The phrase "photo playback" has about 35k Google hits, especially in production descriptions, but is it correct English?
It seems that “playback” can be used with video and audio, because we can play a video or play a record, cassette, CD, etc. However, we cannot “play” a photo, and therefore cannot play JPEG etc.
If “photo playback” is incorrect as a description of the function, what expression would be better?

