On the internet , can now find early during the popular three - dimensional photographic many precious three - dimensional photos , with the general concept is the need to carry out three - dimensional films for viewing , but we can also use the binocular - as methods , and use around eyes were about to watch screen , it can screen directly in the middle produced two third piece of the illusion of three - dimensional images 在互聯(lián)網(wǎng)上,現(xiàn)在還能找到早期立體攝影盛行時(shí)期的許多珍貴的立體照片,這些照片一般是需要借助觀片器才能進(jìn)行立體觀賞,不過我們也可以利用雙眼平視的方法,用左右眼分別觀看左右畫面,就可以直接在兩幅畫面中間產(chǎn)生第三幅立體畫面的錯(cuò)覺。