個人認為: FS"Ja`>j~ TV distortion一般會小於2%且屬於負畸變,那光學畸變當然有正有負,以照相機來說2~3%人眼還可以接受,如果超過5%人眼就會察覺~~~一點淺見
文天祥
2005-09-15 00:49
再補充說明: 6/;YS[jX 在規格書上看到的TV distortion是傳送到螢幕的變形量。
xiaoniu
2005-09-15 17:19
distortion与TV distortion有一定的关联吧!?
puxinghai
2005-11-07 15:08
应该是畸变的一种,只是专门针对TV的,对TV有一个指标而已
puxinghai
2005-11-07 15:09
也就是说你要将畸变控制在一个范围以内
davidchao61
2005-11-30 18:09
Optical distortion是所計算絕對的值, .w4|$.H TV distortion是在sreen上所的得到的相對值,只care max 及 min的差異, XGZZKvp 因為數碼容易調整。 `ulQ C TV distortion與optical distortion會依不同視場定義不同。
转一个光学设计论坛里的帖子 ydD:6bBX _
(b4|hJ' 在光学设计中有人经常碰到这样的问题,光学镜头的指标中有两项对于畸变的要求 qo9&e~Y<G 1N),k5I 一个是DISTORTION,另一个是TV DISTORTION ;R
>>,&g jYU0zGpj 其中的TV 畸变很多人不知道它的含义,再此给大家提供以下信息供参考,看了之后TV 畸变的概念就很清楚了 eZ)
|m a/E(GQ,, oi Q3E h(2{+Y+ What is distortion? <!dZ=9^^1 Distortion is the ratio of the change between the center and edge areas of a captured image. Due to the aberration of the lens, the distortion is more noticeable at the edges of a captured image. There are two types of distortion: barrel distortion and pincushion distortion. The general rule is that when the absolute value of the distortion value is smaller, the lens offers higher accuracy. W[QgddR fCa
lR7! Calculating formula R]od/u/$ TV distortion (Dtv) = Δh/2h x 100 (%) +4t
\j<T A positive value of TV distortion indicates }Bh\N5G% pincushion distortion and a negative value hpOY&7QUTD indicates barrel distortion. i_L u \R&ZWJKh 原帖网址:http://www.opto-tech.com/read.php?tid-3086.html J{Ij }0R"ZPU1Rw