http://chinese.engadget.com/2008/09/02/eye-brain-and-photo/ Engadget 中文版 Comments for 癮科學：眼、腦與照相 http://chinese.engadget.com/media/feedlogo.gif http://chinese.engadget.com en-us Copyright 2009 Weblogs, Inc. The contents of this feed are available for non-commercial use only. Blogsmith http://www.blogsmith.com/http://chinese.engadget.com/2008/09/02/eye-brain-and-photo/http://chinese.engadget.com/2008/09/02/eye-brain-and-photo/Sep 2nd 2008 8:50PMhttp://chinese.engadget.com/2008/09/02/eye-brain-and-photo/http://chinese.engadget.com/2008/09/02/eye-brain-and-photo/人眼會自動將很多「格」的畫面疊加，來增強夜視能力。 "

這和相機的拉長曝光時間，不是有異曲同工之妙嗎?]]>Sep 2nd 2008 10:07PMhttp://chinese.engadget.com/2008/09/02/eye-brain-and-photo/http://chinese.engadget.com/2008/09/02/eye-brain-and-photo/相機只能老實的記錄相機拍到的東西～但是人的大腦可以為把腦袋裡想的東西加在你看到的東西
想想看“雷射投射“吧～人類的大腦可是一步步停運作的超級電腦（約1KHz 數百萬顆多核心單晶片）～
～我曾經聽過一句話～“你看到的是大腦以為你看到的東西“～]]>Sep 3rd 2008 6:44AMhttp://chinese.engadget.com/2008/09/02/eye-brain-and-photo/http://chinese.engadget.com/2008/09/02/eye-brain-and-photo/Sep 2nd 2008 10:28PMhttp://chinese.engadget.com/2008/09/02/eye-brain-and-photo/http://chinese.engadget.com/2008/09/02/eye-brain-and-photo/Sep 2nd 2008 11:13PMhttp://chinese.engadget.com/2008/09/02/eye-brain-and-photo/http://chinese.engadget.com/2008/09/02/eye-brain-and-photo/當光線強的時候, 瞳孔必須縮小, 減少進光量, 才能看清楚景象, 反之, 光線弱時, 則必須放大瞳孔, 增加進光量, 才能看清楚.
也就等於是一台固定快門的相機, 如果要正常曝光, 必須靠調整光圈大小, 才辦得到, 所以當光線超過光圈的極限時, 就無法看清楚影像了.
光線過強時, 鏡頭就加濾鏡, 或加遮光罩, 相當於帶太陽眼鏡或瞇瞇眼; 但是光線過弱時, 相機是可以藉由延長曝光時間或提高ISO值來補償, 人眼就沒辦法了, 一般人所謂在黑夜看久了也能看清楚, 是因為瞳孔瞬間縮放必須有一定的時間, 並不是延長曝光.
原則上人眼的感光度應該也是固定的.]]>Sep 3rd 2008 12:33AMhttp://chinese.engadget.com/2008/09/02/eye-brain-and-photo/http://chinese.engadget.com/2008/09/02/eye-brain-and-photo/
因為人眼的感光度除了瞳孔控制外，當長時間(10~20分鐘)處於黑暗的狀況下，會增加感光度，讓夜間的視力增加。]]>Sep 3rd 2008 2:00AMhttp://chinese.engadget.com/2008/09/02/eye-brain-and-photo/http://chinese.engadget.com/2008/09/02/eye-brain-and-photo/Sep 4th 2008 3:55PM