A camera and method for extending depth of field

Abstract

The invention discloses a camera and a depth of field expanding method. The distance between a lens and a light sensing chip is decided by the distance between the lens and an object, or the distance between the lens and the light sensing chip can be adjusted along with the distance between the lens and the object, so that a close-shot image, a long-shot image and an image of a shot main body can be obtained according to the distance between the lens and the light sensing chip, and the close-shot image, the long-shot image and the image of the shot main body can be obtained via shooting at one step. The close-shot image is a close-shot clear and long-shot fuzzy image, the long-shot image is a long-shot clear and close-shot fuzzy image, and the image of the shot main body is a clearest image of the shot main body between the long-shot image and the close-shot image. Through combination of the close-shot image, the long-shot image and the image of the shot main body, an image in which the close-shot image, the long-shot image and the image of the shot main body are clearest can be obtained, or an image in which the shot main body and the vicinity of the shot main body are clear while other parts are fuzzy is realized, and ultra-long depth-of-field or ultra-short depth-of-field shooting is realized.

Description

technical field [0001] The invention relates to the technical field of cameras, and more specifically, to a camera and a method for expanding the depth of field. Background technique [0002] With the development of society, users have higher and higher requirements for the quality of pictures taken by cameras. In order to meet the high quality requirements of users for photographic pictures, the pixels of cameras have gradually increased, and the aperture of lenses has become larger and larger. However, with the high The emergence of pixels and large-aperture cameras has led to narrower and narrower depth of field for objects, especially when shooting close-ups. Cameras with large apertures cannot achieve ultra-long depth-of-field photography. The sharpness is much lower than that of objects in the foreground, or in the case of high-definition objects in the foreground, the sharpness of objects in the foreground is much smaller than that of objects in the foreground, that i...

AI Technical Summary

Problems solved by technology

[0002] With the development of society, users have higher and higher requirements for the quality of pictures taken by cameras. In order to meet the high quality requirements of users for photographic pictures, the pixels of cameras have gradually increased, and the aperture of lenses has become larger and larger. However, with the high The emergence of pixels and large-aperture cameras has led to narrower and narrower depth of field for objects, especially when shooting close-ups. Cameras with large apertures cannot achieve ultra-long depth-of-field photography. The sharpness is much lower than that of objects in the foreground, or in the case of high-definition objects in the foreground, the sharpness of objects in the foreground is much smaller than that of objects in the foreground, that is, the photos taken in the case of close-up and long-range cannot be clear at the same time, and It is impossible to achieve an ultra-short depth-of-field image where only the subject is clear and other distances are blurred

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