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Super-high-sensitivity photography to capture dramatic scenes of nature in sharp,
high-resolution images

smc PENTAX-DA 50-135mmF2.8ED[IF] SDM Aperture: F4.5 ; Shutter speed: 1/100 sec. ; Exposure compensation: -0.7EV ; ISO sensitivity: 400 ; White balance: CTE ; Custom image: Landscape

Top sensitivity of ISO 102400
Super-high-sensitivity photography and remarkable imaging power

The PENTAX K-70 features a new accelerator unit, which has been designed to optimize the newly developed, high-performance noise-processing technology. In combination with the PRIME MII imaging engine, this unit effectively reduces noise to a minimum, even during super-high sensitivity shooting at ISO 102400 (standard output sensitivity). This combination not only improves image quality at more commonly used sensitivities, but also delivers beautifully depicted images at higher sensitivities by minimizing graininess. As the result, it expands the boundaries of low-illumination photography.

ISO 800
ISO 3200
ISO 12800
ISO 25600

AA-filter-free design
APS-C-size CMOS image sensor with 24.24 effective megapixels

High-performance image sensor unit for fine-detailed images

The PENTAX K-70’s AA-filter-free design eliminates the AA (anti-aliasing) filter, which has an adverse effect on the camera’s resolving power. This design optimizes the resolving power of the approximately 24.24 effective megapixels provided by the high-resolution APS-C-size CMOS image sensor, while assuring high-speed readout of rich-gradation, 14-bit image data.

AA-filter simulator
State-of-the-art function to minimize moiré and false colors

The PENTAX K-70 features an AA (anti-aliasing) filter simulator,* which effectively minimizes the moiré patterns often generated on subjects with fine, repetitive patterns, and the false colors commonly generated at the edges of high-contrast images. With the help of the SR (Shake Reduction) mechanism, this simulator applies microscopic vibrations to the image sensor unit at the sub-pixel level during image exposure to minimize these adverse effects. It lets you choose the desired visual effect based on your creative intentions —between the filtering effect of the AA simulator and the higher resolving power of an AA-filter-free design.

* This simulator cannot be used in some shooting modes, and doesn’t work with some functions.
* This simulator works most effectively with a shutter speed of 1/1000 second or slower.

■ Principle of optical AA filter

  • Light
  • Color filter
  • AA filter

■ Principle of AA filter simulator

Microscopic vibrations applied at sub-pixel level

PRIME MII imaging engine and new accelerator unit
High-efficiency image processing and effective noise reduction, for true-to-life rendition of gradation and texture

Thanks to the combination of the PRIME MII imaging engine and a newly developed accelerator unit that effectively suppresses noise, the PENTAX K-70 assures true-to-life rendition of gradation and texture at all sensitivity levels.

  • Accelerator unit

In-body SR mechanism
Effective shake reduction with all lenses, assuring improved compensation effects

The PENTAX K-70 features the PENTAX-original, in-body SR (Shake Reduction) mechanism with a compensation effect of 4.5 shutter steps. It works effectively with all PENTAX interchangeable lenses — from ultra-wide-angle to super-telephoto models — and minimizes camera shake in camera-shake-prone conditions, such as when shooting low-light scenes using natural light only or when using a telephoto lens. It also comes in handy with panning shots, since it automatically detects the direction of the camera’s movement with a gyro sensor, and efficiently controls the SR unit to produce the best possible image. Just by keeping the SR mode turned on, you can effortlessly minimize camera shake with both normal images and panning shots.

* Measured in conformity with CIPA testing standards (using the smc PENTAX-DA 18-135mm F3.5-5.6ED AL[IF] DC WR lens, at a focal length of 135mm)

Fine Sharpness and Extra Sharpness
Sharpness-enhancing tools to improve the image rendition of photographic works

A sharpness-enhancing process using thick outlines often spoils the image’s resolution. That’s why the PENTAX K-70 provides a pair of more advanced sharpness-enhancing functions (Fine Sharpness and Extra Sharpness), which are similar to those offered by upper-class models. The Fine Sharpness function outlines the subject with thinner, more natural lines than those created by normal processing to produce a high-quality, fine-detailed image. The Extra Sharpness function emphasizes the subject’s outline more prominently with much finer lines, making it particularly useful for enhancing the outline of a low-contrast subject.

An array of compensation functions
High-quality images assured, even at the edges of the image field

The PENTAX K-70 effectively compensates distortion, vignetting and lateral chromatic aberration of magnification caused by particular characteristics of a lens to deliver sharp, high-contrast images, even at the edges. During RAW-data development, it can even compensate the fringe effect.

Diffraction compensation
Diffraction blur minimized at closed-down apertures

This function compensates the deterioration in the camera’s resolving power that is caused by diffraction phenomena. By properly using lens information to process image data, it compensates the diffraction blur effect by as much as approximately two aperture stops.* This function comes in handy in scenic photography, when you want to close the aperture down to increase the depth of field without compromising the resolving power.

* Measured under RICOH IMAGING in-house testing standards.
• This function is usable with D FA-, DA- and DA L-series lenses. FA-series lenses are also usable, except for some models.

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