Insta360
X6
Flagship 8K 360 camera with dual Sony 1/1.1-inch square sensors, native 8K50 and in-camera Dolby Vision, 120MP stills, 2.32-inch OLED, 140-minute 8K30 runtime, and 20m waterproofing.
$700
Launch priceReleased Aug 2026
Pentax
645Z
51MP medium format DSLR that made digital MF accessible — still prized for landscape and studio.
$8,499
Launch priceReleased Apr 2014
X6 is 12.3 years newer.
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Wins
X6
Wins
645Z
Which would you choose?
TL;DR — Key differences
- B645Z has higher AF points / zones (101 vs 0)
- AX6 has lower Weight (196 g vs 1470 g)
- B645Z has higher ISO max (native) (25,600 vs 6,400)
- AX6 has higher Resolution (120 MP vs 51.4 MP)
- AX6 has higher 4K max frame rate (120 fps vs 60 fps)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to share
X6
50 × 100 × 40 mm
196 g (0.43 lb / 6.91 oz)
Credit card
85.6 × 54 mm
for scale
645Z
156 × 117 × 123 mm
1470 g (3.24 lb / 51.85 oz)
X6 is 106mm narrower, 17mm shorter, and 83mm thinner than 645Z.
X6 is 1274 g lighter than 645Z.
Depth (front-to-back): 40mm X6 · 123mm 645Z
Back view, to scale
Width × Height — same proportions as the front of the body.
X6
50 × 100 mm
Credit card
85.6 × 54 mm
645Z
156 × 117 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
X6
50 × 40 mm
Credit card
85.6 × 54 mm
645Z
156 × 123 mm
Sensor size, to scale
645Z
43.8 × 32.8 mm · Medium Format
1437 mm² area
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
X6
Stabilization modes
Adds FlowState, 360° Horizon Lock, InstaFrame 2.0…
Dimensions (W×H×D mm)
Adds 50, 100, 40
Card types
Adds microSD
Weight
196 g vs 1470 g — lower is better
Subject recognition
Adds Pet, Object
Resolution
120 MP vs 51.4 MP — higher is better
4K max frame rate
120 fps vs 60 fps — higher is better
RAW buffer depth
200 frames vs 120 frames — higher is better
Reasons to choose
645Z
AF points / zones
101 vs 0 — higher is better
Dimensions (W×H×D mm)
Adds 156, 117, 123
Card types
Adds SD UHS-II
ISO max (native)
25,600 vs 6,400 — higher is better
Subject recognition
Adds Animal, Bird, Vehicle
AA filter
Only 645Z supports it
Eye AF
Only 645Z supports it
Animal / bird AF
Only 645Z supports it
Both cameras share
- ✓Pre-Capture / Pre-Release — Both support pre-capture / pre-release
- ✓Weather sealing — Both support weather sealing
- ✓Touchscreen — Both support touchscreen
- ✓Wi-Fi — Both support wi-fi
- ✓Bluetooth — Both support bluetooth
Pros & cons at a glance
Editorially curated highlights and trade-offs.
X6
Pros
- ✓Dual Sony 1/1.1-inch sensors (1-inch equivalent 360)
- ✓Native 8K50 + in-camera Dolby Vision / 10-bit I-Log
- ✓120MP 360 photos; 5K60 / 4K120 single-lens
- ✓2600mAh Xtreme Battery: 140 min 8K30
- ✓20m waterproof + replaceable Lens 2.0
Cons
- –$700 Standard Bundle vs cheaper 360 rivals
- –8K50, not 8K60 vs Osmo 360 II
- –47GB usable built-in storage vs DJI 105GB
- –360 footage still needs reframing
645Z
Pros
- ✓51MP medium format
- ✓CMOS sensor
- ✓Pentax color
- ✓Relatively affordable MF
Cons
- –Huge body
- –Slow operation
- –Limited lens line vs Hasselblad
Decided which one is right for you?
Compare live prices for the X6 and 645Z at major authorized retailers.
Insta360 X6
Pentax 645Z
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for sports, X6 or 645Z?
X6 scores 10.0/10 versus 6.5/10 for 645Z — 30fps burst — pro-level action capture.
What's the resolution difference between the X6 and 645Z?
X6 is 120 MP and 645Z is 51.4 MP, so the X6 captures more detail for cropping and large prints.
Do the X6 and 645Z have in-body image stabilization?
X6 uses FlowState 6-axis + 360° Horizon Lock (electronic), while 645Z has 7-stop in-body image stabilization.
Which shoots faster bursts — the X6 or the 645Z?
X6 reaches 30 fps electronic. 645Z reaches 20 fps electronic.
What's the weight difference between the X6 and 645Z?
X6 weighs 196 g and 645Z weighs 1470 g, so the X6 is 1274 g lighter.
Do the X6 and 645Z record 4K video?
X6: 8K 360 (max), 4K up to 120p. 645Z: 4K up to 60p.
Are the X6 and 645Z weather sealed?
X6: Yes. 645Z: Yes.
Which has better battery life?
Rated battery life is 520 shots (CIPA) for the X6 and 640 shots for the 645Z, giving the 645Z the edge.
How much does each cost?
X6 launched at $700 and 645Z at $8,499. The X6 is $7,799 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way X6 vs 645Z vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed September 2026.
Product images courtesy of Insta360 and Pentax press materials.