Based upon an analog of Planck's Length, the Planck's Pixel Limit is the absolute "zoom" one can use to narrow down on/enlarge a photo before pixels become meaningless.
CSI-type show:
"Computer, enhance! Enhance! Computer, why can't you enhance any more, dammit?!"
"Special Agent X, it appears that this image has reached its Planck's Pixel Limit; there is no more information to show that makes sense in our universe."
A group of more than 3 physicists
I just a saw a planck working at our local Starbucks, they were quite angry at themselves.
The smallest unit of agression: An agression that only a single person in the entire world would be offended by.
What you are doing is a microagression! No mate, actually it is a planck agression, only you seem to give a shit.