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Pentax K-3 Mark III DSLR Camera (Black)

BH #PEK33B • MFR #01051
Pentax K-3 Mark III DSLR Camera (Black)
Key Features
  • 25.7MP APS-C BSI CMOS Sensor
  • SAFOX 13 101-Point Phase-Detection AF
  • 1.05x-Mag. Pentaprism Optical Viewfinder
  • 3.2" 1.62m-Dot Touchscreen LCD
Proving the DSLR is still a highly capable tool, the Pentax K-3 Mark III marries contemporary imaging capabilities with the trusty and familiar design of an SLR. Taking the flagship spot in Pentax's APS-C lineup, the K-3 Mark III is characterized by a new 25.7MP BSI CMOS sensor, a high-density 101-point AF system, a revised pentaprism optical viewfinder, and an advanced SR II Shake Reduction System. As a Pentax, too, the K-3 Mark III is also distinguished by its robust physical construction and extensive weather sealing for working in harsh weather conditions and climates.
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Pentax K-3 III Overview

  • 1Description
  • 225.7MP APS-C BSI CMOS Sensor
  • 3SR II In-Body Shake Reduction
  • 4SAFOX 13 Phase-Detection AF
  • 5Body Design
  • 6Real-Time Scene Analysis System

Proving the DSLR is still a highly capable tool, the Pentax K-3 Mark III marries contemporary imaging capabilities with the trusty and familiar design of an SLR. Taking the flagship spot in Pentax's APS-C lineup, the K-3 Mark III is characterized by a new 25.7MP BSI CMOS sensor, a high-density 101-point AF system, a revised pentaprism optical viewfinder, and an advanced SR II Shake Reduction System. As a Pentax, too, the K-3 Mark III is also distinguished by its robust physical construction and extensive weather sealing for working in harsh weather conditions and climates.

The K-3 Mark III's updated sensor and processing capabilities offer a blend of high-resolution stills performance with apt speed to suit a variety of shooting scenarios. Up to 12 fps continuous shooting is possible along with UHD 4K video recording. For stills, a new SAFOX 13 AF system features 101 phase-detection points for quick and accurate focusing performance with apt subject tracking capabilities.

Complementing the imaging, this camera relies on Pentax's attention to details and how cameras are handled and used, and as such features a tough and robust physical construction with an ergonomic design and intuitive controls. The improved optical viewfinder provides realistic and detailed eye-level viewing while the rear 3.2" 1.62m-dot touchscreen LCD offers easy control over settings and image review. The K-3 Mark III is also benefitted by dual SD memory card slots, both Wi-Fi and Bluetooth wireless interfaces, and a revised button design for more direct access to exposure and AF point control.

25.7MP APS-C BSI CMOS Sensor

Featuring a revised APS-C-format 25.7MP CMOS sensor, the K-3 Mark III's sensor sports a BSI design that promotes low noise, smooth tones, and accurate color rendering throughout the sensitivity range, from ISO 100-1600000, to suit working in a variety of lighting conditions. The sensor is paired with an updated PRIME V image processor, too, which achieves quick performance and processing to benefit both stills and video recording. Full-resolution continuous shooting up to 12 fps is also possible, along with UHD 4K video recording at 30p.

SR II In-Body Shake Reduction

Distinct among DSLRs, an advanced 5-axis SR II Shake Reduction system provides 5.5 stop-effective image stabilization performance with select lenses. This in-body IS system helps to greatly reduce the appearance of camera shake when shooting handheld with slower shutter speeds, making it easier to work in more difficult lighting conditions.

Beyond controlling camera shake, the SR II mechanism also benefits stills applications by enabling a Pixel Shift Resolution feature and an AA Filter Simulator function. Pixel Shift Resolution shifts the sensor in small increments in sequential shots in order to capture full color information at each pixel site, then composites these sequential frames to produce a single image with richer detail and resolution. The AA Filter Simulator, on the other hand, utilizes microscopic vibrations during the capture process to help mitigate moiré in order to produce clean renderings of fabrics and other high-frequency materials. This system works in conjunction with the sensor that lacks an AA filter, so you have the choice between gaining the most resolution or reducing moiré under specific scenarios.

SAFOX 13 Phase-Detection AF

Updated with more points and improved coverage, the SAFOX 13 autofocus sensor is a phase-detection focusing system that uses 101 individual points, including 25 cross-type sensors in the middle of the image frame. This array benefits focusing speed and accuracy in a variety of lighting conditions, down to -4 EV. Additionally, a new 307000-pixel RGBIr sensor and new tracking algorithm also promote more accurate tracking of subjects, even when moving at varying speeds or in irregular directions.

Body Design

  • Large and bright optical pentaprism viewfinder provides an impressive 1.05x magnification and covers 100% of the image frame for clear and accurate eye-level viewing. The pentaprism's design has also been updated to use high-refraction glass, optimized coatings, and a distortion-correcting element to reduce aberrations and promote high clarity and color fidelity.
  • Rear 3.2" 1.62m-dot touchscreen LCD is a large and bright means for image review, menu navigation, and live view shooting. This screen is also benefitted by a Night Vision function that adjusts the screen's brightness depending on the shooting conditions.
  • Typical of Pentax's designs, a sturdy and weather-resistant construction is featured for use in trying weather conditions. The chassis is built from lightweight-yet-durable magnesium alloy and is fitted with a series of dust- and moisture-resistant seals to protect against various weather conditions. The camera is also freezeproof down to 14°F and the durability is carried over to the shutter unit as well, which is rated for 300,000 shutter actuations.
  • Both 3.5mm microphone and headphone ports are featured to benefit audio performance while recording video.
  • Updated control scheme includes a new AF point selector lever for intuitive point selection; a Hyper Operation system with a new Advanced mode for more intuitive exposure mode control; an Operation Control Lock function to prevent accidental settings changes; and a new Smart Function mode and dedicated button for quick selection of settings and functions.
  • Included D-LI90 rechargeable lithium-ion battery provides approximately 800 shots per charge and the camera's USB Type-C port can be used for in-body battery charging.
  • Dual SD memory card slots offer flexible storage capabilities and the first card slot is compatible with the UHS-II standard for faster transfer speeds.
  • Built-in Wi-Fi and Bluetooth connectivity can be used to wirelessly share imagery or remotely control the camera via the Image Sync mobile app.

Real-Time Scene Analysis System

Using the high-density RGBIr sensor and the PRIME V image processor, the K-3 Mark III can use the Real-time Scene Analysis System to optimize exposure and AF accuracy by detecting subjects' faces and eyes with image recognition technology. This system relies on Deep Learning, an AI-based technology, for more accurate subject detection and scene judgement.
UPC: 027075302310

Pentax K-3 III Specs

Lens MountPentax K
Sensor ResolutionActual: 26.78 Megapixel
Effective: 25.73 Megapixel (6192 x 4128)
Sensor Type23.3 x 15.5 mm (APS-C) CMOS
Crop Factor1.5x
Image StabilizationSensor-Shift, 5-Axis
Mirror Lock-UpYes
Exposure Control
Shutter SpeedMechanical Shutter
1/8000 to 30 Seconds
0 to 20 Minutes in Bulb Mode
Metering MethodCenter-Weighted Average, Highlight Weighted, Multi-Zone, Spot
Exposure ModesAperture Priority, Auto, Manual, Program, Sensitivity Priority, Shutter Priority
Exposure Compensation-5 to +5 EV (1/3, 1/2 EV Steps)
Metering Range-3 to 20 EV
Continuous ShootingMechanical Shutter
Up to 12 fps at 25.7 MP for up to 37 Frames (JPEG) / 32 Frames (Raw)
Mechanical Shutter
Up to 7 fps at 25.7 MP for up to 60 Frames (JPEG) / 37 Frames (Raw)
Mechanical Shutter
Up to 2.5 fps at 25.7 MP for up to 90 Frames (JPEG) / 39 Frames (Raw)
Interval RecordingYes
Self-Timer2/12-Second Delay
Aspect Ratio3:2
Image File FormatDNG, JPEG, Raw
Bit Depth14-Bit
Recording ModesH.264/MOV
UHD 4K (3840 x 2160) at 23.98p/29.97p
Full HD (1920 x 1080) at 23.98p/29.97p/59.94p
Recording LimitUp to 25 Minutes
Video SystemNTSC
Media/Memory Card SlotSlot 1: SD/SDHC/SDXC (UHS-II)
Resolution1,620,000 Dot
Display TypeFixed Touchscreen LCD
TypeOptical (Pentaprism)
Eye Point20.5 mm
MagnificationApprox. 1.05x
Diopter Adjustment-4 to +1
Focus TypeAuto and Manual Focus
Focus ModeContinuous-Servo AF (C), Manual Focus (M), Single-Servo AF (S)
Autofocus PointsPhase Detection: 101 (25 Cross-Type)
Autofocus Sensitivity-4 to +18 EV
Built-In FlashNo
Flash ModesAuto, Auto/Red-Eye Reduction, Flash On, Flash On w/ Red-Eye Reduction, Hi-Speed Sync, Slow Sync, Slow Sync/Red-Eye Reduction, TTL Auto, Wireless
Maximum Sync Speed1/200 Second
Flash Compensation-2 to +1 EV (1/3, 1/2 EV Steps)
Dedicated Flash SystemP-TTL
External Flash ConnectionHot Shoe, PC Terminal
Operating Temperature14 to 104°F / -10 to 40°C
Operating Humidity0 to 85%
Battery Type1 x D-LI90 Rechargeable Lithium-Ion, 7.2 VDC, 1860 mAh (Approx. 800 Shots)
Dimensions (W x H x D)5.3 x 4.1 x 2.9" / 134.5 x 103.5 x 73.5 mm
Weight1.8 lb / 820 g (Body with Battery and Memory)
1.6 lb / 735 g (Body Only)
Packaging Info
Package Weight3.035 lb
Box Dimensions (LxWxH)8.3 x 6.5 x 5.1"

Pentax K-3 III Reviews

my latest camera

By Murray,
Rated 4 out of 5
Date: 2021-12-15

This being my 4th Pentax camera, I pretty much know what to expect. I am still learning some of the little changes from past units ( K5, K3, K1II ) but it is very easy to operate. One thing I noted was that sometimes the exposure was a bit off but that seems to no longer be an issue with the latest software update. I hear that using a PLM lens is also advantageous but I don't have any of those yet. I have used this for a few months now. Did not wish to make a rating right away so as to be more appropriate in my thoughts for others considering this camera.

Lovin' it!

By Wesley
Rated 5 out of 5
Date: 2021-08-11

I've used the K-3iii for tons of indoor & outdoor sports action (including in pouring rain), a few outdoor portraits, night sky photography, landscapes and interiors. It's a massive improvement over previous models. I considered switching to Sony or Canon mirrorless, but couldn't justify the massive cost of a comparable camera & replacement lenses. The K-3iii and my current lenses do everything I need for a fraction of the cost. Despite criticism, I think the price is reasonable for a camera of this caliber. PROS: *Improved AF speed. And 12 fps gives me goosebumps. They are why I get more usable action shots. *1.05x viewfinder magnification. No mirrorless camera gives the same feeling of immersion as a big DSLR viewfinder. *In-camera battery charging: I never have to take batteries out (a pain when the battery grip is attached). *Noise control at high ISOs is much improved. I shoot at ISO 6400 and 10,000 a lot, and I feel comfortable cropping then selling images taken at these speeds. *The display is a multi-touch screen! *Weather sealing: Pentax are pioneers in this. Rain & pool splashing couldn't stop this bad boy! *Using legacy lenses: Nobody is better at this than Pentax, and it just got easier: all apertures now available on manual lenses. I recently used my 50mm f/1.2 from 1976. Still a fine piece of glass! *Firmware v.1.10 includes electronic shutter capability for silent shooting & speeds up to 1/160,000 sec. CONS: *No articulating LCD screen. Makes it hard to shoot at high or low angles. *No built-in GPS, so no Astrotracer without the $200 external GPS. Connect to your phone via WiFi for geotagging. *Bluetooth and WiFi connections to Image Sync app are finicky. I feel lucky when it actually works. *Smart function dial: a protruding, redundant way to access features that I often mistake for the rear control dial. I customized it to do nothing. *Continuous AF for video is only possible with the two newest lenses that have PLM motors. Also, frame rates top out at 60 fps. But most Pentaxians don't use their cameras for video. BOTTOM LINE: This is a very well designed and well built machine that Pentax users will enjoy using. Their top-tier cameras are known for solid construction and reliability. If you're using the original K-3 or prior cameras, and if you're still into the APS-C sensor size, it's worth a step up. You will notice the difference.

The Mark of Excellence

By Timothy
Rated 4 out of 5
Date: 2021-07-29

With few exceptions, Pentax and quality are synonymous in my view. Durable, reliable products that meet potentially harsh climate conditions of the Yellowstone Ecosystem with good results. Purchasing the K3 iii meant continued access to other lenses acquired over the years, thus extending the APS-C reputation. Kudos to Pentax for continuing that very popular attribute. Still well into the learning phase of this camera, yet fully aware that quality is determined by the test of time and elements, I'm eager to embark on this adventure.

Fantastic camera

By Michael
Rated 5 out of 5
Date: 2021-07-08

This is an amazing camera. I've had several Pentaxes before, including. K20D, a PZ-1P and an MX - all are/were great, and I enjoyed shooting with old Takumars, as well as newer DAs and FAs. So when I read about the K3III's optical viewfinder I was sold. And, it's all true. Shooting manual lenses is fantastic (no need even for tge green button anymore); the camera can write the aperture to exif (of course you need to tell the camera what it is, but super easy); the groundglass is fabulous, on a par with my best film cameras; focus confirm works perfectly; Iso 800 is completely clean, 1600 - 6400 very usable; the stabilization really works (down to almost a second with the FA31mm), I could go on and on about all the smart things Pentax put in this camera. My goto camera now.

An upgrade from my H1a I bought in 1975..

By Greg
Rated 5 out of 5
Date: 2021-12-04

I bought a K2000 three years ago, had to learn digital photography. The K3 MKIII menu is intuitive. Focus is fast and sharp. The level indicator is something new to me. Reviewing pics. punch the center button, it shows the focus point.

Nice advancement for Pentax

By Douglas
Rated 5 out of 5
Date: 2021-08-19

This new dslr from Pentax implements many nice changes with a few that I didn't really like. This is my fourth Pentax dslr and my second crop. I hoping they don't realize the K-1 Mark III this year, knowing Pentax development, they take their time to make something good. This camera is the same quality I have come to expect from Pentax. Pricewise, this is expensive. I am not a fan of losing the built-in gps, kind of ruins astrotracing features a little. The trade off is worth it for the pentaprism. I hope they release the next gps II unit for the hotshoe soon and that it improves from the past edition. A touch screen on a dslr or any larger than a point and shooter is not really for me. I think camera manufactures are trying to make the interaction for like a phone. Seems like something that I could touch accidently or get all gross over time. I also wish Pentax followed some Fuji's design and had the screen so I could flip it closed and shoot just with the viewfinder. The screen not tilting is not a deal breaker for me. I would have liked tilting, or even being able to flip the screen closed. The other minor disappointment is the charging. I am not sure why camera manufacturers are no longer including battery chargers. Maybe they figure we own them already or they can make more money or maybe there was something about fast charging that made it impractical. Charging the battery from a wall outlet directly in the camera is not a great idea especially since the battery is removable. If there was a power surge could be possible to fry the 2 grand camera. Luckily Pentax didn't change batteries so I can use my old chargers. The upgrades to the Pentax dslr hopefully will be seen in a future released K-1 as well. Although I hope Pentax keep the gps on the K-1. I put the old 43mm on it and need to get out shooting....

Exceeds Expectations for Sports Photography!

By Teresa
Rated 5 out of 5
Date: 2021-08-12

I am a professional sports photographer for universities, high schools, national track websites and a life-long Pentax user. Among many things, the K-3 Mark III definitely delivers in shutter speed, auto focus and build quality. Add to that its weather sealing and durability, which is a Pentax given, and you have the professional camera that we have all been waiting for as an upgrade. I highly recommend Pentax and I am thrilled with the K-3 Mark III!

Definitely an upgrade!

By Steven
Rated 5 out of 5
Date: 2021-08-12

My experience with Pentax goes only as far as a k-50, k-70, and a kp. My k-70 had the dreaded aperture problem so I was looking for either an upgrade to my KP or at least a backup to it. This is definitely a worthy upgrade to my KP. Pros: Autofocus is very responsive compared to the KP, customization options are off the chart, and shutter speed is fast. I've not had a chance to really compare image quality, but I suspect it is the same as the KP if not better. I've also not had a chance to use it in situations requiring high ISO so don't know if there is an improvement to image stabilization or ISO quality. I suspect it is as good as the KP. I definitely notice the brighter and bigger viewfinder and it is helpful for someone like me who wears glasses when composing. I'm able to more consistently see components in the frame, even on the edges. The KP always felt a bit small for my hands and for long shoots, my hands would start to feel it. This is more on par with the k-70 and not nearly as cramped as the KP. It feels good and has good balance. I'm really liking the camera. Given its options and ergonomic improvements, I think it will change how I take photos. I can't say the KP had that kind of impact. Cons: The lack of a tilting rear screen is a disappointment but I rarely used it on the KP as it was so can live without it. Some of the viewfinder in-camera setting displays are a bit of a downgrade, especially the horizon level indicator that can be difficult to see in lighter contrast situations. Both of these are minor to me. The only really major downside I see is the price. I wish it were priced more competitively with the X-T4. Overall though, I think this a really good camera especially if you are invested in the Pentax ecosystem. I look forward to many years of enjoyment.

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The subject recognition feature works still ...

The subject recognition feature works still working through the viewfinder?
Asked by: TheFelipemahler
Yes this feature would still work through the viewfinder.
Answered by: Kirk
Date published: 2021-04-27

Does the K-3 III include the astro tracker ...

Does the K-3 III include the astro tracker feature?
Asked by: Daniel
Unfortunately no. The Astrotracer feature needs GPS built into the camera and the K-3 Mark III does not have GPS. Currently the K-70 is the only model with Astrotracer:
Answered by: Dan
Date published: 2022-01-12

Will it produce 25mp with the Pentax 150-450 ...

Will it produce 25mp with the Pentax 150-450 zoom?
Asked by: Kirk
Yes. This produces 25.7MP images regardless of the lens used. It is fully compatible with the Pentax 150-450mm lens.
Answered by: Yaakov
Date published: 2021-10-17

Will there be cropping with DA lenses?

Will there be cropping with DA lenses?
Asked by: chris
Pentax DA lenses have an image circle size tailored to the APS-C image sensor size, which is smaller -- about 43% of the area -- than the full-frame image sensor size. This camera has an APS-C image sensor. So no, it won't be cropped with DA lenses; it has the image size intended for DA lenses. Now if you use a full-frame lens on it, then yes, that would be cropped -- 1.5 crop factor -- as expected, just like all of Pentax's previous APS-C DSLRs. That said, you would still use the 1.5 crop factor on any lens, DA or otherwise, to know what the lens' field of view will be on this camera. For example, a 50mm lens, whether DA or full-frame, will have the field of view on this camera that a 75mm lens has on full-frame cameras.
Answered by: Greg
Date published: 2021-06-16

I have a Pentax K-70 and after 5000 shots the ...

I have a Pentax K-70 and after 5000 shots the camera has had problems with the solenoid (dark photos), does this camera have the same problem?
Asked by: Luis
There have been no such issues reported on this camera.
Answered by: Kirk
Date published: 2021-06-22

Are my lenses from my K-5 compatible with the ...

Are my lenses from my K-5 compatible with the K-3?
Asked by: SCOTT
Yes, the K-3 iii should be compatible with every K-mount lens ever made, going all the way back to the very first K-mount lenses made in 1975. If a lens works on your K-5, it should work on the K-3 iii. As with all previous Pentax DSLRs, there is a special step to get a meter reading with old lenses that don't have an "A" setting on their aperture ring. Most of these lenses are 1970s & 80s vintage. Apparently the K-3 iii has even better compatibility with those old lenses than previous Pentax DSLRS. See:
Answered by: Greg
Date published: 2021-08-18

Built in Flash ??? NO !?! What a design oversight ...

Built in Flash ??? NO !?! What a design oversight !!!
Asked by: Markus
Most cameras at this level don't have built-in flashes. Built-in flashes are for consumer-grade cameras. This camera's main competitor, the Nikon D500, doesn't have a built-in flash. Also, with the amazing low-light ability, built-in flash just isn't as needed. I used to use built-in flash with my 2003 Pentax *ist D, and later with my K-7. But once I upgraded to the K-5 ii, with its much-improved low-light ability, I never needed the built-in flash again. I still use my big flash unit when I know I'll need it, but when I'm caught out and about without it, I can get the shot with higher ISO. And the K-3 iii improves on the low light ability a few stops more. On the plus side, by omitting a built-in flash, they reduced price, weight, and bulk a little. Let's remember that with this camera's much-bigger fancy new pentaprism, which adds significant bulk, adding a built-in flash too would have been pretty bulky.
Answered by: Greg
Date published: 2021-08-18

‏ I'm debating between the K-1 Mark II full frame ...

‏ I'm debating between the K-1 Mark II full frame and the K-3 mark III.  As a photographer who mainly loves nature and wildlife photography, and after following the new data on the K-3 mark III, I want to know what do you think will be advantage to my needs in the new camera?  And does the figure of 36.4mp in k-1 compared to 26mp not play a role?
Asked by: Nadav
I do alot of bird work. The K3iii eclipses the K-1mkii for that. I own the DFA 150-450 and the DA 1.4x. I can handhold nearly 1000mm equiv in daylight with the K3iii and get awesome images. K-1ii in APS-C mode just not as capable and you are down to 15MP . If you can only buy 1 and FPS (12 fps K3iii, 4fps K-1 FF, 6 fps K-1 aps-c cropmode) is not your highest priority and low ISO image quality is, then its the K-1. If you need action and great mid ISO 1600-4000 work, which good MP count then the K3iii edges out the K-1 IMHO.
Answered by: Chris
Date published: 2021-08-18
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