個人認為: |R'i:= 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: 4
10:%WGc 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, uiK:*[ TV distortion是在sreen上所的得到的相對值,只care max 及 min的差異, >i8~dEbB 因為數碼容易調整。 #^\}xn"[ 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 T Xl\hL\+ />!!ch 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 Hc
/wta `^f}$R| 一个是DISTORTION,另一个是TV DISTORTION ;;6\q!7` {"\q(R0 其中的TV 畸变很多人不知道它的含义,再此给大家提供以下信息供参考,看了之后TV 畸变的概念就很清楚了 &}|0CR.( (>r|j4$ 5EfY9}dl 67,3i~ What is distortion? Obg@YIwn 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. K5+!(5V~ SZI7M"gf/+ Calculating formula \)s3b/oap TV distortion (Dtv) = Δh/2h x 100 (%) e
Ri!\Fx A positive value of TV distortion indicates ,FS?"Ni pincushion distortion and a negative value F94V 5_[ indicates barrel distortion. U!_sh< $;ch82UiX 原帖网址:http://www.opto-tech.com/read.php?tid-3086.html {!g?d<* mf#fA2[