Sony
Alpha 6400
Popular APS-C body with fast AF and 11fps burst for enthusiasts.
$899
Launch priceReleased Feb 2019
Sony
Alpha 7R VI
66.8MP stacked full-frame high-resolution body with 30fps bursts, 8K 30p, 4K 120p, and Sony's AI processing unit.
$4,499
Launch priceReleased Jun 2026
Alpha 7R VI is 7.3 years newer.
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Wins
Alpha 6400
Wins
Alpha 7R VI
2 categories tied
Which would you choose?
TL;DR — Key differences
- BAlpha 7R VI has higher Max video bit rate (600 Mbps vs 100 Mbps)
- BAlpha 7R VI has higher 4K max frame rate (120 fps vs 29.97 fps)
- BAlpha 7R VI has higher EVF resolution (9,437,184 vs 2,359,296)
- BAlpha 7R VI has higher RAW buffer depth (150 frames vs 46 frames)
- BAlpha 7R VI has higher Resolution (66.8 MP vs 24.2 MP)
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 7R VI
133 × 97 × 83 mm
713 g (1.57 lb / 25.15 oz)
Alpha 6400 is 13mm narrower, 30mm shorter, and 23mm thinner than Alpha 7R VI.
Alpha 6400 is 310 g lighter than Alpha 7R VI.
Depth (front-to-back): 60mm Alpha 6400 · 83mm Alpha 7R VI
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 7R VI
133 × 97 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 7R VI
133 × 83 mm
Sensor size, to scale
Alpha 6400
23.5 × 15.6 mm · APS-C
367 mm² area
Alpha 7R VI
35.9 × 24 mm · Full Frame
862 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 7R VI
✓ 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…
Codecs
Adds AVCHD
Weather sealing
Only Alpha 6400 supports it
Weight
403 g vs 713 g — lower is better
EVF magnification
1.07 × vs 0.9 × — higher is better
Reasons to choose
Alpha 7R VI
AF low-light limit
-6 EV vs -2 EV — lower is better
Dimensions (W×H×D mm)
Adds 132.7, 96.9, 82.9
Card types
Adds CFexpress Type A, SDXC UHS-II
Max video bit rate
600 Mbps vs 100 Mbps — higher is better
Codecs
Adds XAVC HS, XAVC S-I, H.265…
4K max frame rate
120 fps vs 29.97 fps — higher is better
EVF resolution
9,437,184 vs 2,359,296 — higher is better
RAW buffer depth
150 frames vs 46 frames — higher is better
Both cameras share
- ✓ISO min (native) — Both 100
- ✓ISO max (native) — Both 32,000
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
- ✓Touchscreen — Both support touchscreen
- ✓Wi-Fi — Both support wi-fi
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 7R VI
Pros
- ✓66.8MP stacked full-frame sensor
- ✓30fps blackout-free electronic burst
- ✓8K 30p and 4K 120p video
- ✓5-axis sensor-shift stabilization
- ✓9.44M-dot HDR OLED EVF
Cons
- –Very expensive
- –Large files demand fast cards and storage
- –8K workflow can be heavy
Decided which one is right for you?
Compare live prices for the Alpha 6400 and Alpha 7R VI at major authorized retailers.
Sony Alpha 6400
Sony Alpha 7R VI
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for video, Alpha 6400 or Alpha 7R VI?
Alpha 7R VI scores 8.0/10 versus 2.0/10 for Alpha 6400 — 8K recording for future-proof footage.
What's the resolution difference between the Alpha 6400 and Alpha 7R VI?
Alpha 6400 is 24.2 MP and Alpha 7R VI is 66.8 MP, so the Alpha 7R VI captures more detail for cropping and large prints.
Do the Alpha 6400 and Alpha 7R VI have in-body image stabilization?
Alpha 6400 does not have IBIS, while Alpha 7R VI has in-body image stabilization.
Which shoots faster bursts — the Alpha 6400 or the Alpha 7R VI?
Alpha 6400 reaches 11 fps electronic. Alpha 7R VI reaches 30 fps electronic.
What's the weight difference between the Alpha 6400 and Alpha 7R VI?
Alpha 6400 weighs 403 g and Alpha 7R VI weighs 713 g, so the Alpha 6400 is 310 g lighter.
Do the Alpha 6400 and Alpha 7R VI record 4K video?
Alpha 6400: 4K up to 29.97p. Alpha 7R VI: 8K (max), 4K up to 120p.
Are the Alpha 6400 and Alpha 7R VI weather sealed?
Alpha 6400: Yes. Alpha 7R VI: No.
Which has better battery life?
Rated battery life is 360 shots (CIPA) for the Alpha 6400 and 600 shots for the Alpha 7R VI, giving the Alpha 7R VI the edge.
How much does each cost?
Alpha 6400 launched at $899 and Alpha 7R VI at $4,499. The Alpha 6400 is $3,600 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way Alpha 6400 vs Alpha 7R VI vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed July 2026.
Product images courtesy of Sony press materials.