Are you looking at the compressed file size on disk, as reported by Windows Explorer, or are you looking at the expanded/decompressed image size in RAM, as reported by the Photoshop Image Size dialog?
Because those two will be very different, and around 6MB seems about right, for the size you mention, in the decompressed state. A PSD and a jpeg, both open in Photoshop, will be the same size. The jpeg compression doesn't kick in until you save it to disk. Then when you reopen it, it will be decompressed and back to "normal" size.
Thank you for your answer.
I'm looking at both actually.
An example :
- "Corrupt" file : A6 - 300dpi - CMYK > In Image size dialog : high 9.0MB - Low 7,1MB - Jpeg size on disk 7.506 MB
- New file ( with same layers ) - A6 - 300dpi - CMYK > In Image size dialog: high 3.9 MB - Low 1,9 MB - Jpeg size on disk 3.344MB
I also had this issue with banner size images 72 dpi,saved on disk with a size of 900Kb ( high quality ) that suddenly becomes 5Mb ( high or low quality ) on disk. Same Jpeg compression settings.
Jpeg size on disk 3.344MB
I'm sorry, but I'm not very familiar with numbers conventions in English...is that three thousand or three point 344?
Sorry it's 3MB
Is this the Ancestors Metadata issue?