8mp vs 3mp image comparison

I've got 4096 on the 8mp camera with 265 (non +). Had evaluated that vs 8192 for a couple days and couldn't tell a difference, so went with the lower. The 3mp camera is set at 3072 264 (non +).
Thanks, Eric

The difference is there, test both at your 800x digital magnification. 4096 is painfully low for 8MP. And recommend h.264.
H.265 logically adds compression and most here have found it provides little real world savings.