Rollei filter issue.

[Guest]

I have noticed play between the glass and the aluminum frame. Looked to see if the retaining ring had unscrewed but could not find one !!
Eyesight not at its once best but I see nothing seating the glass, what am I missing, a part or eyesight ?????

 

[x-ray]

You're not missing anything. That just the way they're made. I just looked at a coulee of mine and the glass freely floats in the mount. Not to worry.