6/18/2023 0 Comments Explain bokeh movie![]() Movie wide-screen lenses are very expensive and difficult to rent. With the efforts of the film industry to promote "widescreen" for many years, this has also become the criterion for whether the film has a "movie feel". The most well-known feature of the anamorphic lens is that it can achieve a horizontal widescreen effect after interpreting the material, which satisfies the viewing habits of the human eye. The picture effect of widescreen lens vs conventional spherical lens During the final playback (post-production), the image needs to be "decompressed" (stretched horizontally on the x-axis) to restore the normal effect.Ģ. When light passes through the anamorphic lens It produces an image that appears to be "squeezed" (squeezed vertically in the y-axis) when applied to the sensor. First, the basis of deformation is distortion, so a cylindrical lens (some of which are prisms, hereinafter collectively referred to as anamorphic lens) elements are added on the basis of the original spherical lens. The imaging of the widening lens is somewhat different from this. There are some lenses that use aspherical lenses, but their imaging effects are similar to those of spherical lenses, so they are out of the scope of our discussion for the time being. When light passes through a spherical lens Produces a "regular" image when it hits the sensor. Since the curved surface curve of its lens element is a part of a sphere, the spherical shape can ensure that the performance of light in all directions is the same. Generally speaking, a spherical lens is a conventional lens that we use for imaging every day. (Note: The following is an understanding definition, non-professional optical analysis) ![]() Press the content on the left and right sides of the screen to keep the top and bottom unchanged, and then use the convex lens to restore the screen when it is shown in the cinema, and you can get a wider screen than the TV.įirst briefly summarize what a spherical lens is. The English name of this type of lens is very uniform "Anamorphic", but the Chinese translation is full of strange things, "anamorphic lens", "widening lens", "anamorphic wide screen lens", and even "anamorphic wide ’ screen ’ lens".Īnamorphic wide-screen lenses were widely used by the American film industry in the 1950s in order to cope with the impact of the emerging TV industry and to widen the gap between home TV and large-screen viewing in theaters. First of all, I have to explain a point, which refers to "screen" rather than "screen". ![]()
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