https://purengom.com/2007/12/16/iphoto%ec%97%90%ec%84%9c-%ea%b4%80%eb%a6%ac%ed%95%98%eb%8a%94-%ec%82%ac%ec%a7%84%ec%9d%84%ec%99%b8%eb%b6%80-%ed%8e%b8%ec%a7%91%ea%b8%b0%ec%97%90%ec%84%9c-%ed%8e%b8%ec%a7%91%ed%95%98%eb%8a%94-%eb%b0%a9/