Sony
Alpha 7 IV
33MP hybrid all-rounder with 10-bit 4K 60p and AI-powered subject tracking.
$2,499
Launch priceReleased Oct 2021
Sony
RX1R II
Full-frame 42MP compact with fixed 35mm f/2 Zeiss lens — still unmatched for discreet high-res street work.
$3,299
Launch priceReleased Oct 2015
Alpha 7 IV is 6 years newer.
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Wins
Alpha 7 IV
Wins
RX1R II
6 categories tied
Which would you choose?
TL;DR — Key differences
- AAlpha 7 IV has higher RAW buffer depth (828 frames vs 120 frames)
- AAlpha 7 IV has higher Max video bit rate (600 Mbps vs 150 Mbps)
- AAlpha 7 IV has higher ISO max (native) (51,200 vs 25,600)
- BRX1R II has higher Burst (electronic) (20 fps vs 10 fps)
- BRX1R II has lower Weight (507 g vs 658 g)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to share
Alpha 7 IV
131 × 96 × 80 mm
658 g (1.45 lb / 23.21 oz)
Credit card
85.6 × 54 mm
for scale
RX1R II
113 × 65 × 72 mm
507 g (1.12 lb / 17.88 oz)
Alpha 7 IV is 18mm wider, 31mm taller, and 8mm thicker than RX1R II.
Alpha 7 IV is 151 g heavier than RX1R II.
Depth (front-to-back): 80mm Alpha 7 IV · 72mm RX1R II
Back view, to scale
Width × Height — same proportions as the front of the body.
Alpha 7 IV
131 × 96 mm
Credit card
85.6 × 54 mm
RX1R II
113 × 65 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
Alpha 7 IV
131 × 80 mm
Credit card
85.6 × 54 mm
RX1R II
113 × 72 mm
Sensor size, to scale
Alpha 7 IV
35.9 × 23.9 mm · Full Frame
858 mm² area
RX1R II
35.9 × 24 mm · Full Frame
862 mm² area
Lens ecosystem
Native lens selection
Alpha 7 IV
✓ more lensesSony E
350+
native lenses available
RX1R II: 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 7 IV
Dimensions (W×H×D mm)
Adds 131.3, 96.4, 79.8
RAW buffer depth
828 frames vs 120 frames — higher is better
Max video bit rate
600 Mbps vs 150 Mbps — higher is better
Codecs
Adds XAVC HS, XAVC S, XAVC S-I
AA filter
Only Alpha 7 IV supports it
ISO max (native)
51,200 vs 25,600 — higher is better
Subject recognition
Adds Insect, Car/Train, Airplane
Internal RAW video
Only Alpha 7 IV supports it
Reasons to choose
RX1R II
Dimensions (W×H×D mm)
Adds 113.3, 65.4, 72
Burst (electronic)
20 fps vs 10 fps — higher is better
Pre-Capture / Pre-Release
Only RX1R II supports it
Subject recognition
Adds Vehicle
Weight
507 g vs 658 g — lower is better
Resolution
42.4 MP vs 33 MP — higher is better
IBIS effectiveness
7 stops vs 5.5 stops — higher is better
Battery life (CIPA)
640 shots vs 580 shots — higher is better
Both cameras share
- ✓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
- ✓4K max frame rate — Both 60 fps
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
RX1R II
Pros
- ✓42MP full-frame in pocket class
- ✓Zeiss 35mm f/2 lens
- ✓Pop-up EVF
- ✓No AA filter
Cons
- –Fixed lens
- –Slow AF by modern standards
- –Premium price when new
Decided which one is right for you?
Compare live prices for the Alpha 7 IV and RX1R II at major authorized retailers.
Sony Alpha 7 IV
Sony RX1R II
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for video, Alpha 7 IV or RX1R II?
Alpha 7 IV scores 7.5/10 versus 6.0/10 for RX1R II — 4K recording.
What's the resolution difference between the Alpha 7 IV and RX1R II?
Alpha 7 IV is 33 MP and RX1R II is 42.4 MP, so the RX1R II captures more detail for cropping and large prints.
Do the Alpha 7 IV and RX1R II have in-body image stabilization?
Alpha 7 IV has 5.5-stop in-body image stabilization, while RX1R II has 7-stop in-body image stabilization.
Which shoots faster bursts — the Alpha 7 IV or the RX1R II?
Alpha 7 IV reaches 10 fps electronic. RX1R II reaches 20 fps electronic.
What's the weight difference between the Alpha 7 IV and RX1R II?
Alpha 7 IV weighs 658 g and RX1R II weighs 507 g, so the RX1R II is 151 g lighter.
Do the Alpha 7 IV and RX1R II record 4K video?
Alpha 7 IV: 4K up to 60p. RX1R II: 4K up to 60p.
Are the Alpha 7 IV and RX1R II weather sealed?
Alpha 7 IV: Yes. RX1R II: No.
Which has better battery life?
Rated battery life is 580 shots (CIPA) for the Alpha 7 IV and 640 shots for the RX1R II, giving the RX1R II the edge.
How much does each cost?
Alpha 7 IV launched at $2,499 and RX1R II at $3,299. The Alpha 7 IV is $800 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way Alpha 7 IV vs RX1R II vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.
Product images courtesy of Sony press materials.