Sigma
sd Quattro
Foveon APS-C body delivering exceptional per-pixel detail for stills purists.
$999
Launch priceReleased Feb 2016
Sony
Alpha 7 IV
33MP hybrid all-rounder with 10-bit 4K 60p and AI-powered subject tracking.
$2,499
Launch priceReleased Oct 2021
Alpha 7 IV is 5.7 years newer.
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Wins
sd Quattro
Wins
Alpha 7 IV
3 categories tied
Which would you choose?
TL;DR — Key differences
- BAlpha 7 IV has higher AF points / zones (759 vs 9)
- BAlpha 7 IV has higher RAW buffer depth (828 frames vs 60 frames)
- BAlpha 7 IV has higher ISO max (native) (51,200 vs 6,400)
- BAlpha 7 IV has higher Max video bit rate (600 Mbps vs 150 Mbps)
- BAlpha 7 IV has higher Card slots (2 vs 1)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to share
sd Quattro
147 × 95 × 91 mm
625 g (1.38 lb / 22.05 oz)
Credit card
85.6 × 54 mm
for scale
Alpha 7 IV
131 × 96 × 80 mm
658 g (1.45 lb / 23.21 oz)
sd Quattro is 1mm shorter than Alpha 7 IV but it is also 16mm wider and 11mm thicker.
sd Quattro is 33 g lighter than Alpha 7 IV.
Depth (front-to-back): 91mm sd Quattro · 80mm Alpha 7 IV
Back view, to scale
Width × Height — same proportions as the front of the body.
sd Quattro
147 × 95 mm
Credit card
85.6 × 54 mm
Alpha 7 IV
131 × 96 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
sd Quattro
147 × 91 mm
Credit card
85.6 × 54 mm
Alpha 7 IV
131 × 80 mm
Sensor size, to scale
sd Quattro
23.5 × 15.5 mm · APS-C
364 mm² area
Alpha 7 IV
35.9 × 23.9 mm · Full Frame
858 mm² area
2.4× larger sensor area = shallower depth of field and better low-light performance.
Lens ecosystem
Native lens selection
sd Quattro: mount data unavailable
Alpha 7 IV
✓ 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
sd Quattro
Dimensions (W×H×D mm)
Adds 147, 95.1, 90.8
Card types
Adds SD, SDHC, SDXC
Pre-Capture / Pre-Release
Only sd Quattro supports it
Burst (electronic)
15 fps vs 10 fps — higher is better
EVF magnification
1.09 × vs 0.78 × — higher is better
Subject recognition
Adds Vehicle
Battery life (CIPA)
640 shots vs 580 shots — higher is better
IBIS effectiveness
6 stops vs 5.5 stops — higher is better
Reasons to choose
Alpha 7 IV
AF low-light limit
-4 EV vs -1 EV — lower is better
Dimensions (W×H×D mm)
Adds 131.3, 96.4, 79.8
Card types
Adds CFexpress Type A, SD UHS-II
AF points / zones
759 vs 9 — higher is better
RAW buffer depth
828 frames vs 60 frames — higher is better
ISO max (native)
51,200 vs 6,400 — higher is better
Max video bit rate
600 Mbps vs 150 Mbps — higher is better
Codecs
Adds XAVC HS, XAVC S, XAVC S-I
Both cameras share
- ✓ISO min (native) — Both 100
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
- ✓4K max frame rate — Both 60 fps
- ✓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.
sd Quattro
Pros
- ✓Unique Foveon color
- ✓High acutance
- ✓Distinct rendering
Cons
- –Slow
- –Poor high ISO
- –SA mount limited
Alpha 7 IV
Pros
- ✓33MP — more detail for cropping and print
- ✓10-bit 4K 60p (Super35 crop) / 4K 30p full-frame
- ✓Full-size HDMI port
- ✓759 phase-detect AF points
Cons
- –4K 60p requires Super35 crop
- –10fps burst lags behind R6 II at 40fps
- –Complex menu system
Decided which one is right for you?
Compare live prices for the sd Quattro and Alpha 7 IV at major authorized retailers.
Sigma sd Quattro
Sony Alpha 7 IV
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for landscape, sd Quattro or Alpha 7 IV?
Alpha 7 IV scores 7.5/10 versus 4.0/10 for sd Quattro — 33MP — ample resolution.
What's the resolution difference between the sd Quattro and Alpha 7 IV?
sd Quattro is 29 MP and Alpha 7 IV is 33 MP, so the Alpha 7 IV captures more detail for cropping and large prints.
Do the sd Quattro and Alpha 7 IV have in-body image stabilization?
sd Quattro has 6-stop in-body image stabilization, while Alpha 7 IV has 5.5-stop in-body image stabilization.
Which shoots faster bursts — the sd Quattro or the Alpha 7 IV?
sd Quattro reaches 15 fps electronic. Alpha 7 IV reaches 10 fps electronic.
What's the weight difference between the sd Quattro and Alpha 7 IV?
sd Quattro weighs 625 g and Alpha 7 IV weighs 658 g, so the sd Quattro is 33 g lighter.
Do the sd Quattro and Alpha 7 IV record 4K video?
sd Quattro: 4K up to 60p. Alpha 7 IV: 4K up to 60p.
Are the sd Quattro and Alpha 7 IV weather sealed?
sd Quattro: Yes. Alpha 7 IV: Yes.
Which has better battery life?
Rated battery life is 640 shots (CIPA) for the sd Quattro and 580 shots for the Alpha 7 IV, giving the sd Quattro the edge.
How much does each cost?
sd Quattro launched at $999 and Alpha 7 IV at $2,499. The sd Quattro is $1,500 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way sd Quattro vs Alpha 7 IV vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed July 2026.
Product images courtesy of Sigma and Sony press materials.