TS-Optics 20x80 ED APO Triplet Binoculars - with Nebula Filters

[Woking]

Anybody tried these or similar?

Interesting concept with the swivel in filters, but are there any drawback with this.

[EntropyTango]

Hi, they can work well assuming you have enough back focus

I prefer them to filter wheels which usually need even more back focus

And its easy to tell what filter you have loaded, as opposed to...position 3...mmmm...

What did I do last week?

I guess lastly they are also cheaper than filter wheels (generally)