Pentax K-1

35mm AF digital SLR camera

Specification

Production details
Announced:February 2016
System: Pentax K (1975)
Imaging plane
Maximum format:35mm full frame
Mount and Flange focal distance:Pentax K [45.5mm]
Imaging plane:35.9 × 24mm CMOS sensor
Resolution:7360 × 4912 - 36 MP
Shutter
Type:Focal-plane
Model:Electronically controlled
Speeds:30 - 1/8000 + B
Sensor-shift image stabilization:Yes
Exposure
Exposure metering:Through-the-lens (TTL)
Exposure modes:Programmed Auto
Aperture-priority Auto
Shutter-priority Auto
Manual
Physical characteristics
Weight:925g
Dimensions:136.5x110x85.5mm

Manufacturer description

DENVER, Colo. February 17, 2016 – Ricoh Imaging Americas Corporation today announced the PENTAX K-1 full-frame digital single-lens reflex (DSLR) camera. The K-1 combines the performance of a full-frame sensor with unique, user-friendly PENTAX technology and convenience features loved by professional and serious amateur photographers the world over.

The foundation of the PENTAX K-1 is its large, full-frame image sensor. This AA-filterless CMOS sensor with 36.4 effective megapixels sets the stage for ultimate creativity, facilitating super-high-resolution images rich in gradation and superb in high-sensitivity rendition.

Built around the full-frame sensor is a compact, high-performance weather-sealed and dustproof body with features only found in PENTAX cameras. “The K-1 is a blend of advanced, full-frame performance with the kind of features and advancements that PENTAX users have come to know and love,” said Jim Malcolm, president, Ricoh Imaging Americas Corporation. “As a result, the K-1 creates a solution for full-frame shooters that is unique in the industry.”

Within its compact body, the PENTAX K-1 features several advanced technologies that help the photographer to produce top results in a wide variety of challenging conditions. SR II Shake Reduction is a newly refined and highly sensitive five-axis shake-reduction system that is capable of reducing camera shake with a compensation range of up to five exposure steps, allowing photographers to freely move and compose – and to focus on their subjects, not the gear. SR II also facilitates other advanced PENTAX-unique features such as AA Filter Simulator, which effectively eliminates moiré effect without the need for an anti-aliasing filter, while increasing sharpness and overall image quality. Key to great autofocus performance on the K-1 is the new SAFOX 12 autofocus mechanism with 33 autofocus points, assuring fast and accurate autofocusing, even in the most demanding shooting situations. A newly-designed optical viewfinder equipped with the famous PENTAX Pentaprism boasts a bright, nearly 100-percent field of view.

In addition to a long list of technological advancements, the PENTAX K-1 also features a number of convenience features, making camera operation fast and easy. Designed to move in ways never before imagined is the new Flexible-tilt LCD monitor—a first for any DSLR camera. This rugged yet highly adjustable display can be positioned to the desired angle horizontally and vertically, making it easy to shoot at challenging angles. Other significant firsts include the K-1’s Operation Assist Lights – small, white LEDs that facilitate camera operation in low-light environments, making it easy to change lenses, swap memory cards and adjust back-of-camera controls, and a Smart Function dial that allows photographers to easy select frequently-used functions without going into the LCD menu.

Current PENTAX lens owners will appreciate that they can incorporate their APS-C lens collection into their new PENTAX K-1 full-frame camera kit by utilizing the K-1’s Crop Mode, which offers settings in-camera for either APS-C or Full-Frame sized shooting, regardless of the attached lens. There is also an “auto” mode that detects the lens type and sets the camera accordingly.

Upon launch, PENTAX is offering 12 full-frame compatible lenses, including two new models being announced concurrent with the K-1 camera: the HD PENTAX-D FA 15-30mm f.2.8 ultra-wide angle zoom lens and the HD PENTAX-D FA 28-105mm f/3.5-5.6 compact, lightweight zoom lens. (Note: separate news releases have been issued today to provide details on each lens).

| Pricing and Availability |

The PENTAX K-1 camera will be available April 2016 at www.ricohimaging.com and retail outlets nationwide for a manufacturer’s suggested retail price of $1,799.95.

Main Features

1. High-resolution, fine-gradation images supported by approximately 36.4 effective megapixels

The K-1 features an AA (anti-aliasing) filterless design that prioritizes image resolution, as well as the new PRIME IV imaging engine, which is capable of 14-bit RAW-format image recording. The K-1’s unique full frame sensor and imaging engine design also allows for super-high-sensitivity shooting up to ISO 204800, producing beautiful, high-resolution images.

2. New-generation SR II five-axis system

In-body SR II mechanism assures optimal shake reduction performance

The SR II (Shake Reduction II) five-axis mechanism enables accurate control of the large full-frame image sensor with all compatible PENTAX interchangeable lenses.* In addition to camera shake caused by pitch and yaw, it effectively compensates for camera shake caused by horizontal and vertical shift, as well as camera shake caused by roll, which is difficult to deal with by lens-installed shake reduction mechanisms. Even when taking a panning shot, this system automatically detects the direction of the camera’s movement, and efficiently controls the SR II unit to always produce the best image possible.

Pixel Shift Resolution System with a new motion correction function

This system uses the latest super-resolution technology, which captures four images of the same scene by shifting the image sensor by a single pixel for each image, then synthesizes them into a single composite image. Compared to the conventional Bayer system, in which each pixel has only a single color data unit, this innovative system obtains all color data within each pixel. It incorporates a new motion correction function, which automatically detects a moving object during continuous shooting.

Innovative AA filter simulator to minimize moiré

By applying microscopic vibrations to the image sensor, the K-1's AA (anti-aliasing) filter simulator provides the same level of moiré reduction as an optical AA filter.

Supportive shooting functions

Since the K-1’s SR II unit has a flexible design that tilts the image sensor unit in all directions, it provides a host of handy shooting functions, including auto level compensation, image-composition fine-adjustment, and AstroTracer, which simplifies advanced astronomical photography using a built-in GPS module.

3. Flexible tilt-type LCD monitor to accommodate various shooting angles

The K-1 features a newly designed, Flexible-tilt LCD monitor, which tilts horizontally, vertically or diagonally with a single action, without deviating from the lens’s optical axis. 35 degrees of horizontal and 44 degrees of vertical adjustment can be achieved; the LCD panel can even be laid flat up or down. The 3.2-inch LCD monitor features a tempered-glass front panel for added durability, a unique air-gapless construction effectively reduces reflection, and a new Outdoor View Setting mode allows the user to instantly choose the desired monitor brightness level.

4. Newly developed SAFOX 12 with 33 sensor points and full-frame-proportioned AF frame

The SAFOX 12 AF sensor module features 33 AF sensors (25 cross-type sensors positioned in the middle). The center sensor and the two sensors located just above and below it are designed to detect the light flux of an F2.8 lens, making it easy to obtain pinpoint focus on a subject when using a large-aperture lens.

5. Upgraded PENTAX Real-Time Scene Analysis System, with application of artificial intelligence technology

The K-1’s advanced PENTAX Real-Time Scene Analysis System performs near-instant analysis of exposure, color, movement and other factors. Combined with a breakthrough artificial intelligence technology called deep learning, the K-1 instantly optimizes settings for even the most difficult shooting situations.

6. Easy-to-focus optical viewfinder with nearly 100-percent field of view

Newly developed for its 35mm full-frame design, the K-1’s optical viewfinder provides a nearly 100-percent field of view and an approximately 0.7-times magnification. A Natural Bright Matt III focusing screen allows ease of focusing and a true-to-life rendition of defocused areas in the viewfinder image.

7. High-speed continuous shooting with a top speed of approximately 4.4 images per second

The K-1 has a larger shutter unit that easily accommodates the camera’s full-frame image sensor and provides high-speed, high-accuracy control of the mirror unit. A high-speed data transmission system incorporated in the PRIME IV imaging engine allows the user to continuously record as many as 17 images in the RAW format (or a maximum of 70 images in the JPEG Best format) in a single sequence, at a top speed of approximately 4.4 images per second.

8. Supportive shooting functions to improve picture-taking efficiency and operational comfort

  • Operation assist light function, which provides LED lights above the lens mount, behind the LCD monitor, at the memory car slot, and at the cable switch terminal to facilitate fast and easy operation in poorly lit settings.
  • Key lock function, which prevents erroneous operation of the four-way controller and other exposure-related control buttons.
  • Smart function, which allows the user to swiftly choose and set desired functions using just the function dial and the set dial on the camera’s upper panel, without referring to the menu screen on the LCD monitor.
  • Control panel customize function allows the user to change aspects of the on-screen menu.

9. Compact, solid body with dustproof, weather-resistant construction

Constructed of sturdy yet lightweight magnesium alloy with the inclusion of 87 sealing parts in the body, the K-1 also boasts a dustproof, weather-resistant and cold-resistant construction.

Other Features

  • Wi-Fi operation allowing camera control and image transfer to tablet or smartphone via the free ImageSync app
  • Full HD movie recording at 1920 x 1080 pixels in the H.264 recording format
  • Built-in GPS module and electronic compass
  • High-grade DR II (Dust Removal II) mechanism for effective elimination of dust on the image sensor using ultrasonic vibration
  • Crop mode with a choice of image area from AUTO, FF (Full Frame) and APS-C, to accommodate different types of lenses
  • Clarity control and Skin Tone correction functions, a pair of the latest image processing technologies developed by RICOH Central Laboratory
  • HDR (High Dynamic Range) shooting mode with RAW-format data filing, usable in handheld shooting
  • The PENTAX-invented hyper operating system for quick, accurate response to the photographer's creative intentions
  • Dual SD card slots for memory card flexibility (compatible with SDXC UHS-1 speed class in SDR104 buss speed mode)
  • Compensation of various parameters: lens distortion, lateral chromatic aberration, diffraction, and brightness level at image-field edges. Fringe effect compensation is also available in RAW-format processing.
  • Compatibility with PENTAX Image Transmitter 2 tethering software (Software update required from RICOH IMAGING official website)
  • Digital Camera Utility 5 software (latest version) included

Optional Accessory

D-BG6 Battery Grip

This battery grip is designed to facilitate vertical-position shooting with the PENTAX K-1 camera body. It provides a shutter release button, a set of control buttons (AE lock, AF, ISO, exposure compensation, green), a preview lever, and dual electronic dials — just like those provided on the camera body. It also features the dustproof, weather-resistant construction identical to the PENTAX K-1 camera body. In addition to the dedicated lithium-ion rechargeable batteries, it also accepts six AA-size batteries.

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35mm full frame

43.27 24 36
  • Dimensions: 36 × 24mm
  • Aspect ratio: 3:2
  • Diagonal: 43.27mm
  • Area: 864mm2

Travellers' choice

Note

Among autofocus lenses designed for 35mm full-frame mirrorless cameras only. Speed of standard and telephoto lenses is taken into account.

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Cannot compare the lens to itself.

Image stabilizer

A technology used for reducing or even eliminating the effects of camera shake. Gyro sensors inside the lens detect camera shake and pass the data to a microcomputer. Then an image stabilization group of elements controlled by the microcomputer moves inside the lens and compensates camera shake in order to keep the image static on the imaging sensor or film.

The technology allows to increase the shutter speed by several stops and shoot handheld in such lighting conditions and at such focal lengths where without image stabilizer you have to use tripod, decrease the shutter speed and/or increase the ISO setting which can lead to blurry and noisy images.

Original name

Lens name as indicated on the lens barrel (usually on the front ring). With lenses from film era, may vary slightly from batch to batch.

Format

Format refers to the shape and size of film or image sensor.

35mm is the common name of the 36x24mm film format or image sensor format. It has an aspect ratio of 3:2, and a diagonal measurement of approximately 43mm. The name originates with the total width of the 135 film which was the primary medium of the format prior to the invention of the full frame digital SLR. Historically the 35mm format was sometimes called small format to distinguish it from the medium and large formats.

APS-C is an image sensor format approximately equivalent in size to the film negatives of 25.1x16.7mm with an aspect ratio of 3:2.

Medium format is a film format or image sensor format larger than 36x24mm (35mm) but smaller than 4x5in (large format).

Angle of view

Angle of view describes the angular extent of a given scene that is imaged by a camera. It is used interchangeably with the more general term field of view.

As the focal length changes, the angle of view also changes. The shorter the focal length (eg 18mm), the wider the angle of view. Conversely, the longer the focal length (eg 55mm), the smaller the angle of view.

A camera's angle of view depends not only on the lens, but also on the sensor. Imaging sensors are sometimes smaller than 35mm film frame, and this causes the lens to have a narrower angle of view than with 35mm film, by a certain factor for each sensor (called the crop factor).

This website does not use the angles of view provided by lens manufacturers, but calculates them automatically by the following formula: 114.6 * arctan (21.622 / CF * FL),

where:

CF – crop-factor of a sensor,
FL – focal length of a lens.

Mount

A lens mount is an interface — mechanical and often also electrical — between a camera body and a lens.

A lens mount may be a screw-threaded type, a bayonet-type, or a breech-lock type. Modern camera lens mounts are of the bayonet type, because the bayonet mechanism precisely aligns mechanical and electrical features between lens and body, unlike screw-threaded mounts.

Lens mounts of competing manufacturers (Canon, Nikon, Pentax, Sony etc.) are always incompatible. In addition to the mechanical and electrical interface variations, the flange focal distance can also be different.

The flange focal distance (FFD) is the distance from the mechanical rear end surface of the lens mount to the focal plane.

Lens construction

Lens construction – a specific arrangement of elements and groups that make up the optical design, including type and size of elements, type of used materials etc.

Element - an individual piece of glass which makes up one component of a photographic lens. Photographic lenses are nearly always built up of multiple such elements.

Group – a cemented together pieces of glass which form a single unit or an individual piece of glass. The advantage is that there is no glass-air surfaces between cemented together pieces of glass, which reduces reflections.

Focal length

The focal length is the factor that determines the size of the image reproduced on the focal plane, picture angle which covers the area of the subject to be photographed, depth of field, etc.

Speed

The largest opening or stop at which a lens can be used is referred to as the speed of the lens. The larger the maximum aperture is, the faster the lens is considered to be. Lenses that offer a large maximum aperture are commonly referred to as fast lenses, and lenses with smaller maximum aperture are regarded as slow.

In low-light situations, having a wider maximum aperture means that you can shoot at a faster shutter speed or work at a lower ISO, or both.

Closest focusing distance

The minimum distance from the focal plane (film or sensor) to the subject where the lens is still able to focus.

Closest working distance

The distance from the front edge of the lens to the subject at the maximum magnification.

Magnification ratio

Determines how large the subject will appear in the final image. For example, a magnification ratio of 1:1 means that the image of the subject formed on the film or sensor will be the same size as the subject in real life. For this reason, a 1:1 ratio is often called "life-size".

Manual focus override in autofocus mode

Allows to perform final focusing manually after the camera has locked the focus automatically. Note that you don't have to switch camera and/or lens to manual focus mode.

Manual focus override in autofocus mode

Allows to perform final focusing manually after the camera has locked the focus automatically. Note that you don't have to switch camera and/or lens to manual focus mode.

Electronic manual focus override is performed in the following way: half-press the shutter button, wait until the camera has finished the autofocusing and then focus manually without releasing the shutter button using the focusing ring.

Electromagnetic diaphragm control system

Provides highly accurate diaphragm control and stable auto exposure performance during continuous shooting.

Manual diaphragm

The diaphragm must be stopped down manually by rotating the detent aperture ring.

Preset diaphragm

The lens has two rings, one is for pre-setting, while the other is for normal diaphragm adjustment. The first ring must be set at the desired aperture, the second ring then should be fully opened for focusing, and turned back for stop down to the pre-set value.

Semi-automatic diaphragm

The lens features spring mechanism in the diaphragm, triggered by the shutter release, which stops down the diaphragm to the pre-set value. The spring needs to be reset manually after each exposure to re-open diaphragm to its maximum value.

Automatic diaphragm

The camera automatically closes the diaphragm down during the shutter operation. On completion of the exposure, the diaphragm re-opens to its maximum value.

Fixed diaphragm

The aperture setting is fixed at F/ on this lens, and cannot be adjusted.

Number of blades

As a general rule, the more blades that are used to create the aperture opening in the lens, the rounder the out-of-focus highlights will be.

Some lenses are designed with curved diaphragm blades, so the roundness of the aperture comes not from the number of blades, but from their shape. However, the fewer blades the diaphragm has, the more difficult it is to form a circle, regardless of rounded edges.

At maximum aperture, the opening will be circular regardless of the number of blades.

Weight

Excluding case or pouch, caps and other detachable accessories (lens hood, close-up adapter, tripod adapter etc.).

Maximum diameter x Length

Excluding case or pouch, caps and other detachable accessories (lens hood, close-up adapter, tripod adapter etc.).

For lenses with collapsible design, the length is indicated for the working (retracted) state.

Weather sealing

A rubber material which is inserted in between each externally exposed part (manual focus and zoom rings, buttons, switch panels etc.) to ensure it is properly sealed against dust and moisture.

Lenses that accept front mounted filters typically do not have gaskets behind the filter mount. It is recommended to use a filter for complete weather resistance when desired.

Fluorine coating

Helps keep lenses clean by reducing the possibility of dust and dirt adhering to the lens and by facilitating cleaning should the need arise. Applied to the outer surface of the front and/or rear lens elements over multi-coatings.

Filters

Lens filters are accessories that can protect lenses from dirt and damage, enhance colors, minimize glare and reflections, and add creative effects to images.

Lens hood

A lens hood or lens shade is a device used on the end of a lens to block the sun or other light source in order to prevent glare and lens flare. Flare occurs when stray light strikes the front element of a lens and then bounces around within the lens. This stray light often comes from very bright light sources, such as the sun, bright studio lights, or a bright white background.

The geometry of the lens hood can vary from a plain cylindrical or conical section to a more complex shape, sometimes called a petal, tulip, or flower hood. This allows the lens hood to block stray light with the higher portions of the lens hood, while allowing more light into the corners of the image through the lowered portions of the hood.

Lens hoods are more prominent in long focus lenses because they have a smaller viewing angle than that of wide-angle lenses. For wide angle lenses, the length of the hood cannot be as long as those for telephoto lenses, as a longer hood would enter the wider field of view of the lens.

Lens hoods are often designed to fit onto the matching lens facing either forward, for normal use, or backwards, so that the hood may be stored with the lens without occupying much additional space. In addition, lens hoods can offer some degree of physical protection for the lens due to the hood extending farther than the lens itself.

Teleconverters

Teleconverters increase the effective focal length of lenses. They also usually maintain the closest focusing distance of lenses, thus increasing the magnification significantly. A lens combined with a teleconverter is normally smaller, lighter and cheaper than a "direct" telephoto lens of the same focal length and speed.

Teleconverters are a convenient way of enhancing telephoto capability, but it comes at a cost − reduced maximum aperture. Also, since teleconverters magnify every detail in the image, they logically also magnify residual aberrations of the lens.

Lens caps

Scratched lens surfaces can spoil the definition and contrast of even the finest lenses. Lens covers are the best and most inexpensive protection available against dust, moisture and abrasion. Safeguard lens elements - both front and rear - whenever the lens is not in use.