No, it isn't interpolated upwards. It is just uncompressed. The whole idea of jpeg compression is for images to take up less space on your hard drive.
Len * There's no place like 127.0.0.1 > -----Original Message----- > From: Shel Belinkoff [mailto:[EMAIL PROTECTED] > Sent: Saturday, December 06, 2003 3:49 PM > To: PDML > Subject: JPEG to TIFF or PSD Conversion > > > Hi gang, > > When converting a JPEG file to PSD format, the size grows > considerably. > For example, a 1.5mb file from my digicam becomes almost 10mb > in size. > I don't object to that, but was just wondering about the mechanics of > how that happens within PS. > Anybody know? Is it interpolated upwards, or perhaps the > information is > already somewhere in the JPEG file? I believe it also happens when > converting a JPEG to a TIFF. Is that done in the same manner as the > conversion to PSD? > > Now, the real question is this: is any information lost or created in > such conversions that it degrades the image making it better > to shoot in > TIFF format, or is the image information only improved and > not harmed in > any way by making the change? > > shel >
