I have a large collection of pictures, some taken at the old museum, some of the same mosaics, but in the new museum. During my several visits (at least 6) almost each time light conditions had changed, and correcting for that is not always satisfactory, let alone getting the corrections the same for each picture of each mosaic. I disliked in particular how in the new museum led-spotlights were often used (a nasty development in many museums, not just in Turkey). I suppose they are efficient, but they give notable highlight spots that sometimes cannot be corrected for. I found they also vary in light temperature. Another annoyance is that in the new museum many mosaics are laid on a floor or a slightly raised platform, without offering a point of view from which to take a picture that, after maybe some perspective correction, looked natural. So in some cases I had to guess the amount of foreshortening that I had to correct.

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