Sony
Alpha 1
Original 50MP stacked flagship for sports and wildlife pros.
$6,499
Launch priceReleased Jan 2021
Sony
Alpha 7R III
42MP workhorse for landscape and studio before the A7R IV/V era.
$3,199
Launch priceReleased Oct 2017
Alpha 1 is 3.3 years newer.
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Wins
Alpha 1
Wins
Alpha 7R III
7 categories tied
Which would you choose?
TL;DR — Key differences
- AAlpha 1 has higher 4K max frame rate (120 fps vs 30 fps)
- AAlpha 1 has higher Burst (electronic) (30 fps vs 10 fps)
- AAlpha 1 has higher EVF resolution (9,437,184 vs 3,686,400)
- AAlpha 1 has higher EVF refresh rate (240 Hz vs 120 Hz)
- AAlpha 1 has higher AF points / zones (759 vs 399)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to share
Alpha 1
129 × 97 × 81 mm
737 g (1.62 lb / 26.00 oz)
Credit card
85.6 × 54 mm
for scale
Alpha 7R III
127 × 96 × 74 mm
657 g (1.45 lb / 23.18 oz)
Alpha 1 is 2mm wider, 1mm taller, and 7mm thicker than Alpha 7R III.
Alpha 1 is 80 g heavier than Alpha 7R III.
Depth (front-to-back): 81mm Alpha 1 · 74mm Alpha 7R III
Back view, to scale
Width × Height — same proportions as the front of the body.
Alpha 1
129 × 97 mm
Credit card
85.6 × 54 mm
Alpha 7R III
127 × 96 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
Alpha 1
129 × 81 mm
Credit card
85.6 × 54 mm
Alpha 7R III
127 × 74 mm
Sensor size, to scale
Alpha 1
35.9 × 24 mm · Full Frame
862 mm² area
Alpha 7R III
35.9 × 24 mm · Full Frame
862 mm² area
Lens ecosystem
Native lens selection
Alpha 1
✓ more lensesSony E
350+
native lenses available
Alpha 7R 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 1
AF low-light limit
-4 EV vs -3 EV — lower is better
Dimensions (W×H×D mm)
Adds 128.9, 96.9, 80.8
4K max frame rate
120 fps vs 30 fps — higher is better
Burst (electronic)
30 fps vs 10 fps — higher is better
EVF resolution
9,437,184 vs 3,686,400 — higher is better
Codecs
Adds XAVC HS, XAVC S-I, H.265
Internal RAW video
Only Alpha 1 supports it
Card types
Adds CFexpress Type A
Reasons to choose
Alpha 7R III
Dimensions (W×H×D mm)
Adds 126.9, 95.6, 73.7
Card types
Adds SD UHS-I
Codecs
Adds AVCHD
Battery life (CIPA)
650 shots vs 530 shots — higher is better
Weight
657 g vs 737 g — lower is better
Both cameras share
- ✓AA filter — Both support aa filter
- ✓ISO min (native) — Both 100
- ✓ISO max (native) — Both 32,000
- ✓AF frame coverage — Both 94 %
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
Pros & cons at a glance
Editorially curated highlights and trade-offs.
Alpha 1
Pros
- ✓50MP stacked
- ✓30fps burst
- ✓8K video
- ✓Pro AF
Cons
- –Superseded by A1 II
- –Very expensive
- –Large files
Alpha 7R III
Pros
- ✓42MP proven
- ✓10fps with AF
- ✓Dual slots
- ✓Great used value
Cons
- –Superseded
- –No 8K
- –Older AF
Decided which one is right for you?
Compare live prices for the Alpha 1 and Alpha 7R III at major authorized retailers.
Sony Alpha 1
Sony Alpha 7R III
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for sports, Alpha 1 or Alpha 7R III?
Alpha 1 scores 8.0/10 versus 3.5/10 for Alpha 7R III — 30fps burst — pro-level action capture.
What's the resolution difference between the Alpha 1 and Alpha 7R III?
Alpha 1 is 50.1 MP and Alpha 7R III is 42.4 MP, so the Alpha 1 captures more detail for cropping and large prints.
Do the Alpha 1 and Alpha 7R III have in-body image stabilization?
Alpha 1 has 5.5-stop in-body image stabilization, while Alpha 7R III has 5.5-stop in-body image stabilization.
Which shoots faster bursts — the Alpha 1 or the Alpha 7R III?
Alpha 1 reaches 30 fps electronic. Alpha 7R III reaches 10 fps electronic.
What's the weight difference between the Alpha 1 and Alpha 7R III?
Alpha 1 weighs 737 g and Alpha 7R III weighs 657 g, so the Alpha 7R III is 80 g lighter.
Do the Alpha 1 and Alpha 7R III record 4K video?
Alpha 1: 8K (max), 4K up to 120p. Alpha 7R III: 4K up to 30p.
Are the Alpha 1 and Alpha 7R III weather sealed?
Alpha 1: Yes. Alpha 7R III: Yes.
Which has better battery life?
Rated battery life is 530 shots (CIPA) for the Alpha 1 and 650 shots for the Alpha 7R III, giving the Alpha 7R III the edge.
How much does each cost?
Alpha 1 launched at $6,499 and Alpha 7R III at $3,199. The Alpha 7R III is $3,300 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way Alpha 1 vs Alpha 7R 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.