Sony
Alpha 6600
APS-C with IBIS and huge NP-FZ100 battery in a compact body.
$1,399
Released Oct 2019
Sony
Alpha 9 III
Global shutter sports flagship with 120fps and zero rolling shutter for pro action.
$5,999
Released Jan 2024
Alpha 9 III is 4.3 years newer.
Wins
Alpha 6600
Wins
Alpha 9 III
1 categories tied
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TL;DR — Key differences
- AAlpha 6600 has higher Burst (mechanical) (11 fps vs 0 fps)
- BAlpha 9 III has higher Burst (electronic) (120 fps vs 11 fps)
- BAlpha 9 III has higher 4K max frame rate (120 fps vs 30 fps)
- BAlpha 9 III has higher Max video bit rate (600 Mbps vs 150 Mbps)
- BAlpha 9 III has higher EVF resolution (9,437,184 vs 2,359,296)
Key specs at a glance
Size and weight, to scale
Alpha 6600
120 × 67 × 69 mm
503 g (1.11 lb / 17.74 oz)
Alpha 9 III
136 × 97 × 83 mm
703 g (1.55 lb / 24.80 oz)
Alpha 6600 is 16mm narrower, 30mm shorter, and 14mm thinner than Alpha 9 III.
Alpha 6600 is 200 g lighter than Alpha 9 III.
Depth (front-to-back): 69mm Alpha 6600 · 83mm Alpha 9 III
Sensor size, to scale
Alpha 6600
23.5 × 15.6 mm · APS-C
367 mm² area
Alpha 9 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 6600
✓ more lensesSony E
350+
native lenses available
Alpha 9 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 6600
Burst (mechanical)
11 fps vs 0 fps — higher is better
Dimensions (W×H×D mm)
Adds 120, 66.9, 69.3
Card types
Adds SD UHS-I
ISO min (native)
100 vs 250 — lower is better
Battery life (CIPA)
810 shots vs 400 shots — higher is better
Codecs
Adds AVCHD
Weight
503 g vs 703 g — lower is better
ISO max (native)
32,000 vs 25,600 — higher is better
Reasons to choose
Alpha 9 III
AF low-light limit
-5 EV vs -2 EV — lower is better
Dimensions (W×H×D mm)
Adds 136.1, 96.9, 82.9
Card types
Adds CFexpress Type A, SD UHS-II
Burst (electronic)
120 fps vs 11 fps — higher is better
4K max frame rate
120 fps vs 30 fps — higher is better
Max video bit rate
600 Mbps vs 150 Mbps — higher is better
EVF resolution
9,437,184 vs 2,359,296 — higher is better
RAW buffer depth
200 frames vs 60 frames — higher is better
Both cameras share
- ✓AF frame coverage — Both 94 %
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
- ✓In-body stabilization — Both support in-body stabilization
- ✓Weather sealing — Both support weather sealing
- ✓Touchscreen — Both support touchscreen
Pros & cons at a glance
Editorially curated highlights and trade-offs.
Alpha 6600
Pros
- ✓IBIS in APS-C
- ✓Excellent battery
- ✓Real-time tracking AF
Cons
- –Older than A6700
- –Single slot
- –No 4K 60p
Alpha 9 III
Pros
- ✓Global shutter 120fps
- ✓Zero rolling shutter
- ✓Pro sports AF
- ✓Pre-capture buffer
Cons
- –24.6MP only
- –Premium price
- –Battery drain at max speed
Decided which one is right for you?
Compare live prices for the Alpha 6600 and Alpha 9 III at major authorized retailers.
Sony Alpha 6600
Sony Alpha 9 III
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for sports, Alpha 6600 or Alpha 9 III?
Alpha 9 III scores 9.0/10 versus 4.0/10 for Alpha 6600 — 120fps burst — pro-level action capture.
What's the resolution difference between the Alpha 6600 and Alpha 9 III?
Alpha 6600 is 24.2 MP and Alpha 9 III is 24.6 MP, so the Alpha 9 III captures more detail for cropping and large prints.
Do the Alpha 6600 and Alpha 9 III have in-body image stabilization?
Alpha 6600 has 5-stop in-body image stabilization, while alpha 9 III has 8-stop in-body image stabilization.
Which shoots faster bursts — the Alpha 6600 or the Alpha 9 III?
Alpha 6600 reaches 11 fps electronic. Alpha 9 III reaches 120 fps electronic.
What's the weight difference between the Alpha 6600 and Alpha 9 III?
Alpha 6600 weighs 503 g and Alpha 9 III weighs 703 g, so the Alpha 6600 is 200 g lighter.
Do the Alpha 6600 and Alpha 9 III record 4K video?
Alpha 6600: 4K up to 30p. Alpha 9 III: 4K up to 120p.
Are the Alpha 6600 and Alpha 9 III weather sealed?
Alpha 6600: Yes. Alpha 9 III: Yes.
Which has better battery life?
Rated battery life is 810 shots (CIPA) for the Alpha 6600 and 400 shots for the Alpha 9 III, giving the Alpha 6600 the edge.
How much does each cost?
Alpha 6600 launched at $1,399 and Alpha 9 III at $5,999. The Alpha 6600 is $4,600 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.