本文介紹PS實現Instagram中的Sierra濾鏡，內容如下： 先看下效果圖：  下面是具體實現步驟： 1.?To?replicate?the?faded?look?of?Sierra,?adjust?the?Curves?of?the?photo?with?Command?/?Ctrl?+?M,?or?Image?>?Adjustments?>?Curves.?Move?the?left?point?of?the?curve?directly?up?the?y-axis.  2.?Adjust?the?levels?with?Command?/?Ctrl?+?L,?or?Image?>?Adjustments?>?Levels.?Select?"Red"?in?the?"Channel"?dropdown?menu?and?increase?the?Output?Levels?to?21?by?moving?the?left?slider?toward?the?center.  [](http://mashable.com/2013/10/20/photoshop-instagram-filters/)[](http://mashable.com/2013/10/20/photoshop-instagram-filters/)[](http://mashable.com/2013/10/20/photoshop-instagram-filters/)3.?Increase?the?Contrast?by?going?to?Image?>?Adjustments?>?Brightness/Contrast.  4.?Adjust?the?channels?by?going?to?Image?>?Adjustments?>?Channel?Mixer.?Select?"Green"?in?the?"Output?Channel"?dropdown?menu?and?move?the?Green?slider?to?the?right,?giving?the?photo?less?of?a?green?tint.  [](http://mashable.com/2013/10/20/photoshop-instagram-filters/)[](http://mashable.com/2013/10/20/photoshop-instagram-filters/)[](http://mashable.com/2013/10/20/photoshop-instagram-filters/)5.?Save?the?image?as?is?and?reopen?it?in?Camera?Raw?to?add?a?vignette?frame.?You?can?do?this?by?exiting?out?of?the?current?window,?then?going?to?File?>?Open.?Select?the?correct?file,?then?select?"Camera?Raw"?in?the?"Format"?dropdown?menu. 6.?Once?you?have?the?file?open?in?Camera?Raw,?select?the?Effects?menu?on?the?right-hand?side?of?the?editor.?Make?sure?that?"Highlight?Priority"?is?selected?in?the?"Style"?dropdown?menu.?Move?the?"Amount"?slider?left?to?make?a?black?vignette?around?the?edges?of?the?photo.?Click?"Save?Image"?to?save?the?final?result.  **以上就是整個實現過程，如果大家需要用程序實現上述過程，可以使用ZPhotoEngine庫來輕松實現，下載地址為**：[點擊打開鏈接](http://www.zealpixel.com/portal.php?mod=list&catid=14)