Planck's Pixel Limit

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."