schmism
Super Member
The strength and size is mostly what's confusing as well as the quality of the internals. .
8x30 - 8x maginification, 30mm objective (large lens on the front end)
7x50 7x mag 50mm objective
10x50 10xmag 50mm
for porch watching you may want to look at a spotting scope. They generally feature zoom mag like 15-30x while having a large objective 50mm to 80mm are common. The upside is you can put it on a trypod and not have to hold it.