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
Sony
Alpha 99 II
42MP A-mount flagship with translucent mirror, 12fps, and 5-axis IBIS for Sony/Minolta lenses.
$3,199
Launch priceReleased Nov 2016
Alpha 7S III is 3.8 years newer.
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Wins
Alpha 7S III
Wins
Alpha 99 II
5 categories tied
Which would you choose?
TL;DR — Key differences
- AAlpha 7S III has higher ISO max (native) (102,400 vs 25,600)
- AAlpha 7S III has higher Max video bit rate (600 Mbps vs 150 Mbps)
- BAlpha 99 II has higher Resolution (42.4 MP vs 12.1 MP)
- AAlpha 7S III has higher EVF resolution (9,437,184 vs 3,690,000)
- BAlpha 99 II has higher Burst (electronic) (20 fps vs 10 fps)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to shareAlpha 7S III
129 × 97 × 81 mm
699 g (1.54 lb / 24.66 oz)
Credit card
85.6 × 54 mm
for scale
Alpha 99 II
143 × 105 × 82 mm
849 g (1.87 lb / 29.95 oz)
Alpha 7S III is 14mm narrower, 8mm shorter, and 1mm thinner than Alpha 99 II.
Alpha 7S III is 150 g lighter than Alpha 99 II.
Depth (front-to-back): 81mm Alpha 7S III · 82mm Alpha 99 II
Sensor size, to scale
Alpha 7S III
35.6 × 23.8 mm · Full Frame
847 mm² area
Alpha 99 II
35.9 × 24 mm · Full Frame
862 mm² area
Lens ecosystem
Native lens selection
Alpha 7S III
✓ more lensesSony E
350+
native lenses available
Alpha 99 II: 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
Alpha 7S III
AF low-light limit
-6 EV vs -4 EV — lower 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 3,690,000 — higher is better
Codecs
Adds XAVC HS, XAVC S, XAVC S-I
4K max frame rate
120 fps vs 60 fps — higher is better
Internal RAW video
Only Alpha 7S III supports it
Reasons to choose
Alpha 99 II
Dimensions (W×H×D mm)
Adds 142.6, 104.8, 81.6
Resolution
42.4 MP vs 12.1 MP — higher is better
Subject recognition
Adds Bird, Vehicle
Burst (electronic)
20 fps vs 10 fps — higher is better
Pre-Capture / Pre-Release
Only Alpha 99 II supports it
Battery life (CIPA)
640 shots vs 600 shots — higher is better
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
- ✓Animal / bird AF — Both support animal / bird af
- ✓RAW buffer depth — Both 120 frames
Pros & cons at a glance
Editorially curated highlights and trade-offs.
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
Alpha 99 II
Pros
- ✓42MP A-mount
- ✓5-axis IBIS
- ✓12fps
- ✓Huge Minolta lens library
Cons
- –A-mount declining
- –Translucent mirror system
- –Large body
Decided which one is right for you?
Compare live prices for the Alpha 7S III and Alpha 99 II at major authorized retailers.
Sony Alpha 7S III
Sony Alpha 99 II
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for wildlife, Alpha 7S III or Alpha 99 II?
Alpha 99 II scores 9.0/10 versus 5.5/10 for Alpha 7S III — 20fps burst captures fleeting moments.
What's the resolution difference between the Alpha 7S III and Alpha 99 II?
Alpha 7S III is 12.1 MP and Alpha 99 II is 42.4 MP, so the Alpha 99 II captures more detail for cropping and large prints.
Do the Alpha 7S III and Alpha 99 II have in-body image stabilization?
Alpha 7S III has 5.5-stop in-body image stabilization, while Alpha 99 II has 4.5-stop in-body image stabilization.
Which shoots faster bursts — the Alpha 7S III or the Alpha 99 II?
Alpha 7S III reaches 10 fps electronic. Alpha 99 II reaches 20 fps electronic.
What's the weight difference between the Alpha 7S III and Alpha 99 II?
Alpha 7S III weighs 699 g and Alpha 99 II weighs 849 g, so the Alpha 7S III is 150 g lighter.
Do the Alpha 7S III and Alpha 99 II record 4K video?
Alpha 7S III: 4K up to 120p. Alpha 99 II: 4K up to 60p.
Are the Alpha 7S III and Alpha 99 II weather sealed?
Alpha 7S III: Yes. Alpha 99 II: Yes.
Which has better battery life?
Rated battery life is 600 shots (CIPA) for the Alpha 7S III and 640 shots for the Alpha 99 II, giving the Alpha 99 II the edge.
How much does each cost?
Alpha 7S III launched at $3,499 and Alpha 99 II at $3,199. The Alpha 99 II is $300 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way Alpha 7S III vs Alpha 99 II vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.