Sony
Alpha 7 IV
33MP hybrid all-rounder with 10-bit 4K 60p and AI-powered subject tracking.
$2,499
Released Oct 2021
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 2.3 years newer.
Wins
Alpha 7 IV
Wins
Alpha 9 III
4 categories tied
TL;DR — Key differences
- AAlpha 7 IV has higher Burst (mechanical) (10 fps vs 0 fps)
- BAlpha 9 III has higher Burst (electronic) (120 fps vs 10 fps)
- AAlpha 7 IV has higher RAW buffer depth (828 frames vs 200 frames)
- BAlpha 9 III has higher EVF resolution (9,437,184 vs 3,686,400)
- AAlpha 7 IV has lower ISO min (native) (100 vs 250)
Key specs at a glance
Size and weight, to scale
Alpha 7 IV
131 × 96 × 80 mm
658 g (1.45 lb / 23.21 oz)
Alpha 9 III
136 × 97 × 83 mm
703 g (1.55 lb / 24.80 oz)
Alpha 7 IV is 5mm narrower, 1mm shorter, and 3mm thinner than Alpha 9 III.
Alpha 7 IV is 45 g lighter than Alpha 9 III.
Depth (front-to-back): 80mm Alpha 7 IV · 83mm Alpha 9 III
Sensor size, to scale
Alpha 7 IV
35.9 × 23.9 mm · Full Frame
858 mm² area
Alpha 9 III
35.6 × 23.8 mm · Full Frame
847 mm² area
Lens ecosystem
Native lens selection
Alpha 7 IV
✓ 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 7 IV
Burst (mechanical)
10 fps vs 0 fps — higher is better
Dimensions (W×H×D mm)
Adds 131.3, 96.4, 79.8
RAW buffer depth
828 frames vs 200 frames — higher is better
ISO min (native)
100 vs 250 — lower is better
ISO max (native)
51,200 vs 25,600 — higher is better
Battery life (CIPA)
580 shots vs 400 shots — higher is better
Resolution
33 MP vs 24.6 MP — higher is better
Weight
658 g vs 703 g — lower is better
Reasons to choose
Alpha 9 III
AF low-light limit
-5 EV vs -4 EV — lower is better
Dimensions (W×H×D mm)
Adds 136.1, 96.9, 82.9
Burst (electronic)
120 fps vs 10 fps — higher is better
EVF resolution
9,437,184 vs 3,686,400 — higher is better
Pre-Capture / Pre-Release
Only Alpha 9 III supports it
4K max frame rate
120 fps vs 60 fps — higher is better
EVF refresh rate
240 Hz vs 120 Hz — higher is better
IBIS effectiveness
8 stops vs 5.5 stops — 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
- ✓Max video bit rate — Both 600 Mbps
Pros & cons at a glance
Editorially curated highlights and trade-offs.
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
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
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for sports, Alpha 7 IV or Alpha 9 III?
Alpha 9 III scores 9.0/10 versus 6.0/10 for Alpha 7 IV — 120fps burst — pro-level action capture.
What's the resolution difference between the Alpha 7 IV and Alpha 9 III?
Alpha 7 IV is 33 MP and Alpha 9 III is 24.6 MP, so the Alpha 7 IV captures more detail for cropping and large prints.
Do the Alpha 7 IV and Alpha 9 III have in-body image stabilization?
Alpha 7 IV has 5.5-stop in-body image stabilization, while alpha 9 III has 8-stop in-body image stabilization.
Which shoots faster bursts — the Alpha 7 IV or the Alpha 9 III?
Alpha 7 IV reaches 10 fps electronic. Alpha 9 III reaches 120 fps electronic.
What's the weight difference between the Alpha 7 IV and Alpha 9 III?
Alpha 7 IV weighs 658 g and Alpha 9 III weighs 703 g, so the Alpha 7 IV is 45 g lighter.
Do the Alpha 7 IV and Alpha 9 III record 4K video?
Alpha 7 IV: 4K up to 60p. Alpha 9 III: 4K up to 120p.
Are the Alpha 7 IV and Alpha 9 III weather sealed?
Alpha 7 IV: Yes. Alpha 9 III: Yes.
Which has better battery life?
Rated battery life is 580 shots (CIPA) for the Alpha 7 IV and 400 shots for the Alpha 9 III, giving the Alpha 7 IV the edge.
How much does each cost?
Alpha 7 IV launched at $2,499 and Alpha 9 III at $5,999. The Alpha 7 IV is $3,500 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Sony press materials.