Animated Sliding Protoype

While working on a new OS X application that relies heavily on photos we noticed that the default OS X resizing slider was a bit flawed and it wouldn't work well for us, the actual size is never displayed, so users have to constantly guess what's the actual size of the photos on the grid.

The animation was put together just to show the developers how I see this working, hope it inspires more developers as I believe this can be very useful. :)