Granite pebble stone from Merced river in Yosemite

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tpollina

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By using the magnet tapped to the camera of my phone to connect only the lens module of the foldscope, I enabled a way to image the surface of the pebbles. Interestingly, I have seen some very fragile while structure.
By breaking the pebbles, we can see an incredible difference outside/inside in terms of color and texture. So many shining white and black micas.
I wish I could have an app on my phone to take a stack in order to image in focus such “microscape”. Any tricks for achieving that ?

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