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Focusing On Retina
Focusing may refer to: * Adjusting an optical system to minimize defocus aberration * Focusing (psychotherapy), a psychotherapeutic technique See also *Focus (other) {{dab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Defocus Aberration
In optics, defocus is the aberration in which an image is simply out of focus. This aberration is familiar to anyone who has used a camera, videocamera, microscope, telescope, or binoculars. Optically, defocus refers to a translation of the focus along the optical axis away from the detection surface. In general, defocus reduces the sharpness and contrast of the image. What should be sharp, high-contrast edges in a scene become gradual transitions. Fine detail in the scene is blurred or even becomes invisible. Nearly all image-forming optical devices incorporate some form of focus adjustment to minimize defocus and maximize image quality. In optics and photography The degree of image blurring for a given amount of focus shift depends inversely on the lens f-number. Low f-numbers, such as to 2.8, are very sensitive to defocus and have very shallow depths of focus. High f-numbers, in the 16 to 32 range, are highly tolerant of defocus, and consequently have large dep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Focusing (psychotherapy)
Focusing is an internally oriented psychotherapeutic process developed by psychotherapist Eugene Gendlin. It can be used in any kind of therapeutic situation, including peer-to-peer sessions. It involves holding a specific kind of open, non-judging attention to an internal knowing which is experienced but is not yet in words. Focusing can, among other things, be used to become clear on what one feels or wants, to obtain new insights about one's situation, and to stimulate change or healing of the situation. Focusing is set apart from other methods of inner awareness by three qualities: something called the "felt sense", a quality of engaged accepting attention, and a researched-based technique that facilitates change. Origin At the University of Chicago, beginning in 1953, Eugene Gendlin did 15 years of research analyzing what made psychotherapy either successful or unsuccessful. His conclusion was that it is not the therapist's technique that determines the success of psychotherapy, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |