個人認為: $4V ~hI4 TV distortion一般會小於2%且屬於負畸變,那光學畸變當然有正有負,以照相機來說2~3%人眼還可以接受,如果超過5%人眼就會察覺~~~一點淺見
文天祥
2005-09-15 00:49
再補充說明: q_8qowu" 在規格書上看到的TV distortion是傳送到螢幕的變形量。
xiaoniu
2005-09-15 17:19
distortion与TV distortion有一定的关联吧!?
puxinghai
2005-11-07 15:08
应该是畸变的一种,只是专门针对TV的,对TV有一个指标而已
puxinghai
2005-11-07 15:09
也就是说你要将畸变控制在一个范围以内
davidchao61
2005-11-30 18:09
Optical distortion是所計算絕對的值, j0sR]i TV distortion是在sreen上所的得到的相對值,只care max 及 min的差異, /^v4[] 因為數碼容易調整。 P%smX`v TV distortion與optical distortion會依不同視場定義不同。
转一个光学设计论坛里的帖子 vK#xA+W W;IvR 在光学设计中有人经常碰到这样的问题,光学镜头的指标中有两项对于畸变的要求 V
)1SZt@x M&@9B)|= 一个是DISTORTION,另一个是TV DISTORTION .he%a3e Yk<?HNf 其中的TV 畸变很多人不知道它的含义,再此给大家提供以下信息供参考,看了之后TV 畸变的概念就很清楚了 ^l_W9s yXrFH@3 s<z{ (a |!I# T What is distortion? `EU=u_N Distortion is the ratio of the change between the center and edge areas of a captured image. Due to the aberration of the lens, the distortion is more noticeable at the edges of a captured image. There are two types of distortion: barrel distortion and pincushion distortion. The general rule is that when the absolute value of the distortion value is smaller, the lens offers higher accuracy. S! ,.#e (Y \8Fe56 Calculating formula H*yX
Iq: TV distortion (Dtv) = Δh/2h x 100 (%) j4H,*fc A positive value of TV distortion indicates v"_hWJ) pincushion distortion and a negative value d'^jekh indicates barrel distortion. rN$_(%m_N kHX- AsRc 原帖网址:http://www.opto-tech.com/read.php?tid-3086.html X,x{! T\8|Q@