Blackmagic
URSA Mini Pro 12K
12K Super 35 cinema camera with interchangeable PL mount and BRAW recording.
$9,995
Launch priceReleased Jul 2020
Sony
FX3
Compact full-frame cinema line camera with S-Cinetone and pro video ergonomics.
$3,899
Launch priceReleased Feb 2021
FX3 is 7 months newer.
Affiliate disclosure: As an Amazon Associate, Cameraegg earns from qualifying purchases. Cameraegg may also earn commission from B&H links, at no extra cost to you.
Wins
URSA Mini Pro 12K
Wins
FX3
3 categories tied
Which would you choose?
TL;DR — Key differences
- BFX3 has lower AF low-light limit (-6 EV vs 0 EV)
- BFX3 has higher AF points / zones (627 vs 0)
- BFX3 has higher AF frame coverage (94 % vs 0 %)
- AURSA Mini Pro 12K has higher Resolution (80 MP vs 12.1 MP)
- AURSA Mini Pro 12K has higher Burst (electronic) (30 fps vs 10 fps)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to shareURSA Mini Pro 12K
138 × 98 × 88 mm
520 g (1.15 lb / 18.34 oz)
Credit card
85.6 × 54 mm
for scale
FX3
130 × 78 × 85 mm
715 g (1.58 lb / 25.22 oz)
URSA Mini Pro 12K is 8mm wider, 20mm taller, and 4mm thicker than FX3.
URSA Mini Pro 12K is 195 g lighter than FX3.
Depth (front-to-back): 88mm URSA Mini Pro 12K · 85mm FX3
Back view, to scale
Width × Height — same proportions as the front of the body.
URSA Mini Pro 12K
138 × 98 mm
Credit card
85.6 × 54 mm
FX3
130 × 78 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
URSA Mini Pro 12K
138 × 88 mm
Credit card
85.6 × 54 mm
FX3
130 × 85 mm
Sensor size, to scale
URSA Mini Pro 12K
23.5 × 15.6 mm · APS-C
367 mm² area
FX3
35.6 × 23.8 mm · Full Frame
847 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
FX3
✓ 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
Resolution
80 MP vs 12.1 MP — higher is better
Burst (electronic)
30 fps vs 10 fps — higher is better
Subject recognition
Adds Bird, Vehicle
Pre-Capture / Pre-Release
Only URSA Mini Pro 12K supports it
Card types
Adds CFexpress Type B
RAW buffer depth
200 frames vs 120 frames — higher is better
Codecs
Adds ProRes
Reasons to choose
FX3
AF low-light limit
-6 EV vs 0 EV — lower is better
AF points / zones
627 vs 0 — higher is better
AF frame coverage
94 % vs 0 % — higher is better
Dimensions (W×H×D mm)
Adds 129.7, 77.8, 84.5
Codecs
Adds XAVC HS, XAVC S, XAVC S-I
AA filter
Only FX3 supports it
ISO max (native)
102,400 vs 51,200 — higher is better
Card types
Adds CFexpress Type A
Both cameras share
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
- ✓4K max frame rate — Both 120 fps
- ✓Max video bit rate — Both 600 Mbps
- ✓Internal RAW video — Both support internal raw video
- ✓In-body stabilization (IBIS) — Both support in-body stabilization (ibis)
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
FX3
Pros
- ✓Cinema form factor
- ✓S-Log3 / S-Cinetone
- ✓Compact for gimbals
- ✓Full-frame sensor
Cons
- –No EVF
- –Still photo ergonomics limited
- –Single card slot
Decided which one is right for you?
Compare live prices for the URSA Mini Pro 12K and FX3 at major authorized retailers.
Blackmagic URSA Mini Pro 12K
Affiliate disclosure: As an Amazon Associate, Cameraegg earns from qualifying purchases. Cameraegg may also earn commission from B&H links, at no extra cost to you.
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for wildlife, URSA Mini Pro 12K or FX3?
URSA Mini Pro 12K scores 10.0/10 versus 5.5/10 for FX3 — 30fps burst captures fleeting moments.
What's the resolution difference between the URSA Mini Pro 12K and FX3?
URSA Mini Pro 12K is 80 MP and FX3 is 12.1 MP, so the URSA Mini Pro 12K captures more detail for cropping and large prints.
Do the URSA Mini Pro 12K and FX3 have in-body image stabilization?
URSA Mini Pro 12K has 8-stop in-body image stabilization, while FX3 has 5.5-stop in-body image stabilization.
Which shoots faster bursts — the URSA Mini Pro 12K or the FX3?
URSA Mini Pro 12K reaches 30 fps electronic. FX3 reaches 10 fps electronic.
What's the weight difference between the URSA Mini Pro 12K and FX3?
URSA Mini Pro 12K weighs 520 g and FX3 weighs 715 g, so the URSA Mini Pro 12K is 195 g lighter.
Do the URSA Mini Pro 12K and FX3 record 4K video?
URSA Mini Pro 12K: 8K / 6K (max), 4K up to 120p. FX3: 4K up to 120p.
Are the URSA Mini Pro 12K and FX3 weather sealed?
URSA Mini Pro 12K: Yes. FX3: Yes.
Which has better battery life?
Rated battery life is 520 shots (CIPA) for the URSA Mini Pro 12K and 580 shots for the FX3, giving the FX3 the edge.
How much does each cost?
URSA Mini Pro 12K launched at $9,995 and FX3 at $3,899. The FX3 is $6,096 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way URSA Mini Pro 12K vs FX3 vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed July 2026.
Product images courtesy of Blackmagic and Sony press materials.