Maybe someone can answer this question.
Were all the other cameras on that shelf black and white ones? Because if they weren't, he could claim that he went right to the one that WAS. Something a professional photographer could spot right away.

I’m not a big fan of this ending either. It all played out too conveniently. Are there truly any clocks without any numbers or writing, not even a brand name? Any writing at all would show that the picture was reversed.