Hello Jun48
Thank you for your answer and help.
I am using 10.7.2 version.
If i re generate previews, then thumbnails will indeed change and update and then look like (and remain like) the new redish version of my enlarged pictures !
I have done a little more investigating and I found that it has something to do with the color profile.
Also, before i get into more details, i have mistaken above when i said preview seemed ok and aperture not : preview is ok only for raw pictures, jpeg all appears red exactly like in aperture application when i visualize them.
I am no expert but somehow, since last updates, aperture or my mac does not support adobe 1998 anymore (or read it differently - is that possible?).
Every photo I have taken pre-lion with the color profile Adobe RGB has a color shift towards red. Raw seem ok but not jpeg.
When i look at pictures in the aperture library (by exploring content package, and then with preview tool), and then inspect the image, it seems to me the color profile is not recognised (it says "not calibrated" in the EXIF of the file). However, if i look at this image using aperture application, metada will read adobe 1998 (which is how my camera is calibrated). I dont understand why ? Is it possible the adobe 1998 only refers to my camera setting and somehow the file was not embedded properly or recognised on the comp ?
More testing : if i look at the masters photo in the aperture library content package (with the preview tool), and then decide to assign a new color profile to srvb, then the color comes back as it was in the past, with the proper tone. However it doesnt seem to properly embed it because nothing changes in the exif and when i close it it is back to before status and back to red. I guess one of the solution suggested in this thread (re embed everything in the library) would work but somehow i cannot find the menu the guy is talking about (my version is french, and i cant find this colosync scripts thing).
I still dont get why this all changed.
I had worked a lot on my pictures and now all those modifs appear red and the wrong way.
I have tried to import again the few pictures i still had left on my memory card in my camera.
They all come redish immediately when imported, not like before for the very same picture.
Should i shoot in sRB from now on ? Is it a big difference with adobe 1998 ? (i thought adobe 1998 recorded more colors). How to restore previous library in aperture with the modifs i had done before ?
I am so lost.
New to mac and aperture and soooo disappointed 😮
Help please.
Thanks,
Adrien.