[m463]

I think the originals and edits are both there.

I don't know about space-optimized storage on-phone. I know one setting for transfer to mac or pc - I have it set to "keep originals" instead of "automatic". There might be other settings I'm not aware of.

EDIT: actually, there are other directories (under /mnt but outside DCIM in my example) that seem to have other photo stuff, maybe edits? ymmv