The TVTropes Trope Finder is where you can come to ask questions like "Do we have this one?" and "What's the trope about...?" Trying to rediscover a long lost show or other medium but need a little help? Head to Media Finder and try your luck there. Want to propose a new trope? You should be over at the Trope Launch Pad.
Seconding Photo Montage, which is not about memories, just using photos or photo-like stillframe sequences like the one linked.
It also shows an overlap of Slow-Motion Pass-By, a Multi-Take Cut, Aspect Ratio Switch, and Staggered Zoom, and the sudden pseudo-media shift is an example of Painting the Medium
The camera sound doubles as a Sting
Edited by Scorpion451Because we have those tropes. See The Same, but More Specific.
You're still free to propose it over in the launchpad if you have the examples and can establish a pattern of meaning that's more than just the sum of the existing tropes

I saw this trope where in a moment, there's some sort of slideshow accompanied by camera clicks and flashes. I've seen this trope a lot, so if you could help me with this, it would be appreciated!