porphyra parent
Hmm, the binoculars cost $800. For that amount, you could buy a budget APS-C or micro four thirds body with IBIS and pair it with a vintage telephoto prime if you wanted to do some image-stabilized photography. Obviously, this combo would be less portable and less suitable for just looking at stuff.
Honestly, you probably don’t even need a vintage lens. If you look for a deal the Panasonic 100-300mm lens if fairly affordable and very stable with sync is.
Having shot extensively with this lens on an Olympus OM-D camera with IBIS, I can confirm this is a great option.
It’s an incredible kit for the size and price.