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晕影是几乎每个光学系统都会出现的成像现象,这种效果甚至可能会在后期中刻意加入。在这篇文章中,我们将探讨晕影的类型和成因,以便更好地预测并控制晕影效果。晕影类型概述在光线往画面的角落方向急遽变暗时,就会产生晕影现象,此外还有几个不同的根本成因:自然晕影:会在逐渐变黑的情形下发生,主要是由于光线从不同的角度冲击摄影机感光器的不同位置。这种晕影常见于广角镜头中。光学晕影:也是逐渐的,但主要是由镜头的特性和镜筒
Vignette is an imaging phenomenon that occurs with almost every optical system, and this effect may even be intentionally added later. In this article, we explore the types and causes of vignettes in order to better predict and control vignetting. Vignette Type Overview Vignetting occurs when light hurries in the corner of the screen, in addition to several different underlying causes: Natural Vignetting: Occurs in a gradually darkening environment, mostly due to Light from different angles impact the camera photoreceptor in different locations. This vignetting is common in wide-angle lenses. Optical Vignetting: It is also gradual, but mainly by the lens characteristics and lens barrel