Canon
EOS R7
32.5MP APS-C RF-mount body with 30fps burst, 4K 60p, 7-stop IBIS, and advanced subject tracking.
$1,499
Launch priceReleased May 2022
Sigma
sd1 Merrill
APS-C Foveon X3 body delivering extraordinary per-pixel detail and unique color rendering.
$2,299
Launch priceReleased Mar 2012
EOS R7 is 10.3 years newer.
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Wins
EOS R7
Wins
sd1 Merrill
4 categories tied
Which would you choose?
TL;DR — Key differences
- AEOS R7 has lower AF low-light limit (-5 EV vs 0 EV)
- AEOS R7 has higher AF points / zones (651 vs 49)
- AEOS R7 has higher Burst (mechanical) (15 fps vs 6 fps)
- AEOS R7 has higher Max video bit rate (340 Mbps vs 150 Mbps)
- AEOS R7 has higher Burst (electronic) (30 fps vs 15 fps)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to shareEOS R7
132 × 90 × 92 mm
612 g (1.35 lb / 21.59 oz)
Credit card
85.6 × 54 mm
for scale
sd1 Merrill
146 × 114 × 80 mm
680 g (1.50 lb / 23.99 oz)
EOS R7 is 14mm narrower and 23mm shorter than sd1 Merrill but it is also 12mm thicker.
EOS R7 is 68 g lighter than sd1 Merrill.
Depth (front-to-back): 92mm EOS R7 · 80mm sd1 Merrill
Back view, to scale
Width × Height — same proportions as the front of the body.
EOS R7
132 × 90 mm
Credit card
85.6 × 54 mm
sd1 Merrill
146 × 114 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
EOS R7
132 × 92 mm
Credit card
85.6 × 54 mm
sd1 Merrill
146 × 80 mm
Sensor size, to scale
EOS R7
22.3 × 14.8 mm · APS-C
330 mm² area
sd1 Merrill
23.5 × 15.7 mm · APS-C
369 mm² area
1.1× larger sensor area = shallower depth of field and better low-light performance.
Lens ecosystem
Native lens selection
EOS R7
✓ more lensesCanon RF
105+
native lenses available
sd1 Merrill: mount data unavailable
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 R7
AF low-light limit
-5 EV vs 0 EV — lower is better
Dimensions (W×H×D mm)
Adds 132, 90.4, 91.7
Card types
Adds SD UHS-II
AF points / zones
651 vs 49 — higher is better
Burst (mechanical)
15 fps vs 6 fps — higher is better
Max video bit rate
340 Mbps vs 150 Mbps — higher is better
AA filter
Only EOS R7 supports it
Burst (electronic)
30 fps vs 15 fps — higher is better
Reasons to choose
sd1 Merrill
Dimensions (W×H×D mm)
Adds 145.5, 113.5, 80
Card types
Adds CompactFlash
RAW buffer depth
60 frames vs 42 frames — higher is better
Resolution
46 MP vs 32.5 MP — higher is better
Both cameras share
- ✓ISO min (native) — Both 100
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
- ✓Pre-Capture / Pre-Release — Both support pre-capture / pre-release
- ✓4K max frame rate — Both 60 fps
- ✓In-body stabilization (IBIS) — Both support in-body stabilization (ibis)
Pros & cons at a glance
Editorially curated highlights and trade-offs.
EOS R7
Pros
- ✓High-resolution 32.5MP APS-C sensor
- ✓Up to 30fps electronic burst
- ✓7-stop in-body stabilization
- ✓Dual SD UHS-II card slots
- ✓Strong value for wildlife and sports reach
Cons
- –APS-C sensor trails full-frame in low-light depth
- –RF-S lens lineup is still limited
- –4K 60p uses a crop in some modes
sd1 Merrill
Pros
- ✓Unique Foveon rendering
- ✓Exceptional detail
- ✓No AA filter needed
- ✓Distinct look
Cons
- –Very slow
- –Poor high ISO
- –SA mount limited
Decided which one is right for you?
Compare live prices for the EOS R7 and sd1 Merrill at major authorized retailers.
Canon EOS R7
Sigma sd1 Merrill
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for sports, EOS R7 or sd1 Merrill?
EOS R7 scores 10.0/10 versus 6.5/10 for sd1 Merrill — 30fps burst — pro-level action capture.
What's the resolution difference between the EOS R7 and sd1 Merrill?
EOS R7 is 32.5 MP and sd1 Merrill is 46 MP, so the sd1 Merrill captures more detail for cropping and large prints.
Do the EOS R7 and sd1 Merrill have in-body image stabilization?
EOS R7 has 8-stop in-body image stabilization, while sd1 Merrill has 6-stop in-body image stabilization.
Which shoots faster bursts — the EOS R7 or the sd1 Merrill?
EOS R7 reaches 30 fps electronic. sd1 Merrill reaches 15 fps electronic.
What's the weight difference between the EOS R7 and sd1 Merrill?
EOS R7 weighs 612 g and sd1 Merrill weighs 680 g, so the EOS R7 is 68 g lighter.
Do the EOS R7 and sd1 Merrill record 4K video?
EOS R7: 4K up to 60p. sd1 Merrill: 4K up to 60p.
Are the EOS R7 and sd1 Merrill weather sealed?
EOS R7: Yes. sd1 Merrill: Yes.
Which has better battery life?
Rated battery life is 660 shots (CIPA) for the EOS R7 and 640 shots for the sd1 Merrill, giving the EOS R7 the edge.
How much does each cost?
EOS R7 launched at $1,499 and sd1 Merrill at $2,299. The EOS R7 is $800 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way EOS R7 vs sd1 Merrill vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.
Product images courtesy of Canon and Sigma press materials.