I've done zooming in, it's awesome, most of the time I can't even control it, my brain just does all the work
I've never done black and white but I've tried sepia and pixelated which were awesome, but negative didn't work too well.
Then for upside-down, let me say this - it is a battle you do not want to start. You can try but as soon as you lose focus you mind will shift it right back to normal. It feels like when you try to balance something on a really thin edge and it keeps either falling forward or backwards, that is what this is like. As soon as you have your vision upside down it kind of bounces back or your body turns to suit the vision etc.