On 2012-11-30 21:41:04 -0800, "Gary Eickmeier" said:


"nospam" wrote in message
...
In article , Gary Eickmeier
wrote:

One major advantage of RAW, in addition to the previously mentioned
ones,
is that you can easily edit the RAW image, non-destructively.

You can edit anything non-destructively. Keep trying.

except that jpeg is already destructive.

you can edit non-destructively from that point on, but you can't undo
what was done to make the jpeg.

Interesting you said that - I stumbled upon a function of Elements that
sorta converted any JPG into a RAW file and allowed you to edit it the same
as any RAW image. Do you know what I mean?

Gary Eickmeier

You can bring a JPEG back into ACR and apply some ACR adjustments, but
not all, you should note that there are some areas of adjustment that
are not available to the already lossy 8-bit JPEG.
There is no way to convert the JPEG into a 16-bit RAW file and restore
missing information. If you believe that, you are ignorant of the
nature of the file types and the operation of ACR. Converting the JPEG
to a TIF can suspend the state of degradation, but information has
already been lost. You have not converted a JPEG into a RAW file.

--
Regards,

Savageduck