I got a pair of the 8 x 28 Diamondbacks for exactly this purpose. I had a pair of Nikon 8 by 20s or something, tiny little binoculars, they had terrible low light performance and was looking for something similar in size. The bulk of larger binoculars was a problem for me climbing tree stands a lot, so I really wanted sub compact size. The Diamondbacks are acceptable for this short range purpose, for me that’s just putting antlers on a deer at 50 yards before it can see me to know if it’s a shooter or not, but if you are at all picky about your glass they’re going to be terrible. Probably better than the little tiny Nikons in low light, but not by much. Low light performance is mediocre at best, and edge to edge clarity is noticeably bad. The center of the view is OK, they work, but they’re not going to impress anyone.Best I have found in a subcompact are the zeiss, I think the Terra ED? They are about $350, a little more than you wanna spend, and I do not like the double hinge in use, but in that price category I couldn’t find anything even close. I did not get a chance to look through the kowas or the mavens mentioned above though.
I am strongly considering just ditching the binoculars and using a better quality 6X rangefinder for this purpose. Kill two birds with one stone that way.