Tnvc is what I was looking at as well. To mount it on my tripod.
My other option was to buy a cheap rail like utg/leapers/ monstrum and jb weld it to my tripod adapter. Maybe a zip tie as well. So ghetto!!!

had to be at least 1 inch high rail cause I was gonna slobber jb weld on the sides lol. Of course the bottom as well.
Ok so my reasoning was cause I was being cheap and didn't want to buy another spotting scope. My old scope rubber protective outing thing was melted, lens was dirty/ saw little fractures. It was my first spotting scope ever. It was a winchester 20-60x80 I think. I had (at the time) a couple scopes laying around doing nothing. So I was gonna put 1 of them, which was a 3-9x40 accupoint, on top. The tnvc seemed also kind of expensive for just a spotting scope adapter for kokohead only. Anyways, I sold my remaining scopes , and got vortex binos. 10x50 or maybe it was 12x50. I forget, but its in my range bag now. I'm only running red dots and 1x acogs now. So all I need is to be able to see at 50 yards. So I tested my binos and at bout 70 ish yards I can see Washington's face on a dollar bill. Figured it be good enough. And now that I dont have to lug a tripod and a foot long spotting scope my bag is lighter and I can carry more boxes of ammo when goin kokohead

If you wanna talk about clarity. Its basically like everything else. You get what you pay for.
Triji scopes/ acogs/ NF is prob the best ive ever used. I would also put steiner 1-4 in that range as well. Edges werent fishy eye like vortex.
I also had vxr leupys too and they were clear but maybe not as good as acogs.
Ive never tried zeiss I think, never owned 1 for sure. But I'm pretty sure their glass is suppose to be on par with leupys or acogs? At the price range I see them at, they better be.
Never shot with S and B , but looked through them at stores. Hell even sig Sauer glass seems pretty good too.
If you only have 2 scopes , 1 being zeiss , it will be hard to tell how good it is unless you have a junk scope to compare it to.