Abstract:
A phase difference AF processing unit (19) connects detection signals of phase difference detection pixels (52A) in an AF area (53), connects detection signals of phase difference detection pixels (52B) in the AF area (53), and performs a correlation operation with respect to detection signal groups after connection to generate a defocus amount when it is determined that a subject image formed in the AF area (53) includes a high frequency component. The phase difference AF processing unit (19) performs a correlation operation with respect to detection signal groups of phase difference detection pixels (52A, 52B) in each pair line in the AF area (53) to generate the defocus amount when it is determined that the subject image formed in the AF area (53) does not include a high frequency component.
Abstract:
The invention provides an imaging apparatus and a focus control method in which an optimal AF system can be selected in accordance with an environment in which an image of a photographic subject is taken, an imaging condition in which the image is taken, etc. so that the quality of the taken image can be improved. A system control portion 11 of the imaging apparatus selects and executes one from focus control based on a phase difference AF system and focus control based on a contrast AF system in accordance with the magnitude relation between a determination threshold set for an F-number and the set F-number in the case where an AF instruction has been issued. The system control portion 11 can vary the determination threshold in accordance with an exposure value in the case where the AF instruction has been issued.
Abstract:
An imaging device to which an imaging optical system is attachable, includes a correction data generating unit that generates correction data to correct a sensitivity difference of first phase difference detecting pixel cells and second phase difference detecting pixel cells; and a signal correcting unit that corrects at least one of an output signal of the first phase difference detecting pixel cells and an output signal of the second phase difference detecting pixel cells in accordance with the correction data, in which the correction data generating unit calculates two ratios to generate the correction data based on the two ratios.
Abstract:
One aspect of the present invention thinning-reads pixel signals from the multiple pixels according to a thinning pattern from an image pickup element, or extracts pixel signals from the multiple pixels according to the thinning pattern from a color image that is read from the image pickup element and corresponds to the color filter array, and acquires a thinned color image. Then, moving image data is generated on the basis of the thinned color image. Adoption of the thinned color image as a target image to be subjected to moving image processing can facilitate reduction in processing time per frame, and prevent the frame rate from decreasing. Furthermore, thinning-reading pixels from the image pickup element can facilitate reduction in time of reading an image from the image pickup element.
Abstract:
The present invention provides an imaging apparatus configured such that it is possible to check a long exposure subject image through a finder eye piece before actual imaging of long exposure imaging so as to recognize a subtle change in the tilt of the imaging apparatus caused when the apparatus gradually tilts over a long time period. In the imaging apparatus of the present invention, exposure control means 60 controls an exposure time of a live view image, which is acquired by the imaging device 20, such that the exposure time is the same as that in the actual imaging, whereby it is possible to check the live view image from an eyepiece lens 52 of a finder.
Abstract:
An image capturing apparatus includes: an image capturing element in which a plurality of pixels and phase difference pixels are formed within an effective pixel region; a photographing lens; a phase difference amount detecting unit analyzing a captured image signal and obtaining a phase difference amount from detection signals of two of the phase difference pixels that make a pair; and a control unit obtaining a defocus amount of a photographic subject image from the detected phase difference amount and performing a focusing control, in which the control unit obtains a parameter value regarding a ratio of the defocus amount and the phase difference amount based on photographing lens information of the photographing lens and a light receiving sensitivity distribution indicating sensitivity for each incident angle of incident light for the two of the phase difference pixels that make the pair, and obtains the defocus amount.
Abstract:
A solid-state image capture element includes a pixel, which receives light of one of a pair of light beams which pass through iris regions of different locations on a photographic lens, and a pixel which receives light of the other, in a pair of said pixels. The pair of pixels are positioned shifted from one another in a direction which intersects the x-axis which is the phase difference direction. The pair includes a plurality of first pairs and second pairs which respectively have mutually inverse location relations with respect to the pixels and the pixels therein. The first pair and the second pair are alternately positioned in either the phase difference detection direction or the direction which is orthogonal thereto.
Abstract:
An imaging device includes: an image acquisition unit configured to receive light fluxes passing through different regions in a single imaging optical system and acquire two images; a ghost detection unit configured to detect a ghost from the two acquired images; a first determination unit configured to determine whether the ghost is detected from any of the two acquired images; and a control unit configured to perform at least one of an automatic focus control, an automatic exposure control and an automatic white balance control based on an image for which it is not determined that the ghost is caused out of the two images in a case where the first determination unit determines that the ghost is detected from any of the two images.
Abstract:
An image pickup device includes: a color filter having repeatedly disposed basic array patterns configured with first and second array patterns disposed symmetrically about a point, wherein the first array pattern has a first filter placed at the 4 corner and center pixels of a 3×3 pixel square array, a second filter placed in a line at the horizontal direction center of the square array, and a third filter placed in a line at the vertical direction center of the square array, and the second array pattern has the same placement of the first filter as the first array pattern and has placement of the second filter and placement of the third filter swapped over to that of the first array pattern; and phase difference detection pixels placed at positions corresponding to the first filter at a top and bottom edge sides in the array pattern.
Abstract:
Interpolation precision of phase difference detection pixels is raised. An image pickup device includes: a color filter disposed with a repeating basic array pattern configured by 3×3 pixel square arrays of a first array pattern and a second array pattern disposed symmetrically about a point; a first phase difference detection pixel that is placed at a position of a pixel corresponding to 1 corner portion out of the 4 corner portions of at least one array pattern in 1 pair of the first array pattern and the second array pattern out of 2 pairs of the first array pattern and the second array pattern configuring the basic array pattern; and a second phase difference detection pixel that is placed at a position of a pixel corresponding to 1 corner portion out of the 4 corner portions in the array pattern, out of the first array pattern.