Sony
Alpha 6100
Compact APS-C body with real-time Eye AF, 11fps burst, and 4K video for beginners stepping up.
$749
Launch priceReleased Aug 2019
Sony
Alpha 7S III
12MP low-light video specialist with 4K 120p, 16-bit RAW HDMI, and excellent autofocus.
$3,499
Launch priceReleased Sep 2020
Alpha 7S III is 1 year newer.
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Wins
Alpha 6100
Wins
Alpha 7S III
3 categories tied
Which would you choose?
TL;DR — Key differences
- BAlpha 7S III has higher IBIS effectiveness (5.5 stops vs 0 stops)
- BAlpha 7S III has higher ISO max (native) (102,400 vs 25,600)
- BAlpha 7S III has higher Max video bit rate (600 Mbps vs 150 Mbps)
- BAlpha 7S III has higher EVF resolution (9,437,184 vs 2,360,000)
- AAlpha 6100 has higher Resolution (24.2 MP vs 12.1 MP)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to shareAlpha 6100
120 × 67 × 60 mm
396 g (0.87 lb / 13.97 oz)
Credit card
85.6 × 54 mm
for scale
Alpha 7S III
129 × 97 × 81 mm
699 g (1.54 lb / 24.66 oz)
Alpha 6100 is 9mm narrower, 30mm shorter, and 21mm thinner than Alpha 7S III.
Alpha 6100 is 303 g lighter than Alpha 7S III.
Depth (front-to-back): 60mm Alpha 6100 · 81mm Alpha 7S III
Sensor size, to scale
Alpha 6100
23.5 × 15.6 mm · APS-C
367 mm² area
Alpha 7S III
35.6 × 23.8 mm · Full Frame
847 mm² area
2.3× larger sensor area = shallower depth of field and better low-light performance.
Lens ecosystem
Native lens selection
Alpha 6100
✓ more lensesSony E
350+
native lenses available
Alpha 7S III
✓ 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
Alpha 6100
Dimensions (W×H×D mm)
Adds 120, 66.9, 59.7
Resolution
24.2 MP vs 12.1 MP — higher is better
Subject recognition
Adds Bird, Vehicle
Weight
396 g vs 699 g — lower is better
Burst (electronic)
11 fps vs 10 fps — higher is better
Battery life (CIPA)
640 shots vs 600 shots — higher is better
Reasons to choose
Alpha 7S III
AF low-light limit
-6 EV vs -4 EV — lower is better
IBIS effectiveness
5.5 stops vs 0 stops — higher is better
Dimensions (W×H×D mm)
Adds 128.9, 96.9, 80.8
ISO max (native)
102,400 vs 25,600 — higher is better
Max video bit rate
600 Mbps vs 150 Mbps — higher is better
EVF resolution
9,437,184 vs 2,360,000 — higher is better
Codecs
Adds XAVC HS, XAVC S, XAVC S-I
Animal / bird AF
Only Alpha 7S III supports it
Both cameras share
- ✓AA filter — Both support aa filter
- ✓AF points / zones — Both 759
- ✓AF frame coverage — Both 94 %
- ✓Eye AF — Both support eye af
- ✓EVF refresh rate — Both 120 Hz
- ✓Wi-Fi — Both support wi-fi
Pros & cons at a glance
Editorially curated highlights and trade-offs.
Alpha 6100
Pros
- ✓Real-time Eye AF
- ✓11fps burst
- ✓Compact body
- ✓Affordable E-mount
Cons
- –No IBIS
- –Small grip
- –Superseded by newer APS-C
Alpha 7S III
Pros
- ✓Best-in-class low light
- ✓4K 120p
- ✓Full-size HDMI
- ✓Strong IBIS
Cons
- –12MP stills limit
- –Older generation now
- –No 8K
Decided which one is right for you?
Compare live prices for the Alpha 6100 and Alpha 7S III at major authorized retailers.
Sony Alpha 6100
Sony Alpha 7S III
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for landscape, Alpha 6100 or Alpha 7S III?
Alpha 7S III scores 5.5/10 versus 1.5/10 for Alpha 6100 — Full-frame sensor — wider dynamic range.
What's the resolution difference between the Alpha 6100 and Alpha 7S III?
Alpha 6100 is 24.2 MP and Alpha 7S III is 12.1 MP, so the Alpha 6100 captures more detail for cropping and large prints.
Do the Alpha 6100 and Alpha 7S III have in-body image stabilization?
Alpha 6100 does not have IBIS, while Alpha 7S III has 5.5-stop in-body image stabilization.
Which shoots faster bursts — the Alpha 6100 or the Alpha 7S III?
Alpha 6100 reaches 11 fps electronic. Alpha 7S III reaches 10 fps electronic.
What's the weight difference between the Alpha 6100 and Alpha 7S III?
Alpha 6100 weighs 396 g and Alpha 7S III weighs 699 g, so the Alpha 6100 is 303 g lighter.
Do the Alpha 6100 and Alpha 7S III record 4K video?
Alpha 6100: 4K up to 60p. Alpha 7S III: 4K up to 120p.
Are the Alpha 6100 and Alpha 7S III weather sealed?
Alpha 6100: No. Alpha 7S III: Yes.
Which has better battery life?
Rated battery life is 640 shots (CIPA) for the Alpha 6100 and 600 shots for the Alpha 7S III, giving the Alpha 6100 the edge.
How much does each cost?
Alpha 6100 launched at $749 and Alpha 7S III at $3,499. The Alpha 6100 is $2,750 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way Alpha 6100 vs Alpha 7S III vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.