jpeg Image Files not visible

[Joe Brillhart]

This problem seems to be hinted at in some of the archives but 
specifically I could not find a reference on the list or in the 
Revolution Help. Perhaps this is something everyone knows already and 
if so, I apologize.

I had produced some logo artwork in Illustrator CS on the Mac and then 
imported the same artwork into Photoshop CS, did some additional 
tweaking, and finally saved some copies of the artwork as jpeg files. 
Over the next couple of weeks, I used these same jpegs in various 
applications on both the Mac platform and Win XP. (Powerpoint, Word, 
etc). Nothing seemed amiss.

Last week I began to put together a Revolution Stack and tried to 
import one of these jpegs. I used Import As Control/image File. To my 
surprise, the image was not visible, although the stack inspector 
showed it being there.  This was on the Mac running the latest version 
of Panther. I tried copying and pasting. Same results. Finally I tried 
importing the file as as a Quicktime referenced object and it appeared 
although it was sort of iridescent. Not exactly a color match but a 
rather cool effect. I tried the same exercise on Windows XP and got 
nearly the same result except the cool iridescence had turned into a 
really bad color rendition with gradient banding.

I randomly began trying to import jpegs into Revolution. Most worked as 
advertised. Some didn't. I began to think the problem might be related 
to Photoshop CS (vs. 8), but proved that not to be the case. Finally I 
looked at the color mode of the jpegs in Photoshop. All the ones that 
did not import correctly (were invisible) were in CMYK color. If you 
export from Illustrator into Photoshop, most likely the images will 
default to this mode. Photoshop saves them in the same mode and most 
applications play nicely with them I suppose by converting them on the 
fly to RGB.

To fix the problem I changed the mode of the jpeg  logos in Photoshop 
to RGB and presto, everything worked again with the color rendition 
correct.

Hope this solves some others problems.

Joe Brillhart