why do images appear fine in media iPhoto file, but turn grayish or light blue put to timeline?

This is a stand alone system, used each year just for working on the school yearbook for publishing class, and the seniors create a slide show that lasts about 20 minutes of their years K-12 during the end of their graduation. We've done this for a number of years now, this one system. Its been fine...and I"ve made a few movies on the system myself.

I was teaching another class when a couple girls/seniors came and asked if I could come look. I can't remember the photos in the display from timeline ever looking different from first clicking on the image file in iPhoto from the media. Values, color etc.,remaining the same.

We are making regular DVD movies...burning to disc, using a DVD player and projector in our graduation program.

What I saw this afternoon, was more a tint of the original photo once it appeared on the timeline. By tint, I mean lighter, more pastel in color...a loss of value contrast and color saturation.

The students first enhance the images using photoshop on other systems, working as a small team...making them 8"x 10" in size at 150dpi...saved as jpg, files shared by a memory stick to the stand alone system, and imported into iPhoto. The operating system is a Tiger intel...10.4.6

Editing works for the students off their impression the image in the timeline gives...so, this is throwing them off. They tell me...the progress of making this began with the images looking normal. This is more a recent development, perhaps the last week or so.

I hope my description helps lead to some notion or idea. Thanks for your time...

much appreciated, thanks...

thanks, appreciate that...

I've made a number of dvds as an artist...which I actually market. I use Final Cut Studio...for the most part, but have done a few shorter videos with iMovie to have some upper hand with students, that is to help them, teach. But I've not encountered this before either.

Its been sometime, so memory or method escapes me...but is there a simple enough reset to default settings for iMovie that I could attempt? I teach visual arts, but also computer graphic arts and my experience with students with too many hands in the fire, is they often don't understand computers only do what they are told or instructed to do, and will remember who told it to do what when. Thanks...

at the level of these high school students...and changes to their requirements, they don't get visual arts long enough to advance to programs like Final Cut. Macs coming with iMovies makes it too convenient to stick with that.

they claim they burned what they had...tried looking at it the video on another system and it did not appear blue.

If I find the time, I need to log in under my name, start a simple movie to see what is going on. I suspect it will appear to be working normal for me, which will say some hand in the mix among students operated some command. In which case if there is a way to bring back the default settings, that would be good to know.

thanks...

Basic enhancements...auto color, auto levels etc.,

in some cases they might back a new image file...create a collage of student pics, two or three...flatten layers, save as a "jpeg" format file. All basic...

size I recommended, which has worked the past eight-ten years now for the graduation program, is 8"x 10" at 150 dpi...

basic RYG mode, 8 bits...

they then save them to a memory stick to transfer to the stand alone system, storing in iPhoto to be called up in iMovie.

sorry clicked "solved" by accident...

No...don't believe the students would have, as I've never taught that except in situations something might go to print. For most...that does not happen. But if I may asked...we have successfully produced roughly 14-20 videos over the past eight years with all images saved in RYB mode...why do you suppose this might now be a glitch?

always a learning curve, eh! thanks...