After reading some glowing reviews of vintage Manon binoculars on Cloudynights, I went and bought a pair of 10x50 5.5° ... they arrived today, and are indeed beautiful. It's such a delight to hold that history in one's hand and look out at the world through that classic glass.
But of course there's a reason why I shouldn't have nice things....
So as I was trying to see how close they could focus, I turned the focus dial so much that the center screw and eyepiece apparatus just unscrewed right out. (Apologies if I'm not using the right terms ... I know next to nothing about binoculars!) I screwed them back in, but it didn't seem right, and I promptly spent the next two hours fiddling with them.
Either too much of the center screw seemed visible or else I overcompensated and ended up with too much of a gap underneath the focus dial, which seemed like a surefire way of getting dust and gunk down into the center screw housing.
Finally, with a sense of dread that this marvelous object had survived for decades only to have the misfortune of ending up in my clumsy hands, I stopped. Attached is a picture of what they now look like with the focus at infinity. That center screw/eyepiece still doesn't set flush all the way down into the depression below it.
Did I do something wrong? Should I just send them for maintenance to someone with expertise?