The Pentax K-3 Mark III DSLR Camera (Black) 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.
The PENTAX K-3 Mark III incorporates a newly adopted, back-illuminated imaging sensor with approximately 25.7 effective megapixels. It also features an AA (anti-aliasing)-filter-free design to faithfully reproduce the delicacy of light, or the fine outlines of a subject.
PENTAX has made great improvement in overall image quality, by efficiently controlling the camera’s noise-reduction process while paying the utmost attention to natural reproduction of gradation and colour.
ISO 100 to 1,600,000
Thanks to its multi-dimensional image space filtering process, the PENTAX K-3 Mark III greatly reduces noise, while still retaining the subtle outlines of a subject. Advanced technology optimizes the camera’s resolving power, and faithfully reproduces the subject's texture and detail.
Image description in the lower sensitivity range is also improved, while minimizing unfaithful reproduction of blacks in the higher sensitivity range where colour reproduction becomes more difficult. Even at the top sensitivity of ISO 1,600,000, it delivers a natural, well-defined image with a sharp subject outline and vivid colours.
New-generation Fine Sharpness function
With a new PRIME V imaging engine, the PENTAX K-3 Mark III features a much-improved Fine Sharpness function that more faithfully and finely reproduce the subject's outline and detail.
Preset as a default setting, this function reproduces the subject's details more naturally and sharply, while reducing the adverse effect of noise to a minimum.
AA (anti-aliasing) filter simulator
Effectively minimizes moiré and false colour by activating the SR II stabilization mechanism to apply microscopic vibrations to the image sensor during exposure. For ordinary shooting, you can turn this off to maximize the camera's resolving power as delivered by its AA-filter-free design but when you come across scenes requiring anti-aliasing you can reduce adverse effect by turning it on.
4K movie recording
The PENTAX K-3 Mark III captures 4K-resolution movie clips (3840 x 2160 pixels; 30 or 24 frames per second) and the camera’s touch-screen panel makes it easy to select movie-recording functions and exposure settings, while the SR II mechanism provides its shake-compensation effect for smooth and stable movie recording.
PRIME V imaging engine and the second-generation accelerator unit provides a harmony of flawless, high-speed operations and super-high-sensitivity plus high-quality imaging at a level of performance higher than ever before.
The overall performance of the PENTAX Real-time Scene Analysis System and the autofocus system has been improved to ensure: flawless, high-speed operation; super-high-sensitivity, high-resolution imaging; better autofocus performance; and a broader range of shooting functions.
This system performs an in-depth analysis of each individual scene by assessing factors such as the brightness distribution over the image field and the subject’s shape, colour and motion.
The incorporation of a new RGBIr AE sensor with approximately 307,000 pixels detects the subject in greater detail than before for improved performance. Coupled with the state-of-the-art imaging engine, it performs accurate detection of the subject's face and eyes in viewfinder shooting, along with high-precision tracking of moving subjects. An image recognition system adopting Deep Learning technology, further provides highly dependable exposure control and automatic selection of the optimal focus point.
The PENTAX K-3 Mark III's SR II mechanism compensates for camera shake caused by horizontal and vertical shift, roll, pitch and yaw, with a wide compensation range up to approximately 5.5 shutter steps. In addition to the all-purpose Auto mode, this mechanism also provides a Panning mode to capture slow-moving subjects. You can choose the mode that provides the ideal compensation effect for your subject.
Pixel Shift Resolution System
By taking advantage of the SR II mechanism, this innovative system captures four images of the same scene by slightly shifting the image sensor for each image to obtain all RGB colour data for each pixel, then synthesizes them into a single, super-high-resolution composite image. This assists the camera in producing super-high-resolution images with true-to-life colours free of false colour or noise.
Thanks to the combination of a newly developed mirror and shutter driving unit and the high-speed, high-performance PRIME V imaging engine, the PENTAX K-3 Mark III provides a high-speed drive system capable of a maximum speed up to 12 images per second in AF.S mode, or approximately 11 images per second in AF.C mode.
To improve driving speed during continuous shooting and upgrade the performance of AF and AE systems, the PENTAX K-3 Mark III features a new mirror and shutter driving unit to greatly reduce the time needed to drive the mirror and shutter mechanisms. As a result, the time required to capture a single image has been reduced to about two-thirds of the previous PENTAX K-3 II.
Highly dependable, responsive coreless motors drive the mirror and shutter mechanisms. Light sensors monitor the position of the cam gears driven by these motors with great precision, assuring more accurate control of the drive and stop points during high-speed continuous shooting.
Reduced Mirror Weight
The weight of the entire main mirror unit has been reduced to minimize collision energy, while a new damper mechanism instantly stops the mirror action to reduce mirror bounce. The sub-mirror’s drive and stop mechanism also features a new design to optimize mirror action and reduce mirror bounce.
The number of focus points in the PENTAX K-3 Mark III have been increased to 101, from 27 in the PENTAX K-3 II. The AF area also has been greatly expanded. Of 41 user-selectable points, 25 are cross-type sensors.
This high-density AF system enhances the flexibility of image composition, while optimizing focusing accuracy on the subject. Since its middle focus point is designed to detect an F2.8 luminance flux, the camera assures super-high-precision focusing when using a bright lens with an open aperture of F2.8 or larger.
AF area selection
The PENTAX K-3 Mark III provides a choice of the AF area from Auto Area, Zone Select, Select, Expanded Select Area (S, M or L), Select (S) and Spot. A newly installed AF point selector lever makes it easier to intuitively select the optimum focus point. Since the camera displays the selected AF coverage area and the selected AF focus point in the viewfinder window, you can adjust the image composition and select the focus point simultaneously.
In developing the PENTAX K-3 Mark III, PENTAX focused especially on superb handling and easy carrying. While making many functional improvements over the PENTAX K-3 II, PENTAX kept the width and height at the same dimensions as the PENTAX K-3 II, while reducing the depth (the space between the lens mount and the LCD monitor surface) by approximately 2.5mm. This slim design allows for a greater protrusion of the viewfinder eyepiece to make image-viewing easier, while realizing PENTAX’s design concept of a compact body size and easy viewfinder photography.
For comfortable shooting and easy carrying, the PENTAX K-3 Mark III’s grip and control-button layout have been optimized to accommodate different hand sizes and finger lengths. Perfected after producing a series of mock-ups and conducting repeated verifications, they let you to concentrate completely on your photo shooting.
The PENTAX K-3 Mark III features a leaf switch, a mechanism previously used in the PENTAX 645Z and PENTAX K-1. Compared to the tactile switch more commonly used in compact SLR cameras, the leaf switch provides a lighter, smoother shutter action and minimizes the camera shake caused by the shutter-release action. It also helps you by providing effortless hold-down of the shutter-release button during continuous shooting. You can feel the smooth action and speedy response every time you press the shutter-release button.
The conventional Hyper Operation system allows you to instantly shift the AE mode to Tv (Shutter-priority) or Av (Aperture-priority) when the camera’s exposure mode is set to P (Program). The PENTAX K-3 Mark III's new-generation Hyper Operation system provides more flexible exposure-mode control, by adding a new Advanced mode* to the conventional Standard mode.
By turning the front/rear electronic dial, you can instantly switch the AE mode from P to Tv or Av. Also, by providing single-action switching between Tv and Av, this mode assures intuitive operation in capturing an image, by emphasizing the subject’s motion, or the depth of field of the scene.
This new mode not only provides speedy switching between Tv and Av, but also features instant shift to the TAv (Shutter/Aperture-priority) mode simply by changing the shutter-speed and aperture settings. Also, by changing the ISO sensitivity setting, you can flawlessly shift to the M (Manual) mode, harmonizing the easy photo-shooting of Programmed AE operation with the flexible exposure control of manual operation.
The PENTAX-original Smart Function provides easy, single-action selection of menu items and functions.
Featuring a new Smart Function button, the PENTAX K-3 Mark III now lets you preprogram a maximum of five functions from 22 options, and displays a list of the selected functions in the viewfinder window, so you can select the desired function without removing your eye from the viewfinder. It even lets you select and program the desired values for each function, allowing you to more precisely customize this function to meet your preferences.
Customization of control buttons
Featuring 10 customizable control buttons positioned around its body, the PENTAX K-3 Mark III allows you to assign the desired function from 29 options to each of them. Thanks to this customized camera operation, you are guaranteed to have the same comfort and ease of operation as with your current camera.
Customization of electronic dials
The PENTAX K-3 Mark III lets you customize the functions of the front/rear electronic dials, Green button and Smart Function dial (when the Smart Function is assigned to one of the electronic dials). You can also set the functions separately based on the shooting format (still-image or video) or exposure mode.
You can even set the ISO button shift to the ISO Auto mode, or use the exposure compensation button to function as a reset button. Simply by assigning the desired function to each of these buttons, you can easily and freely customize camera operations.
The PENTAX K-3 Mark III features a high-performance viewfinder with a high-refraction glass pentaprism to provide approximately 1.05-times magnification (with an FA 50mm F1.4 lens set at infinity). Despite the compact, lightweight APS-C-format SLR body, it delivers a truthful, wide-view image equal to that of a full-frame SLR, and helps you to become more fully immersed in the photo-shooting process.
This viewfinder provides an almost 10-percent increase in brightness, thanks to the improved reflectance of the pentaprism, while also assuring a nearly 100-percent field of view. By incorporating a distortion-compensating optical element and optimizing the lens coatings, it provides natural, true-to-life image rendition with high-magnification observations.
Since the viewfinder eyepiece is designed to protrude from the LCD viewfinder display screen — to prevent your nose from contacting the camera body — you can look into the viewfinder more naturally and comfortably.
The eyepiece also features an eye sensor, which turns the monitor off the moment you bring your eye up to the eyepiece ring. This prevents the status screen’s illumination from affecting visibility during shooting, while allowing you to capture images more comfortably.
The PENTAX K-3 Mark III features a transparent LCD viewfinder display that provides a broader range of data in the viewfinder window. Because you can adjust the camera’s settings without taking your eye away from the viewfinder, you can concentrate more fully on the subject.
The camera also allows you to program the desired combination of display data, such as grid pattern and AF focus point, making it easier to swiftly change settings for a specific scene or subject.
By installing the dedicated Image Sync application in your mobile device, you can use a variety of wireless LAN functions, including transfer of images captured by the camera (an automatic image transfer function is available when the wireless LAN connection is activated) and an automatic resizing function to reduce the image size for transfer. These function make saving and using captured images easier and more flexible. This application also provides remote control of camera functions using your mobile device.
The PENTAX K-3 Mark III is compatible with Bluetooth 4.2 for transferring the position data detected by a mobile device to the camera via Image Sync and recording it on a captured image, making it simple to organize images captured in the field.
The camera features a USB Type-C terminal for battery recharging using a USB power charger (standard accessory), personal computer or portable battery. You can also recharge the camera from an electric outlet using the optional K-AC166 AC Adapter.
Digital Camera Utility™ 5
Included in the product package, this software lets you develop RAW-format images, and also save, edit and organize images recorded in JPEG or TIFF format. Supported by the acclaimed SILKYPIX® image development engine, it provides high-speed RAW-data development and a range of image-editing tools to apply desired finishing touches to captured images.
Depth-of-field Bracketing and Motion Bracketing
By automatically shifting the aperture and shutter-speed settings, these creative tools produce a set of three images with a different level of bokeh or motion effects.
Clarity Control and Skin Tone Correction
The Clarity Control function lets you control subject texture or image clarity by effectively adjusting the smoothness of the subject's surface. For instance, it emphasizes the glossy texture of metals, or the transparency of a crystal-clear sky or splashing water. The Skin Tone Correction function automatically recreates the natural texture and healthy tone of the subject’s skin, without affecting high-resolution images of the hair and clothes or the background.
HDR (High Dynamic Range)
For a scene with extreme highlights and shadows, the camera produces a single composite image without any washed-out or pitch-black areas. Since the camera retains captured images as a single RAW-format file, you can choose the degree of the HDR effect, or turn this function off, during the development of RAW-format images.
The camera's Multi-exposure mode creates a single composite image from multiple images, while you select the desired synthesis mode from Average, Additive and Comparative Brightness.
Interval Shooting and Interval Composite
The Interval Shooting function automatically captures a number of images at a user-selected interval. The Interval Composite function is a creative tool that synthesizes multiple images captured by the Interval Shooting function into a single composite image.
A range of image-editing tools
The PENTAX K-3 Mark III features a variety of convenient creative tools to edit captured images, including: Composition Adjustment for flexible trimming of an image (with a choice of an aspect ratio and the adjustment of the image’s tilt); Level Correction; and White Balance Control. The camera also provides a choice of 18 digital filters (or 11 filters during shooting) to add a unique visual effect to a captured image. You can apply as many as seven filters to a single image.
With the PENTAX K-3 Mark III, you can select the desired set of AF modes and functions based on the subject’s motion, or the prevailing photographic conditions.
Auto Horizon Correction and Composition Adjustment
Taking advantage of the SR mechanism, the camera provides the Auto Horizon Correction function to automatically compensate for the image’s horizontal tilt, and the Fine Composition Adjustment function to correct slight tilts — horizontally, vertically and in rotational directions.
In addition to compensating for distortion, vignetting at the edges, and lateral chromatic aberration caused by specific lens properties, the PENTAX K-3 Mark III compensates for the drop in resolving power caused by diffraction, which results from capturing an image at closed-down aperture.
In-body RAW data development
The PENTAX K-3 Mark III provides in-body development of RAW-format image files, and saves them as separate JPEG- or TIFF- files. You can add a desired visual effect or finishing touch to a captured image by compensating for lens properties, adjusting white balance and controlling various parameters of the Custom Image modes
Other noteworthy features:
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|Lens Mount||Pentax K|
|Camera Format||APS-C (1.5x Crop Factor)|
|Sensor Resolution||Actual: 26.78 Megapixel
Effective: 25.73 Megapixel (6192 x 4128)
|Sensor Size||23.3 x 15.5 mm|
|Image File Format||DNG, JPEG, Raw|
|Image Stabilization||Sensor-Shift, 5-Axis|
|ISO Sensitivity||Auto, 100 to 1600000|
|Shutter Speed||Mechanical Shutter
1/8000 to 30 Seconds
0 to 20 Minutes in Bulb Mode
|Metering Method||Center-Weighted Average, Highlight Weighted, Multi-Zone, Spot|
|Exposure Modes||Aperture 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|
|White Balance||Auto, CTE, Cloudy, Color Temperature, Daylight, Fluorescent (Cool White), Fluorescent (Day White), Fluorescent (Daylight), Fluorescent (Warm White), Manual, Multi Auto WB, Shade, Tungsten|
|Continuous Shooting||Mechanical Shutter
Up to 12 fps at 25.7 MP for up to 37 Frames (JPEG) / 32 Frames (Raw)
Up to 7 fps at 25.7 MP for up to 60 Frames (JPEG) / 37 Frames (Raw)
Up to 2.5 fps at 25.7 MP for up to 90 Frames (JPEG) / 39 Frames (Raw)
UHD 4K (3840 x 2160) at 23.976p/29.97p
Full HD (1920 x 1080) at 23.976p/29.97p/59.94p
|Recording Limit||Up to 25 Minutes|
|Audio Recording||Built-In Microphone (Stereo)
External Microphone Input (Stereo)
|Focus Type||Auto and Manual Focus|
|Focus Mode||Continuous-Servo AF (C), Manual Focus (M), Single-Servo AF (S)|
|Autofocus Points||Phase Detection: 101 (25 Cross-Type)|
|Autofocus Sensitivity||-4 to +18 EV|
|Viewfinder Type||Optical (Pentaprism)|
|Viewfinder Eye Point||20.5 mm|
|Viewfinder Magnification||Approx. 1.05x|
|Diopter Adjustment||-4 to +1|
|Display Type||Fixed Touchscreen LCD|
|Flash Modes||Auto, 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 Speed||1/200 Second|
|Flash Compensation||-2 to +1 EV (1/3, 1/2 EV Steps)|
|Dedicated Flash System||P-TTL|
|External Flash Connection||Hot Shoe, PC Terminal|
|Media/Memory Card Slot||Slot 1: SD/SDHC/SDXC (UHS-II)
Slot 2: SD/SDHC/SDXC (UHS-I)
|Connectivity||USB Type-C (USB 3.2 Gen 1), HDMI D (Micro), 3.5mm Headphone, 3.5mm Microphone, 2.5mm Sub-Mini, PC Sync Socket|
|Operating Temperature||14 to 104°F / -10 to 40°C|
|Operating Humidity||0 to 85%|
|Battery||1 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|
|Weight||1.8 lb / 820 g (Body with Battery and Memory)
1.6 lb / 735 g (Body Only)