Pentax K-3 Mark III

Announced April 23, 2021

Compare Pentax K-3 Mark III
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PixelMeter The PixelMeter is our 1–100 aggregate of reviewer scores from trusted publications and creators. Weighted by source tier — not a raw average, and not PetaPixel’s own review.

Reviewer Consensus

Good

The Pentax K-3 Mark III is a robust, weather-sealed DSLR that offers loyal users an improved autofocus system, a high-magnification optical viewfinder, and effective in-body image stabilization. That said, its high price tag and fixed rear screen make it a challenging sell compared to modern mirrorless alternatives.

Weighted from 13 reviewer scores

Pros

  • Durable, weather-resistant magnesium alloy body
  • Improved autofocus system with wide sensor coverage
  • Effective five-axis in-body image stabilization
  • Fast 12fps continuous shooting capability
  • Large, high-magnification optical viewfinder

Cons

  • Fixed rear LCD screen lacks tilt or articulation
  • Limited and cropped 4K video functionality
  • High price point relative to mirrorless competition
  • Small buffer capacity for continuous shooting
  • Absence of an external battery charger
  • Launch price $1,999.95 (USD)
  • Sensor 25.73MP APS-C CMOS
  • Video 4K 29.97p
  • Stabilization In-body IS
  • Burst 12 fps electronic 12 fps mechanical

What the Reviewers Say

All 13 expert reviews, weighted into the PixelMeter score.

  • PetaPixel 7/10

    If you already own Pentax cameras and lenses, then the update to the K-3 Mark III is worth it despite the premium price for an APS-C DSLR.

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  • For those looking for a DSLR, then the Pentax K-3 III is one of the best APS-C DSLRs available, with a 25.7mp APS-C BSI CMOS sensor and Shake Reduction (SR) system, giving great image quality, with low levels of noise, and excellent colour reproduction.

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  • PCMag

    The Pentax K-3 Mark III includes the company's best-yet autofocus system and a sturdy, all-weather build. It's a worthwhile upgrade for devoted Pentax users, but others should look elsewhere.

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  • Tom's Guide

    Pentax fans and DSLR enthusiasts will find lots to love about the K-3 III, but its combination of high price and some outdated features prevent it challenging the best mirrorless cameras.

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  • Australian Photography

    Faster, more advanced and tougher than ever before, this is Pentax’s speediest camera to date and the K-3 Mark III offers a genuine alternative to wildlife photographers who want to stay with DSLRs rather than move over to the mirrorless movement.

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  • Neocamera

    With its thoughtful controls, the Pentax K-3 III is among the most efficient digital cameras on the market and it manages this while staying quite compact for a DSLR.

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  • Pentax User

    For those looking for a DSLR, then the Pentax K-3 III is one of the best APS-C DSLRs available, with a 25.7mp APS-C BSI CMOS sensor and Shake Reduction (SR) system, giving great image quality, with low levels of noise, and excellent colour reproduction.

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  • Bobby Tonelli

    As much as I want to really love the Pentax K-3 Mark III for the build quality, the colors, the features, and a lot of things about this camera that I like, when it comes down to the performance, it's not quite there yet in my personal opinion.

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Specifications

General

Announcement date April 23, 2021
Launch MSRP $1,999.95
Medium Digital
Lens mount Pentax K
Body type DSLR

Sensor & Processing

Effective resolution 25.73MP
Sensor format APS-C
Sensor technology CMOS
Sensor dimensions 23.3 x 15.5 mm
Color filter array Bayer
Native ISO range Native: 100 to 1,600,000
Aspect ratio options 3:2

Still Capture

Burst speed (mechanical) 12fps
Burst speed (electronic) 12fps
Other still formats DNG, JPEG, RAW
Still bit depth 14-bit

Autofocus

AF architecture Phase detect
AF points Phase Detection: 101 (25 Cross-Type)
Autofocus modes Continuous-Servo AF, Manual Focus, Single-Servo AF
AF low-light sensitivity -4EV

Shutter & Exposure

Shutter types Mechanical Focal Plane Shutter and Electronic Rolling Shutter
Shutter speed range 1/8000 to 30 sec, Bulb, Time
Flash sync speed 1/200 sec
Maximum electronic shutter speed 1/8000s
Exposure compensation -5 to +5 EV
Metering modes Center-Weighted Average, Highlight Weighted, Multi-Zone, Spot

Display & Viewfinder

EVF magnification 1.05x
Rear LCD size 3.2-inch
Rear LCD resolution 1.62M dots
Rear LCD articulation Fixed

Video

Internal Recording

H.264/MOV

  • 3840 x 2160 at 23.98/29.97 fps
  • 1920 x 1080p at 23.98/29.97/59.94 fps
External Recording
  • No
Max video resolution 4K
Max frame rate at max resolution 29.97p
Max frame rate at UHD 29.97p
Codecs H.264/MOV
Recording limit 25 min
Audio recording Stereo

Storage

Card slots 2
Card types 1x Slot 1: SD UHS-II; Slot 2: SD UHS-I

Stabilization

In-body stabilization (IBIS) Yes

Connectivity

USB 1x USB-C Input/Output
HDMI output Micro Type-D
Wi-Fi 802.11n
Bluetooth Bluetooth 4.2
3.5mm mic input Yes
3.5mm headphone output Yes
Hot shoe 1x Hot Shoe

Power

Battery D-LI90
CIPA battery life (LCD) 800 shots

Body

Weight (body only) 735g (1 lb 9.9 oz)
Dimensions 134.5 x 103.5 x 73.5 mm (5.30 x 4.07 x 2.89 in)
Weight (with battery and recording media) 820g (1 lb 12.9 oz)
Weather sealing Full weather sealing
Chassis material Magnesium alloy
Tripod thread 1/4"-20