Blackmagic
URSA Cine 17K
Large-format 65mm cinema camera with 17K resolution, interchangeable lens mount, and BRAW recording.
$29,995
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
URSA Cine 17K is 2.5 years newer.
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Wins
URSA Cine 17K
Wins
Alpha 7 IV
5 categories tied
Which would you choose?
TL;DR — Key differences
- BAlpha 7 IV has lower AF low-light limit (-4 EV vs 0 EV)
- BAlpha 7 IV has higher AF points / zones (759 vs 0)
- BAlpha 7 IV has higher AF frame coverage (94 % vs 0 %)
- BAlpha 7 IV has lower Weight (658 g vs 8500 g)
- BAlpha 7 IV has higher RAW buffer depth (828 frames vs 200 frames)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to shareURSA Cine 17K
280 × 190 × 200 mm
8500 g (18.74 lb / 299.83 oz)
Credit card
85.6 × 54 mm
for scale
Alpha 7 IV
131 × 96 × 80 mm
658 g (1.45 lb / 23.21 oz)
URSA Cine 17K is 149mm wider, 94mm taller, and 120mm thicker than Alpha 7 IV.
URSA Cine 17K is 7842 g heavier than Alpha 7 IV.
Depth (front-to-back): 200mm URSA Cine 17K · 80mm Alpha 7 IV
Back view, to scale
Width × Height — same proportions as the front of the body.
URSA Cine 17K
280 × 190 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.
URSA Cine 17K
280 × 200 mm
Credit card
85.6 × 54 mm
Alpha 7 IV
131 × 80 mm
Sensor size, to scale
URSA Cine 17K
55.96 × 29.87 mm · Full Frame
1672 mm² area
Alpha 7 IV
35.9 × 23.9 mm · Full Frame
858 mm² area
1.9× larger sensor area = shallower depth of field and better low-light performance.
Lens ecosystem
Native lens selection
URSA Cine 17K: 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
URSA Cine 17K
Codecs
Adds Blackmagic RAW
Dimensions (W×H×D mm)
Adds 280, 190, 200
Burst (electronic)
30 fps vs 10 fps — higher is better
Pre-Capture / Pre-Release
Only URSA Cine 17K supports it
4K max frame rate
120 fps vs 60 fps — higher is better
Card types
Adds CFexpress Type B
Resolution
65 MP vs 33 MP — higher is better
ISO min (native)
64 vs 100 — lower is better
Reasons to choose
Alpha 7 IV
AF low-light limit
-4 EV vs 0 EV — lower is better
AF points / zones
759 vs 0 — higher is better
AF frame coverage
94 % vs 0 % — higher is better
Codecs
Adds XAVC HS, XAVC S, XAVC S-I…
Dimensions (W×H×D mm)
Adds 131.3, 96.4, 79.8
Weight
658 g vs 8500 g — lower is better
RAW buffer depth
828 frames vs 200 frames — higher is better
Subject recognition
Adds Insect, Car/Train, Airplane
Both cameras share
- ✓AA filter — Both support aa filter
- ✓ISO max (native) — Both 51,200
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
- ✓Max video bit rate — Both 600 Mbps
- ✓Internal RAW video — Both support internal raw video
Pros & cons at a glance
Editorially curated highlights and trade-offs.
URSA Cine 17K
Pros
- ✓17K large format
- ✓Interchangeable mount
- ✓Blackmagic RAW
- ✓Pro cinema workflow
Cons
- –Extremely expensive
- –Massive files
- –Requires full crew
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 URSA Cine 17K and Alpha 7 IV at major authorized retailers.
Blackmagic URSA Cine 17K
Sony Alpha 7 IV
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for portraits, URSA Cine 17K or Alpha 7 IV?
Alpha 7 IV scores 9.0/10 versus 6.0/10 for URSA Cine 17K — 33MP — ample resolution for portraits.
What's the resolution difference between the URSA Cine 17K and Alpha 7 IV?
URSA Cine 17K is 65 MP and Alpha 7 IV is 33 MP, so the URSA Cine 17K captures more detail for cropping and large prints.
Do the URSA Cine 17K and Alpha 7 IV have in-body image stabilization?
URSA Cine 17K has 8-stop in-body image stabilization, while Alpha 7 IV has 5.5-stop in-body image stabilization.
Which shoots faster bursts — the URSA Cine 17K or the Alpha 7 IV?
URSA Cine 17K reaches 30 fps electronic. Alpha 7 IV reaches 10 fps electronic.
What's the weight difference between the URSA Cine 17K and Alpha 7 IV?
URSA Cine 17K weighs 8500 g and Alpha 7 IV weighs 658 g, so the Alpha 7 IV is 7842 g lighter.
Do the URSA Cine 17K and Alpha 7 IV record 4K video?
URSA Cine 17K: 4K up to 120p. Alpha 7 IV: 4K up to 60p.
Are the URSA Cine 17K and Alpha 7 IV weather sealed?
URSA Cine 17K: Yes. Alpha 7 IV: Yes.
Which has better battery life?
Rated battery life is 520 shots (CIPA) for the URSA Cine 17K and 580 shots for the Alpha 7 IV, giving the Alpha 7 IV the edge.
How much does each cost?
URSA Cine 17K launched at $29,995 and Alpha 7 IV at $2,499. The Alpha 7 IV is $27,496 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way URSA Cine 17K 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.