Sony
Alpha 1 II
50MP stacked flagship with 30fps RAW, 8K video, and Sony's fastest hybrid performance.
$6,499
Launch priceReleased Nov 2024
Sony
RX10 IV
1-inch bridge with 24–600mm f/2.4–4 zoom, 24fps AF tracking, and pro video features.
$1,699
Launch priceReleased Sep 2017
Alpha 1 II is 7.2 years newer.
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Wins
Alpha 1 II
Wins
RX10 IV
5 categories tied
Which would you choose?
TL;DR — Key differences
- AAlpha 1 II has higher 4K max frame rate (120 fps vs 29.97 fps)
- AAlpha 1 II has higher EVF resolution (9,437,184 vs 2,359,296)
- AAlpha 1 II has higher ISO max (native) (32,000 vs 12,800)
- AAlpha 1 II has higher Resolution (50.1 MP vs 20.1 MP)
- BRX10 IV has higher Burst (mechanical) (24 fps vs 10 fps)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to share
Alpha 1 II
136 × 97 × 83 mm
743 g (1.64 lb / 26.21 oz)
Credit card
85.6 × 54 mm
for scale
RX10 IV
133 × 94 × 145 mm
1095 g (2.41 lb / 38.63 oz)
Alpha 1 II is 62mm thinner than RX10 IV but it is also 4mm wider and 3mm taller.
Alpha 1 II is 352 g lighter than RX10 IV.
Depth (front-to-back): 83mm Alpha 1 II · 145mm RX10 IV
Back view, to scale
Width × Height — same proportions as the front of the body.
Alpha 1 II
136 × 97 mm
Credit card
85.6 × 54 mm
RX10 IV
133 × 94 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
Alpha 1 II
136 × 83 mm
Credit card
85.6 × 54 mm
RX10 IV
133 × 145 mm
Sensor size, to scale
Alpha 1 II
35.9 × 24 mm · Full Frame
862 mm² area
RX10 IV
13.2 × 8.8 mm · 1-inch
116 mm² area
7.4× larger sensor area = shallower depth of field and better low-light performance.
Lens ecosystem
Native lens selection
Alpha 1 II
✓ more lensesSony E
350+
native lenses available
RX10 IV: mount data unavailable
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 II
Dimensions (W×H×D mm)
Adds 136.1, 96.9, 82.9
Card types
Adds CFexpress Type A, SD UHS-II
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
ISO max (native)
32,000 vs 12,800 — higher is better
Resolution
50.1 MP vs 20.1 MP — higher is better
Subject recognition
Adds Insect, Car/Train, Airplane
Reasons to choose
RX10 IV
Dimensions (W×H×D mm)
Adds 132.5, 94, 145
Card types
Adds SD, SDHC, SDXC…
Codecs
Adds AVCHD, MP4
Burst (mechanical)
24 fps vs 10 fps — higher is better
Subject recognition
Adds Vehicle
RAW buffer depth
249 frames vs 200 frames — higher is better
Both cameras share
- ✓AA filter — Both support aa filter
- ✓ISO min (native) — Both 100
- ✓AF points / zones — Both 759
- ✓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 II
Pros
- ✓50MP stacked sensor
- ✓30fps blackout-free burst
- ✓8K 30p video
- ✓Best Sony AF
Cons
- –Very expensive
- –Complex menus
- –Large files
RX10 IV
Pros
- ✓24–600mm reach
- ✓24fps with AF
- ✓Weather sealed
- ✓Strong all-in-one travel camera
Cons
- –1-inch sensor
- –Large bridge body
- –Expensive for sensor size
Decided which one is right for you?
Compare live prices for the Alpha 1 II and RX10 IV at major authorized retailers.
Sony Alpha 1 II
Sony RX10 IV
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for video, Alpha 1 II or RX10 IV?
Alpha 1 II scores 9.5/10 versus 3.0/10 for RX10 IV — 8K recording for future-proof footage.
What's the resolution difference between the Alpha 1 II and RX10 IV?
Alpha 1 II is 50.1 MP and RX10 IV is 20.1 MP, so the Alpha 1 II captures more detail for cropping and large prints.
Do the Alpha 1 II and RX10 IV have in-body image stabilization?
Alpha 1 II has 8.5-stop in-body image stabilization, while RX10 IV has 6-stop in-body image stabilization.
Which shoots faster bursts — the Alpha 1 II or the RX10 IV?
Alpha 1 II reaches 30 fps electronic. RX10 IV reaches 24 fps mechanical.
What's the weight difference between the Alpha 1 II and RX10 IV?
Alpha 1 II weighs 743 g and RX10 IV weighs 1095 g, so the Alpha 1 II is 352 g lighter.
Do the Alpha 1 II and RX10 IV record 4K video?
Alpha 1 II: 8K (max), 4K up to 120p. RX10 IV: 4K up to 29.97p.
Are the Alpha 1 II and RX10 IV weather sealed?
Alpha 1 II: Yes. RX10 IV: Yes.
Which has better battery life?
Rated battery life is 520 shots (CIPA) for the Alpha 1 II and 370 shots for the RX10 IV, giving the Alpha 1 II the edge.
How much does each cost?
Alpha 1 II launched at $6,499 and RX10 IV at $1,699. The RX10 IV is $4,800 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way Alpha 1 II vs RX10 IV vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed July 2026.
Product images courtesy of Sony press materials.