https://crazykevin.com/2011/06/26/%e8%8f%b2%e6%9e%97%e7%85%a7%e7%89%87%e6%8e%83%e7%9e%84%e5%be%8c%e8%99%95%e7%90%86/
菲林照片掃瞄後處理