HD PENTAX-D FA 24-70mmF2.8ED SDM WR
Aperture : F3.5 ; Shutter speed : 1/160 sec. ; Exposure compensation : 0.0EV ;
Sensitivity : ISO 100 ; White balance : Daylight ; Custom image : Portrait
Supported by the approximately 86,000-pixel RGB light-metering sensor and the new PRIME IV imaging engine, the PENTAX Real-time Scene Analysis System analyzes such factors as brightness distribution in the image field, the subject’s primary color and its motion with great accuracy and efficiency. In addition, by adopting a breakthrough artificial intelligence technology called deep learning to its image detection algorithm*, this system assesses each individual scene more accurately, while optimizing the accuracy and performance of the light-metering, exposure-control and autofocus systems, and selecting the most appropriate finishing touch for a given scene or composition.
Newly developed AF system, with an expanded AF detection area
The K-1’s AF frame has been widened to optimize the ease of image composition over a larger 35mm full-frame image field. Thanks to the development of a new SAFOX 12 AF sensor module, its autofocus area is approximately 40 percent wider than a conventional AF frame.* In order to contain a longer optical path required for the expanded AF area within a compact housing, the K-1 features an innovative, efficient optical design in which the incoming light is turned back within the AF module. Thanks to the optimization of the condenser lens, it also provides an increased number of AF sensor points (33 in total). This state-of-the-art AF module boosts both compact dimensions and exceptional image-forming performance.
This new AF sensor module features two reflex mirrors. By reflecting the incoming light flux twice on these mirrors, it provides a longer optical path, while its overall size has been kept nearly identical to that of SAFOX 11
A light source sensor is positioned next to the pentaprism to optimize autofocusing accuracy by compensating for focusing errors caused by specific artificial light sources.
The K-1’s approximately 86,000-pixel RGB light-metering sensor not only delivers outstanding resolving power, but also detects colors with great precision. After accurately measuring the subject’s shape, primary color and motion, it feeds the obtained data to the PENTAX Real-time Scene Analysis System for extra-accurate scene analysis.
Assuring reliable, unfailing focus on the subject
The K-1’s sophisticated 33-point AF system has a high-density distribution of AF sensors to effectively monitor crucial areas of the image field, while providing 25 cross-shaped sensors to assure extra-accurate focus on the subject.
Three center sensors are designed to detect the luminance flux of an F2.8 lens for high-precision autofocusing. When using a very fast lens with a shallow depth of field, these sensors can greatly improve the focusing accuracy.
This mode lets you select a set of nine points forming a square, which can be shifted as desired by moving the center point. It detects a subject placed within this square, optimizes the focus, and tracks its movement — all automatically.
This mode lets you select one of 33 AF points to focus on the subject, and makes the K-1 automatically track the subject and refocus on it with the help of the neighboring points, even when it moves away from the initial point. You can select the desired expansion area from nine, 25 or 33 points.*
Supported by the PENTAX Real-time Scene Analysis System, the K-1’s Auto Tracking function accurately detects the subject’s motion based on various factors including color, then keeps pinpoint focus on the subject throughout the imaging process by automatically shifting the in-focus point.
Much-improved accuracy, through the adoption of artificial intelligence technology
Supported by the PENTAX Real-time Scene Analysis System, the K-1’s Scene Analyze AUTO mode automatically optimizes exposure settings, and selects the most appropriate finishing touch for your subject. When using the optical viewfinder, it is also assisted by an algorithm that adopts the deep learning artificial intelligence technology, and makes an extensive analysis of a given scene based on the enormous volume of data accumulated from previous scenes.
In addition to the conventional Program (P), Aperture-Priority (A) and Shutter-Priority (Tv) modes, the K-1 also provides the PENTAX-original Sensitivity-Priority (Sv) and Shutter-speed/Aperture-Priority (TAv) modes, both of which assure proper exposure on the subject by factoring the ISO sensitivity more prominently into exposure-control operation. This multi-mode system assures more flexible control of exposure settings to express the subject’s motion or the depth of field. It also provides a wide exposure compensation range of ±5EV (in still-image shooting) to expand a range of exposure control.
The K-1 features an electronically controlled, vertical-run shutter to optimize the performance of the 35mm full-frame image sensor. With a top speed of 1/8000 second, it allows you to open up the aperture, even in bright locations, and take full advantage of the bokeh (defocus) effect created by the large image sensor. It also provides a flash synchronization speed of 1/200 second. Symbolizing the K-1’s field camera concept, this unit is designed to be compact and lightweight, with a well-balanced combination of high-precision operation and outstanding durability.
The K-1 provides high-speed continuous shooting at a top speed of approximately 4.4 images per second (at CH setting). You can also switch instantly to an optional speed setting of three images per second (CM) or 0.7 images per second (CL) using the main menu or Smart Function. In the APS-C Crop mode, the drive speed can be boosted to as high as approximately 6.5 images per second to assure quick response to fast-moving subjects.
Thanks to its large-capacity buffer memory, the K-1 lets you record a large number of images during continuous shooting: approximately 70 JPEG images (or approximately 17 RAW images) at CH setting; approximately 100 JPEG images (or approximately 20 RAW images) at CM setting, or approximately 100 JPEG images (or approximately 100 RAW images) at CL setting.*
In the Program (P) mode, the K-1 features the PENTAX-developed Hyper Program mode, which allows you to set a desired shutter or aperture speed using the front and rear e-dials, while retaining a proper exposure level. This eliminates the need for turning the model dial when switching to the Tv or Av mode.
In the Hyper Manual (M) mode, one push of the green button instantly sets the same aperture and shutter-speed settings as those of the P mode for proper exposure. Then, you can adjust the exposure to a desired level using the front and rear e-dials. With the AE-lock function, you can even shift aperture and/or shutter-speed settings while retaining the initial exposure level.
The combination of aperture and shutter speed can be changed without affecting the memorized exposure value.
When you set the Smart Function to the ISO mode, you can enjoy more flexible control of the three primary exposure parameters — aperture, shutter speed and ISO sensitivity — in both the P and M modes, using a combination of the front and rear e-dials and the setting dial.
