From: "Lasse Karlsson" <[EMAIL PROTECTED]>
From: "Shel Belinkoff" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Saturday, November 13, 2004 5:10 PM Subject: Re: Reducing File Size with Photoshop
We had a discussion about this some time ago, and a couple of people (John
Francis comes to mind as one) suggested that this is not always the case,
and that degradation of image quality takes place only in certain
circumstances. My recollection is that if a JPEG has not been changed, but
just opened for vieweing and then saved, there is no image degradation.
Each time you save as jpeg, a further compression, and consequently a degradation of image quality, will take place.
However if you only close it, there is nothing that will affect the quality of the image that you opened.
Not necesseraly - Some software take due note that the jpeg is unchanged and copy the bitstream of the original jpeg on saving.
Sam
