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Vignette

Visual special effect whereby viewers see images through a perceived keyhole, heart shape, diamond, etc.
vignette

In photography and optics, vignetting (/vɪnˈjɛtɪŋ/, UK also /vɪˈnɛt-/; French: vignette) 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 superzoom 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 0.75EV.

Key Terms

brightness
center
effect
focal length
image
optics
photography
reduction
uk
vignette

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Vignette
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Last modified on June 4 2019
Content adapted from Wikipedia
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