For finding the best way to present photos you can look at a museum. In art, the presentation usually is neutral, so the attention on the piece is not distracted from the surroundings.
If you ask me, the best way to present photos in a computer is to place the pictures full screen in a neutral background. Fade to black between them will help to separate an image from the next. But you can use cuts.
Of course, movement, music and transitions are nice, but only when you are trying to create an experience for the presentation, transforming it in a piece by itself.
I hope this helps
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