Pentax
K-3 Mark III
APS-C DSLR flagship with optical viewfinder and weather sealing.
$1,999
Launch priceReleased Apr 2021
Xtra
Edge Pro
Flagship action camera with 1/1.3-inch sensor, 4K/120fps in 4:3, Night View mode, 32× slow motion, 20m waterproof, and 230-min cold-resistant battery.
$299
Launch priceReleased Oct 2025
Edge Pro is 4.4 years newer.
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Wins
K-3 Mark III
Wins
Edge Pro
2 categories tied
Which would you choose?
TL;DR — Key differences
- BEdge Pro has lower Weight (147 g vs 520 g)
- BEdge Pro has higher ISO max (native) (51,200 vs 25,600)
- BEdge Pro has higher 4K max frame rate (120 fps vs 60 fps)
- AK-3 Mark III has higher Card slots (2 vs 1)
- BEdge Pro has higher Resolution (40 MP vs 25.7 MP)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to shareK-3 Mark III
138 × 98 × 88 mm
520 g (1.15 lb / 18.34 oz)
Credit card
85.6 × 54 mm
for scale
Edge Pro
71 × 44 × 33 mm
147 g (0.32 lb / 5.19 oz)
K-3 Mark III is 68mm wider, 54mm taller, and 55mm thicker than Edge Pro.
K-3 Mark III is 373 g heavier than Edge Pro.
Depth (front-to-back): 88mm K-3 Mark III · 33mm Edge Pro
Back view, to scale
Width × Height — same proportions as the front of the body.
K-3 Mark III
138 × 98 mm
Credit card
85.6 × 54 mm
Edge Pro
71 × 44 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
K-3 Mark III
138 × 88 mm
Credit card
85.6 × 54 mm
Edge Pro
71 × 33 mm
Sensor size, to scale
K-3 Mark III
23.5 × 15.6 mm · APS-C
367 mm² area
Lens ecosystem
Native lens selection
K-3 Mark III
✓ more lensesPentax K
70+
native lenses available
Edge Pro: mount data unavailable
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
K-3 Mark III
Dimensions (W×H×D mm)
Adds 138, 98, 88
Card types
Adds SD UHS-II
Subject recognition
Adds Animal, Bird, Vehicle
Eye AF
Only K-3 Mark III supports it
Animal / bird AF
Only K-3 Mark III supports it
In-body stabilization (IBIS)
Only K-3 Mark III supports it
Card slots
2 vs 1 — higher is better
Microphone jack (3.5mm)
Only K-3 Mark III supports it
Reasons to choose
Edge Pro
Stabilization modes
Adds MotionMaster, TiltGuard, 360 Lock
Dimensions (W×H×D mm)
Adds 70.5, 44.2, 32.8
Card types
Adds microSD
Weight
147 g vs 520 g — lower is better
ISO max (native)
51,200 vs 25,600 — higher is better
4K max frame rate
120 fps vs 60 fps — higher is better
Codecs
Adds AVC, HEVC
Resolution
40 MP vs 25.7 MP — higher is better
Both cameras share
- ✓ISO min (native) — Both 100
- ✓Pre-Capture / Pre-Release — Both support pre-capture / pre-release
- ✓IBIS effectiveness — Both 7 stops
- ✓Weather sealing — Both support weather sealing
- ✓Touchscreen — Both support touchscreen
- ✓Wi-Fi — Both support wi-fi
Pros & cons at a glance
Editorially curated highlights and trade-offs.
K-3 Mark III
Pros
- ✓Optical viewfinder
- ✓Weather sealed
- ✓IBIS in DSLR
Cons
- –DSLR system declining
- –APS-C
- –Limited video
Edge Pro
Pros
- ✓4K/120fps 4:3 + 13.5 stops DR
- ✓4K/60fps Night View AI mode
- ✓20m waterproof (no case)
- ✓230 min battery; –20 °C rated
Cons
- –Fixed lens
- –Night View limited to 8-bit
- –Larger/heavier than Edge
Decided which one is right for you?
Compare live prices for the K-3 Mark III and Edge Pro at major authorized retailers.
Pentax K-3 Mark III
Xtra Edge Pro
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for wildlife, K-3 Mark III or Edge Pro?
K-3 Mark III scores 10.0/10 versus 4.0/10 for Edge Pro — 20fps burst captures fleeting moments.
What's the resolution difference between the K-3 Mark III and Edge Pro?
K-3 Mark III is 25.7 MP and Edge Pro is 40 MP, so the Edge Pro captures more detail for cropping and large prints.
Do the K-3 Mark III and Edge Pro have in-body image stabilization?
K-3 Mark III has 7-stop in-body image stabilization, while Edge Pro does not have IBIS.
What's the weight difference between the K-3 Mark III and Edge Pro?
K-3 Mark III weighs 520 g and Edge Pro weighs 147 g, so the Edge Pro is 373 g lighter.
Do the K-3 Mark III and Edge Pro record 4K video?
K-3 Mark III: 4K up to 60p. Edge Pro: 4K up to 120p.
Are the K-3 Mark III and Edge Pro weather sealed?
K-3 Mark III: Yes. Edge Pro: Yes.
How much does each cost?
K-3 Mark III launched at $1,999 and Edge Pro at $299. The Edge Pro is $1,700 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way K-3 Mark III vs Edge Pro vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.
Product images courtesy of Pentax and Xtra press materials.