Makers of various pods actually don't hide the resolution of the sensors in their products.
Rafael litening claims theirs is 1024*1024
LM sniper claims theirs is double the resolution of late lantrin models.
Lantrin II had 512*512
Aselsan's aselpod tops out at 768*576.
Thales Damocles is allegedly (by defence industry daily claim) 640*480
Basically, resolution isn't really the key charateristic of the sensors in targeting pods. They're usually behind the standard of commercial products by a few generations when it comes to pure resolution. Of course, in other regards they are much more capable.