Quote:
Originally Posted by robski
Another thing to consider here is if your are "Assigning" a colour space or "Converting" to a colour space.
The assign just embeds a profile or changes a header tag in the file. It does not touch the image data so profiles can be changed with no ill effect.
Convert does affect the image data.
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Do you know why you would want to change the profile using the Assign command?
I cannot see an obvious reason, though I suppose it could be useful if disk space is at a premium, and there are huge numbers of small images. Save the image without the profile. Then attach the profile after opening the image at a later date.
Although 'Convert' does change the image data, it does not change the image. It merely changes the representation of the image. (That is not quite true as there will be a tiny change due to limits in the accuracy of the colour space and bit depth, and conversion errors due to rounding.) So if you convert from Adobe RGB to sRGB, the image should look the same before and after assuming a viewer that recognises profiles and that the entire image lies within the sRGB gamut. Of course the image data does change, so opening each image in a viewer that does not recognise colour space profiles will give different results.