mm Alpha 7
Back view, to scale
Width × Height — same proportions as the front of the body.
EOS R
136 × 98 mm
Credit card
85.6 × 54 mm
Alpha 7
127 × 94 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
EOS R
136 × 84 mm
Credit card
85.6 × 54 mm
Alpha 7
127 × 48 mm
Sensor size, to scale
EOS R
36 × 24 mm · Full Frame
864 mm² area
Alpha 7
35.8 × 23.9 mm · Full Frame
856 mm² area
Lens ecosystem
Native lens selection
EOS R
Canon RF
105+
native lenses available
Alpha 7
✓ more lensesSony E
350+
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 R
AF low-light limit
-6 EV vs -4 EV — lower is better
Dimensions (W×H×D mm)
Adds 135.8, 98.3, 84.4
Card types
Adds SD, SDHC, SDXC
AF points / zones
5655 vs 759 — higher is better
Codecs
Adds MP4
EVF resolution
3,690,000 vs 2,360,000 — higher is better
ISO max (native)
40,000 vs 25,600 — higher is better
Burst (mechanical)
8 fps vs 6 fps — higher is better
Reasons to choose
Alpha 7
Dimensions (W×H×D mm)
Adds 126.9, 94.4, 48.2
Card types
Adds SD UHS-II
4K max frame rate
60 fps vs 29.97 fps — higher is better
Animal / bird AF
Only Alpha 7 supports it
Codecs
Adds H.265
Card slots
2 vs 1 — higher is better
Burst (electronic)
15 fps vs 8 fps — higher is better
Weight
474 g vs 660 g — lower is better
Both cameras share
- ✓AA filter — Both support aa filter
- ✓ISO min (native) — Both 100
- ✓Eye AF — Both support eye af
- ✓Pre-Capture / Pre-Release — Both support pre-capture / pre-release
- ✓Max video bit rate — Both 150 Mbps
- ✓In-body stabilization (IBIS) — Both support in-body stabilization (ibis)
Pros & cons at a glance
Editorially curated highlights and trade-offs.
EOS R
Pros
- ✓First Canon RF body
- ✓Dual Pixel AF
- ✓Fully articulating screen
Cons
- –No IBIS
- –Single card slot
- –Superseded by R6/R8
Alpha 7
Pros
- ✓Historic first FF mirrorless
- ✓Compact for era
- ✓24MP full-frame
- ✓Affordable used
Cons
- –Slow AF by modern standards
- –No IBIS
- –Superseded many times
Decided which one is right for you?
Compare live prices for the EOS R and Alpha 7 at major authorized retailers.
Canon EOS R
Sony Alpha 7
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for travel, EOS R or Alpha 7?
Alpha 7 scores 9.0/10 versus 5.5/10 for EOS R — 474g — ultralight for all-day carry.
What's the resolution difference between the EOS R and Alpha 7?
EOS R is 30.3 MP and Alpha 7 is 24.3 MP, so the EOS R captures more detail for cropping and large prints.
Do the EOS R and Alpha 7 have in-body image stabilization?
EOS R has 6-stop in-body image stabilization, while Alpha 7 has 6-stop in-body image stabilization.
Which shoots faster bursts — the EOS R or the Alpha 7?
EOS R reaches 8 fps electronic. Alpha 7 reaches 15 fps electronic.
What's the weight difference between the EOS R and Alpha 7?
EOS R weighs 660 g and Alpha 7 weighs 474 g, so the Alpha 7 is 186 g lighter.
Do the EOS R and Alpha 7 record 4K video?
EOS R: 4K up to 29.97p. Alpha 7: 4K up to 60p.
Are the EOS R and Alpha 7 weather sealed?
EOS R: Yes. Alpha 7: Yes.
How much does each cost?
EOS R launched at $2,299 and Alpha 7 at $1,699. The Alpha 7 is $600 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way EOS R vs Alpha 7 vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed July 2026.
Product images courtesy of Canon and Sony press materials.