Pentax
K-3 Mark III Monochrome
Monochrome-only APS-C DSLR with 25.7MP sensor, IBIS, optical viewfinder, and weather sealing.
$2,199
Launch priceAffiliate 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.
Last updated June 2026
Key specs at a glance
Resolution
25.7 MP
Sensor
APS-C
ISO max
25,600
Burst
20 fps
4K
60 fps
IBIS
5.5-stop
Weight
820 g
Battery
640 shots
Where to buy the Pentax K-3 Mark III Monochrome
Check today's availability, latest prices, bundle deals, and certified refurbished options at the major authorized retailers:
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.
Sensor size
Pentax K-3 Mark III Monochrome
23.5 × 15.6 mm · APS-C
367 mm² area
Lens ecosystem
Pentax K mount
30
First-party
40
Third-party
70+
Total available
Mount introduced 1975
Body size, to scale
Front view
Width × Height
Credit card
85.6 × 54 mm
Back view
Width × Height — same proportions as the front
Credit card
85.6 × 54 mm
Top view
Width × Depth (front-to-back)
Credit card
85.6 × 54 mm
135 × 104 × 74 mm · 820 g (1.81 lb / 28.92 oz)
Best for
Use-case scores
Scored algorithmically from verified specs. 10 = best in class.
Portrait
Good- · 25.7MP — solid resolution
- · Eye AF locks focus on subjects reliably
Sports & Action
Good- · 20fps burst — fast action ready
- · Pre-Capture records before you press shutter
Video & Hybrid
Good- · 4K recording
- · 4K 60p smooth motion
Landscape
Fair- · Weather sealed for outdoor conditions
- · IBIS enables slower handheld shutter speeds
Travel
Good- · 640 shots/charge — all-day shooting
- · Weather sealed for varied conditions
Wildlife
Excellent- · 20fps burst captures fleeting moments
- · Bird AF subject recognition
Vlogging
Fair- · 4K 60p for smooth handheld vlogs
- · IBIS reduces handheld shake
Pros
- ✓ Dedicated monochrome sensor
- ✓ Optical viewfinder
- ✓ IBIS in a DSLR
- ✓ Weather sealed
Cons
- – Black-and-white only
- – DSLR platform
- – Limited video
Ready to buy the Pentax K-3 Mark III Monochrome?
Compare live prices, bundles, and availability at trusted retailers.
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.
Explore related cameras
Continue from Pentax K-3 Mark III Monochrome into comparisons and alternatives.
Popular comparisons
Existing matchups that include this camera.
Similar cameras
Comparable bodies by sensor class or camera category.
- Fujifilm X-H2S$2,499Compare
- Fujifilm X100VI$1,599Compare
- Canon EOS R7$1,499Compare
- Ricoh GR IV$1,499Compare
More from Pentax
Same-brand alternatives in the database.
- Pentax K-1$1,799Compare
- Pentax 645Z$8,499Compare
- Pentax K-3 Mark III$1,999Compare
- Pentax K-1 Mark II$1,999Compare
Full specifications
Verified specs · Pentax K-3 Mark III Monochrome