Blackmagic
Pocket Cinema Camera 6K Pro
Handheld 6K Super 35 cinema camera with 6144 × 3456 HDR sensor, dual native ISO, active EF mount, built-in motorized ND filters, 1500-nit tilting screen, and USB-C direct recording.
$2,835
Launch priceReleased Feb 2021
Pentax
K-3 Mark III
APS-C DSLR flagship with optical viewfinder and weather sealing.
$1,999
Launch priceReleased Apr 2021
K-3 Mark III is 2 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
Pocket Cinema Camera 6K Pro
Wins
K-3 Mark III
3 categories tied
Which would you choose?
TL;DR — Key differences
- BK-3 Mark III has lower ISO min (native) (100 vs 400)
- APocket Cinema Camera 6K Pro has higher Burst (electronic) (50 fps vs 20 fps)
- BK-3 Mark III has lower Weight (520 g vs 1240 g)
- BK-3 Mark III has higher Resolution (25.7 MP vs 21.2 MP)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to share
Pocket Cinema Camera 6K Pro
180 × 123 × 112 mm
1240 g (2.73 lb / 43.74 oz)
Credit card
85.6 × 54 mm
for scale
K-3 Mark III
138 × 98 × 88 mm
520 g (1.15 lb / 18.34 oz)
Pocket Cinema Camera 6K Pro is 42mm wider, 25mm taller, and 24mm thicker than K-3 Mark III.
Pocket Cinema Camera 6K Pro is 720 g heavier than K-3 Mark III.
Depth (front-to-back): 112mm Pocket Cinema Camera 6K Pro · 88mm K-3 Mark III
Back view, to scale
Width × Height — same proportions as the front of the body.
Pocket Cinema Camera 6K Pro
180 × 123 mm
Credit card
85.6 × 54 mm
K-3 Mark III
138 × 98 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
Pocket Cinema Camera 6K Pro
180 × 112 mm
Credit card
85.6 × 54 mm
K-3 Mark III
138 × 88 mm
Sensor size, to scale
Pocket Cinema Camera 6K Pro
23.1 × 12.99 mm · APS-C
300 mm² area
K-3 Mark III
23.5 × 15.6 mm · APS-C
367 mm² area
1.2× larger sensor area = shallower depth of field and better low-light performance.
Lens ecosystem
Native lens selection
Pocket Cinema Camera 6K Pro: mount data unavailable
K-3 Mark III
✓ more lensesPentax K
70+
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
Pocket Cinema Camera 6K Pro
Codecs
Adds Blackmagic RAW 3:1, Blackmagic RAW 5:1, Blackmagic RAW 8:1…
Dimensions (W×H×D mm)
Adds 180, 123, 112
Card types
Adds CFast 2.0, USB-C external media
Burst (electronic)
50 fps vs 20 fps — higher is better
Internal RAW video
Only Pocket Cinema Camera 6K Pro supports it
Reasons to choose
K-3 Mark III
Subject recognition
Adds Human, Animal, Bird…
Codecs
Adds H.265, H.264
Dimensions (W×H×D mm)
Adds 138, 98, 88
ISO min (native)
100 vs 400 — lower is better
Weight
520 g vs 1240 g — lower is better
Eye AF
Only K-3 Mark III supports it
Animal / bird AF
Only K-3 Mark III supports it
Pre-Capture / Pre-Release
Only K-3 Mark III supports it
Both cameras share
- ✓ISO max (native) — Both 25,600
- ✓4K max frame rate — Both 60 fps
- ✓Card slots — Both 2
- ✓Touchscreen — Both support touchscreen
- ✓Bluetooth — Both support bluetooth
- ✓Microphone jack (3.5mm) — Both support microphone jack (3.5mm)
Pros & cons at a glance
Editorially curated highlights and trade-offs.
Pocket Cinema Camera 6K Pro
Pros
- ✓6K BRAW internal
- ✓Built-in ND
- ✓EF mount versatility
Cons
- –Poor stills AF
- –Large for pocket name
- –Battery hungry
K-3 Mark III
Pros
- ✓Optical viewfinder
- ✓Weather sealed
- ✓IBIS in DSLR
Cons
- –DSLR system declining
- –APS-C
- –Limited video
Decided which one is right for you?
Compare live prices for the Pocket Cinema Camera 6K Pro and K-3 Mark III at major authorized retailers.
Blackmagic Pocket Cinema Camera 6K Pro
Pentax K-3 Mark III
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 travel, Pocket Cinema Camera 6K Pro or K-3 Mark III?
K-3 Mark III scores 8.5/10 versus 0.5/10 for Pocket Cinema Camera 6K Pro — 520g — compact and travel-friendly.
What's the resolution difference between the Pocket Cinema Camera 6K Pro and K-3 Mark III?
Pocket Cinema Camera 6K Pro is 21.2 MP and K-3 Mark III is 25.7 MP, so the K-3 Mark III captures more detail for cropping and large prints.
Do the Pocket Cinema Camera 6K Pro and K-3 Mark III have in-body image stabilization?
Pocket Cinema Camera 6K Pro does not have IBIS, while K-3 Mark III has 7-stop in-body image stabilization.
Which shoots faster bursts — the Pocket Cinema Camera 6K Pro or the K-3 Mark III?
Pocket Cinema Camera 6K Pro reaches 50 fps electronic. K-3 Mark III reaches 20 fps electronic.
What's the weight difference between the Pocket Cinema Camera 6K Pro and K-3 Mark III?
Pocket Cinema Camera 6K Pro weighs 1240 g and K-3 Mark III weighs 520 g, so the K-3 Mark III is 720 g lighter.
Do the Pocket Cinema Camera 6K Pro and K-3 Mark III record 4K video?
Pocket Cinema Camera 6K Pro: 6K (6144 × 3456) (max), 4K up to 60p. K-3 Mark III: 4K up to 60p.
Are the Pocket Cinema Camera 6K Pro and K-3 Mark III weather sealed?
Pocket Cinema Camera 6K Pro: No. K-3 Mark III: Yes.
How much does each cost?
Pocket Cinema Camera 6K Pro launched at $2,835 and K-3 Mark III at $1,999. The K-3 Mark III is $836 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way Pocket Cinema Camera 6K Pro vs K-3 Mark III vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed July 2026.
Product images courtesy of Blackmagic and Pentax press materials.