Blackmagic
PYXIS 6K
Modular full-frame 6K cinema box camera with 13-stop dynamic range, dual native ISO, L-Mount, dual CFexpress slots, and 12G-SDI output.
$3,389
Launch priceReleased Apr 2024
Sony
Alpha 7 IV
33MP hybrid all-rounder with 10-bit 4K 60p and AI-powered subject tracking.
$2,499
Launch priceReleased Oct 2021
PYXIS 6K is 2.5 years newer.
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Wins
PYXIS 6K
Wins
Alpha 7 IV
2 categories tied
Which would you choose?
TL;DR — Key differences
- APYXIS 6K has higher Burst (electronic) (60 fps vs 10 fps)
- BAlpha 7 IV has lower ISO min (native) (100 vs 400)
- BAlpha 7 IV has lower Weight (658 g vs 1500 g)
- BAlpha 7 IV has higher ISO max (native) (51,200 vs 25,600)
- BAlpha 7 IV has higher Resolution (33 MP vs 24.4 MP)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to sharePYXIS 6K
151 × 119 × 106 mm
1500 g (3.31 lb / 52.91 oz)
Credit card
85.6 × 54 mm
for scale
Alpha 7 IV
131 × 96 × 80 mm
658 g (1.45 lb / 23.21 oz)
PYXIS 6K is 20mm wider, 23mm taller, and 26mm thicker than Alpha 7 IV.
PYXIS 6K is 842 g heavier than Alpha 7 IV.
Depth (front-to-back): 106mm PYXIS 6K · 80mm Alpha 7 IV
Back view, to scale
Width × Height — same proportions as the front of the body.
PYXIS 6K
151 × 119 mm
Credit card
85.6 × 54 mm
Alpha 7 IV
131 × 96 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
PYXIS 6K
151 × 106 mm
Credit card
85.6 × 54 mm
Alpha 7 IV
131 × 80 mm
Sensor size, to scale
PYXIS 6K
36 × 24 mm · Full Frame
864 mm² area
Alpha 7 IV
35.9 × 23.9 mm · Full Frame
858 mm² area
Lens ecosystem
Native lens selection
PYXIS 6K: mount data unavailable
Alpha 7 IV
✓ 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
PYXIS 6K
Subject recognition
Adds Human face, Object tracking
Codecs
Adds Blackmagic RAW 3:1, Blackmagic RAW 5:1, Blackmagic RAW 8:1…
Dimensions (W×H×D mm)
Adds 151, 119, 106
Card types
Adds CFexpress Type B
Burst (electronic)
60 fps vs 10 fps — higher is better
Pre-Capture / Pre-Release
Only PYXIS 6K supports it
Reasons to choose
Alpha 7 IV
Subject recognition
Adds Human, Animal, Bird…
Codecs
Adds XAVC HS, XAVC S, XAVC S-I…
Dimensions (W×H×D mm)
Adds 131.3, 96.4, 79.8
Card types
Adds CFexpress Type A, SD UHS-II
ISO min (native)
100 vs 400 — lower is better
Weight
658 g vs 1500 g — lower is better
ISO max (native)
51,200 vs 25,600 — higher is better
Animal / bird AF
Only Alpha 7 IV supports it
Both cameras share
- ✓AA filter — Both support aa filter
- ✓Eye AF — Both support eye af
- ✓4K max frame rate — Both 60 fps
- ✓Internal RAW video — Both support internal raw video
- ✓Card slots — Both 2
- ✓Touchscreen — Both support touchscreen
Pros & cons at a glance
Editorially curated highlights and trade-offs.
PYXIS 6K
Pros
- ✓Full-frame 6048×4032 6K open gate
- ✓13 stops dynamic range
- ✓Dual native ISO 400 / 3200
- ✓Dual CFexpress Type B + 12G-SDI
- ✓1500-nit 4-inch touchscreen
Cons
- –Box body needs rigging
- –Heavy at 1.5 kg body-only
- –Requires external power for long shoots
- –AF limited to compatible L-Mount lenses
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
Decided which one is right for you?
Compare live prices for the PYXIS 6K and Alpha 7 IV at major authorized retailers.
Blackmagic PYXIS 6K
Sony Alpha 7 IV
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for travel, PYXIS 6K or Alpha 7 IV?
Alpha 7 IV scores 7.0/10 versus 1.5/10 for PYXIS 6K — 658g — manageable for travel.
What's the resolution difference between the PYXIS 6K and Alpha 7 IV?
PYXIS 6K is 24.4 MP and Alpha 7 IV is 33 MP, so the Alpha 7 IV captures more detail for cropping and large prints.
Do the PYXIS 6K and Alpha 7 IV have in-body image stabilization?
PYXIS 6K does not have IBIS, while Alpha 7 IV has 5.5-stop in-body image stabilization.
Which shoots faster bursts — the PYXIS 6K or the Alpha 7 IV?
PYXIS 6K reaches 60 fps electronic. Alpha 7 IV reaches 10 fps electronic.
What's the weight difference between the PYXIS 6K and Alpha 7 IV?
PYXIS 6K weighs 1500 g and Alpha 7 IV weighs 658 g, so the Alpha 7 IV is 842 g lighter.
Do the PYXIS 6K and Alpha 7 IV record 4K video?
PYXIS 6K: 6K Open Gate (6048 × 4032) (max), 4K up to 60p. Alpha 7 IV: 4K up to 60p.
Are the PYXIS 6K and Alpha 7 IV weather sealed?
PYXIS 6K: No. Alpha 7 IV: Yes.
How much does each cost?
PYXIS 6K launched at $3,389 and Alpha 7 IV at $2,499. The Alpha 7 IV is $890 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way PYXIS 6K vs Alpha 7 IV vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.
Product images courtesy of Blackmagic and Sony press materials.