Blackmagic
URSA Mini Pro 12K
12K Super 35 cinema camera with interchangeable PL mount and BRAW recording.
$9,995
Released Jul 2020
Sony
Alpha 1 II
50MP stacked flagship with 30fps RAW, 8K video, and Sony's fastest hybrid performance.
$6,499
Released Nov 2024
Alpha 1 II is 4.3 years newer.
Wins
URSA Mini Pro 12K
Wins
Alpha 1 II
6 categories tied
TL;DR — Key differences
- BAlpha 1 II has lower AF low-light limit (-4 EV vs 0 EV)
- BAlpha 1 II has higher AF points / zones (759 vs 0)
- BAlpha 1 II has higher AF frame coverage (94 % vs 0 %)
- AURSA Mini Pro 12K has higher Max video bit rate (600 Mbps vs 150 Mbps)
- BAlpha 1 II has higher EVF refresh rate (240 Hz vs 120 Hz)
Key specs at a glance
Size and weight, to scale
URSA Mini Pro 12K
138 × 98 × 88 mm
520 g (1.15 lb / 18.34 oz)
Alpha 1 II
136 × 97 × 83 mm
743 g (1.64 lb / 26.21 oz)
URSA Mini Pro 12K is 2mm wider, 1mm taller, and 5mm thicker than Alpha 1 II.
URSA Mini Pro 12K is 223 g lighter than Alpha 1 II.
Depth (front-to-back): 88mm URSA Mini Pro 12K · 83mm Alpha 1 II
Sensor size, to scale
URSA Mini Pro 12K
23.5 × 15.6 mm · APS-C
367 mm² area
Alpha 1 II
35.9 × 24 mm · Full Frame
862 mm² area
2.3× larger sensor area = shallower depth of field and better low-light performance.
Lens ecosystem
Native lens selection
URSA Mini Pro 12K: mount data unavailable
Alpha 1 II
✓ 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 Mini Pro 12K
Dimensions (W×H×D mm)
Adds 138, 98, 88
Max video bit rate
600 Mbps vs 150 Mbps — higher is better
Card types
Adds CFexpress Type B
ISO max (native)
51,200 vs 32,000 — higher is better
Resolution
80 MP vs 50.1 MP — higher is better
Codecs
Adds ProRes
Weight
520 g vs 743 g — lower is better
Subject recognition
Adds Vehicle
Reasons to choose
Alpha 1 II
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
Dimensions (W×H×D mm)
Adds 136.1, 96.9, 82.9
Codecs
Adds XAVC HS, XAVC S, XAVC S-I
AA filter
Only Alpha 1 II supports it
Subject recognition
Adds Insect, Car/Train, Airplane
Card types
Adds CFexpress Type A
Both cameras share
- ✓ISO min (native) — Both 100
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
- ✓Burst (electronic) — Both 30 fps
- ✓Pre-Capture / Pre-Release — Both support pre-capture / pre-release
- ✓RAW buffer depth — Both 200 frames
Pros & cons at a glance
Editorially curated highlights and trade-offs.
URSA Mini Pro 12K
Pros
- ✓12K BRAW
- ✓Pro cinema workflow
- ✓Interchangeable mount
Cons
- –Very expensive
- –Huge files
- –Not handheld friendly
Alpha 1 II
Pros
- ✓50MP stacked sensor
- ✓30fps blackout-free burst
- ✓8K 30p video
- ✓Best Sony AF
Cons
- –Very expensive
- –Complex menus
- –Large files
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for landscape, URSA Mini Pro 12K or Alpha 1 II?
Alpha 1 II scores 9.0/10 versus 7.0/10 for URSA Mini Pro 12K — 50.1MP — massive detail for large prints.
What's the resolution difference between the URSA Mini Pro 12K and Alpha 1 II?
URSA Mini Pro 12K is 80 MP and Alpha 1 II is 50.1 MP, so the URSA Mini Pro 12K captures more detail for cropping and large prints.
Do the URSA Mini Pro 12K and Alpha 1 II have in-body image stabilization?
URSA Mini Pro 12K has 8-stop in-body image stabilization, while alpha 1 II has 8.5-stop in-body image stabilization.
Which shoots faster bursts — the URSA Mini Pro 12K or the Alpha 1 II?
URSA Mini Pro 12K reaches 30 fps electronic. Alpha 1 II reaches 30 fps electronic.
What's the weight difference between the URSA Mini Pro 12K and Alpha 1 II?
URSA Mini Pro 12K weighs 520 g and Alpha 1 II weighs 743 g, so the URSA Mini Pro 12K is 223 g lighter.
Do the URSA Mini Pro 12K and Alpha 1 II record 4K video?
URSA Mini Pro 12K: 8K / 6K (max), 4K up to 120p. Alpha 1 II: 8K (max), 4K up to 120p.
Are the URSA Mini Pro 12K and Alpha 1 II weather sealed?
URSA Mini Pro 12K: Yes. Alpha 1 II: Yes.
Which has better battery life?
Rated battery life is 520 shots (CIPA) for the URSA Mini Pro 12K and 520 shots for the Alpha 1 II, giving the Alpha 1 II the edge.
How much does each cost?
URSA Mini Pro 12K launched at $9,995 and Alpha 1 II at $6,499. The Alpha 1 II is $3,496 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Blackmagic and Sony press materials.