aperture distortion的意思|示意

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Aperture distortion in English language is an effect caused by camera lenses. It is a kind of optical aberration where points on an image that ought to be associated with a straight line in the original scene become curved or skewed when the image is captured.

Aperture distortion results from a lens's inability to perfectly shape the light entering it. Light rays entering the edges of a lens, or area of a lens, are bent at steeper angles than light entering the center of the lens. This phenomenon is the reason why aperture distortion occurs when the lenses are not perfectly aligned.

Aperture distortion can take many forms. It can be pincushion shaped, which is when items that ought to be perfectly straight appear curved inward, like a pin cushion. It can also be barrel shaped, when items appear to be curved outward, like the side of a barrel.

The most common type of aperture distortion is known as rectilinear distortion. Rectilinear distortion happens when straight edges appear to be wobbly, bowed, or curved. This type of distortion is most common in wide angle lenses.

Aperture distortion can be corrected by changing the camera settings. For instance, one can increase the focal length, which is the distance from the centre of the image plane to the image sensor. Increasing the focal length reduces the field of view and also reduces the ill effects of the distortion.

Alternatively, a photographer can use software applications to help reduce the visibility of the distortion. Specialized \\"Distortion Correct\\" filters are available for this purpose. There are also a wide range of software packages designed to correct lens distortion.

In general, the way to minimize aperture distortion is to choose the right lens for the job. It is also important to be aware of the nature of the lenses before buying them, and to avoid lenses that have a tendency to produce this type of distortion.