個人認為: L L7a20 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: KCGs*kp> 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, eOt T* TV distortion是在sreen上所的得到的相對值,只care max 及 min的差異, )**k3u
t4 因為數碼容易調整。 HIcx "y 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 1 b+B (k"|k 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 0I* ^VGZ A0# K@ 一个是DISTORTION,另一个是TV DISTORTION :!;BOCTYI 0PE $n 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 9Xmb_@7b} L,of@> fw ._ cpz}!D What is distortion? i)Vqvb0Q 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. )fP,F( 4NUCLr7Y Calculating formula TKvUBy TV distortion (Dtv) = Δh/2h x 100 (%) |jJC~/WR A positive value of TV distortion indicates r.**
z j pincushion distortion and a negative value HuBG?4Qd indicates barrel distortion. Na=9ju 6*cm 原帖网址:http://www.opto-tech.com/read.php?tid-3086.html 3}= .7qm u{"o*udU