Reduction of an image's brightness or saturation toward the periphery compared to the image center
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A vignette is often added to an image to draw interest to the center and to frame the center portion of the photo.Vignetting is a common feature of photographs produced by toy cameras such as this shot taken with a Holga.This example shows both vignetting and restricted field of view (FOV). Here a "point-and-shoot camera" is used together with a microscope to create this image. Pronounced vignetting (fall off in brightness towards the edge) is visible as the optical system is not well adapted. A further circular restriction of the FOV is visible (the black area in the image).
In photography and optics, vignetting (/vɪnˈjɛtŋ/; vin-YET-ing) is a reduction of an image's brightness or saturation toward the periphery compared to the image center. The word vignette, from the same root as vine, originally referred to a decorative border in a book. Later, the word came to be used for a photographic portrait that is clear at the center and fades off toward the edges. A similar effect is visible in photographs of projected images or videos off a projection screen, resulting in a so-called "hotspot" effect.
Vignetting is often an unintended and undesired effect caused by camera settings or lens limitations. However, it is sometimes deliberately introduced for creative effect, such as to draw attention to the center of the frame. A photographer may deliberately choose a lens that is known to produce vignetting to obtain the effect, or it may be introduced with the use of special filters or post-processing procedures.
When using zoom lenses, vignetting may occur all along the zoom range, depending on the aperture and the focal length. However, it may not always be visible, except at the widest end (the shortest focal length). In these cases, vignetting may cause an exposure value (EV) difference of up to 3EV.[1]
^"Canon EF 24-70 mm f/2.8L II USM review - Vignetting". LensTip.com. 29 November 2012. Retrieved 21 April 2023.
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