2011-7-8 11:54
bennytkl
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.style.cursor='hand'; this.alt='click here to open new window\nctrl+mouse wheel to zoom in/out';}" onclick="if(!this.resized) {return true;} else {window.open(this.src);}" alt="" src="http://f7.wretch.yimg.com/dupisces/21/1711339655.jpg" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt='click here to open new window\nctrl+mouse wheel to zoom in/out';}" border=0>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor='hand'; this.alt='click here to open new window\nctrl+mouse wheel to zoom in/out';}" onclick="if(!this.resized) {return true;} else {window.open(this.src);}" alt="" src="http://f7.wretch.yimg.com/dupisces/21/o1711339651.jpg" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt='click here to open new window\nctrl+mouse wheel to zoom in/out';}" border=0>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor='hand'; this.alt='click here to open new window\nctrl+mouse wheel to zoom in/out';}" onclick="if(!this.resized) {return true;} else {window.open(this.src);}" alt="" src="http://f7.wretch.yimg.com/dupisces/21/o1711339659.jpg" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt='click here to open new window\nctrl+mouse wheel to zoom in/out';}" border=0>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor='hand'; this.alt='click here to open new window\nctrl+mouse wheel to zoom in/out';}" onclick="if(!this.resized) {return true;} else {window.open(this.src);}" alt="" src="http://f7.wretch.yimg.com/dupisces/21/o1711339650.jpg" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt='click here to open new window\nctrl+mouse wheel to zoom in/out';}" border=0>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor='hand'; this.alt='click here to open new window\nctrl+mouse wheel to zoom in/out';}" onclick="if(!this.resized) {return true;} else {window.open(this.src);}" alt="" src="http://f7.wretch.yimg.com/dupisces/21/o1711339649.jpg" onload="if(this.width>screen.width*0.7) {this.resized=true; 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]