Embed ColorSync profile, how to get back to original color profile?

I am a bit shocked , experienced today that iPhoto by default embed ColorSync profile (found under general- advanced settings for iPhoto) to every photo imported.
I always believed (and trusted) iphoto did not change the original file from the memory card. I have compared today the file from the memory card and the one found under originals in iPhoto library and see now that iphoto darken the shadows area a bit, in my eyes not a good thing.
So my question is , is the process done by iPhoto reversible? Can I get back the original profile (sRGB I believe) for my photos?

iPhoto by default embed ColorSync profile (found under general- advanced settings for iPhoto) to every photo imported.
Well let's get past the shock for you. It doesn't.
If the photo has a pre-existing color profile then the file is not touched. iPhoto uses the one already embedded. It only adds a profile if 1: there is none present and 2. If you check the box.
The profile attached is virtually indistinguishable from sRGB, just adapted slightly for Apple monitors.
Search the Help for ColorSync. This explains it quite clearly.
Regards
TD

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