Sony
Alpha 6400
Popular APS-C body with fast AF and 11fps burst for enthusiasts.
$899
Launch priceReleased Feb 2019
Sony
Alpha 7 III
Classic 24MP hybrid that defined the modern full-frame value proposition.
$1,999
Launch priceReleased Feb 2018
Alpha 6400 is 1 year newer.
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Wins
Alpha 6400
Wins
Alpha 7 III
6 categories tied
Which would you choose?
TL;DR — Key differences
- BAlpha 7 III has higher IBIS effectiveness (5 stops vs 0 stops)
- BAlpha 7 III has higher Card slots (2 vs 1)
- BAlpha 7 III has higher Battery life (CIPA) (710 shots vs 360 shots)
- BAlpha 7 III has higher RAW buffer depth (89 frames vs 46 frames)
- BAlpha 7 III has higher AF points / zones (693 vs 425)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to share
Alpha 6400
120 × 67 × 60 mm
403 g (0.89 lb / 14.22 oz)
Credit card
85.6 × 54 mm
for scale
Alpha 7 III
127 × 96 × 74 mm
650 g (1.43 lb / 22.93 oz)
Alpha 6400 is 7mm narrower, 29mm shorter, and 14mm thinner than Alpha 7 III.
Alpha 6400 is 247 g lighter than Alpha 7 III.
Depth (front-to-back): 60mm Alpha 6400 · 74mm Alpha 7 III
Back view, to scale
Width × Height — same proportions as the front of the body.
Alpha 6400
120 × 67 mm
Credit card
85.6 × 54 mm
Alpha 7 III
127 × 96 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
Alpha 6400
120 × 60 mm
Credit card
85.6 × 54 mm
Alpha 7 III
127 × 74 mm
Sensor size, to scale
Alpha 6400
23.5 × 15.6 mm · APS-C
367 mm² area
Alpha 7 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 6400
✓ more lensesSony E
350+
native lenses available
Alpha 7 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 6400
Dimensions (W×H×D mm)
Adds 120, 66.9, 59.7
Card types
Adds SD, SDHC, SDXC…
Weight
403 g vs 650 g — lower is better
EVF magnification
1.07 × vs 0.78 × — higher is better
Burst (mechanical)
11 fps vs 10 fps — higher is better
Burst (electronic)
11 fps vs 10 fps — higher is better
Reasons to choose
Alpha 7 III
AF low-light limit
-3 EV vs -2 EV — lower is better
IBIS effectiveness
5 stops vs 0 stops — higher is better
Dimensions (W×H×D mm)
Adds 126.9, 95.6, 73.7
Card types
Adds SD UHS-II, SD UHS-I
AA filter
Only Alpha 7 III supports it
In-body stabilization (IBIS)
Only Alpha 7 III supports it
Card slots
2 vs 1 — higher is better
Battery life (CIPA)
710 shots vs 360 shots — higher is better
Both cameras share
- ✓Resolution — Both 24.2 MP
- ✓ISO min (native) — Both 100
- ✓AF frame coverage — Both 94 %
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
- ✓Max video bit rate — Both 100 Mbps
Pros & cons at a glance
Editorially curated highlights and trade-offs.
Alpha 6400
Pros
- ✓Fast AF
- ✓Compact
- ✓Great value
Cons
- –No IBIS
- –Older design
- –No headphone jack
Alpha 7 III
Pros
- ✓Proven reliability
- ✓Great battery life
- ✓Strong value used
- ✓Dual card slots
Cons
- –Older AF vs newer bodies
- –4K 30p only
- –No 10-bit internal
Decided which one is right for you?
Compare live prices for the Alpha 6400 and Alpha 7 III at major authorized retailers.
Sony Alpha 6400
Sony Alpha 7 III
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for landscape, Alpha 6400 or Alpha 7 III?
Alpha 7 III scores 7.0/10 versus 3.0/10 for Alpha 6400 — Full-frame sensor — wider dynamic range.
What's the resolution difference between the Alpha 6400 and Alpha 7 III?
Both cameras share the same 24.2 MP resolution.
Do the Alpha 6400 and Alpha 7 III have in-body image stabilization?
Alpha 6400 does not have IBIS, while Alpha 7 III has 5-stop in-body image stabilization.
Which shoots faster bursts — the Alpha 6400 or the Alpha 7 III?
Alpha 6400 reaches 11 fps electronic. Alpha 7 III reaches 10 fps electronic.
What's the weight difference between the Alpha 6400 and Alpha 7 III?
Alpha 6400 weighs 403 g and Alpha 7 III weighs 650 g, so the Alpha 6400 is 247 g lighter.
Do the Alpha 6400 and Alpha 7 III record 4K video?
Alpha 6400: 4K up to 29.97p. Alpha 7 III: 4K up to 30p.
Are the Alpha 6400 and Alpha 7 III weather sealed?
Alpha 6400: Yes. Alpha 7 III: Yes.
Which has better battery life?
Rated battery life is 360 shots (CIPA) for the Alpha 6400 and 710 shots for the Alpha 7 III, giving the Alpha 7 III the edge.
How much does each cost?
Alpha 6400 launched at $899 and Alpha 7 III at $1,999. The Alpha 6400 is $1,100 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way Alpha 6400 vs Alpha 7 III vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed July 2026.
Product images courtesy of Sony press materials.