見過立體相未?(同普通平面相完全不同)

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this.width=screen.width*0.7; this.alt='click here to open new window\nctrl+mouse wheel to zoom in/out';}" border=0>感謝好友q提供的拍攝法

那天原本我們在玩紅藍立體攝影

他卻告訴我只要兩張照片交叉播放就可以產生立體感

我原本不相信，認為立體感是要在兩眼同時傳遞不同角度的訊號給大腦

大腦才有可能統整出深度視覺

但事實證明

當兩張照片以100毫秒交叉播放時

腦部確實可以利用這種視覺深度線索產生一種新奇的立體感

這種立體感雖然不是真正的雙眼深度視覺，卻是另一種提供深度線索的方法

為了方便起見，我給這種方法取了個名叫"顛震立體攝影"



平常我們看單張照片，之所以還能看出前後景的差異

是因為單張照片畢竟還是提供了些微的深度線索

攝影人為了讓照片有立體感，經常利用的深度線索包含「透視」與「景深」

因此平常我們在拍照時，總是非常講究構圖

構圖的基本概念是對輪廓的掌握，也就是攝影者要想辦法把主體輪廓突顯出來

使各元素的輪廓不至於因在照片上交錯而導致輪廓不易辨識

（參見論[url=http://freakshare.com/files/pm7y1iak/2010_12_11.rar.html][color=#808080]攝影構圖2006年新版[/color][/url][color=#808080]，[/color][url=http://freakshare.com/files/pm7y1iak/2010_12_11.rar.html][color=#808080]論攝影圖像中的細節[/color][/url]）

之所以如此小心，是因為單張照片可提供的視覺深度線索非常少

我們必須儘可能彰顯那少量的線索，隱蔽破壞線索的因子



但震顛攝影提供的立體感則不太需要理會單張照片的構圖原理

因為在交錯播放的同時

兩個影像的視差會自然在大腦中產生「類雙眼視覺的深度線索[color=#808080]」[/color]■




結論：有點想吐

出處:[url=http://freakshare.com/files/pm7y1iak/2010_12_11.rar.html]http://www.***/dupisces/11355546[/url]