[kris_lck]

如題~~THX!!~~

[south_south]

一種無特別去壓縮的圖像格式....

[Philippe]

即相機的最原始模式,其他非原厰軟件可能看不到.而且檔案size非常大.真正輸出前要轉成標準jpeg格式.好處是後期處理寛容度較大.

[myidea]

是 image file format 的一種。 因為無壓縮﹐ so that, when open and save, 可以免去每次加壓 and 解壓的 steps. 快 and information lossless. 吾好處﹐ 是 comaper with JPG format, size 非常大。
Technically speaking, eveytime you open and save as JPG, some information is always loss, that's what we call "lossy transformation". Like making photocopy from another photocopy. In some situation, the loos could be very very small and not able to be noted. However, technically speaking, information cannot be 100% preserved, thru JPEG compress / de-compress.