Voigtländer 28mm Viewfinder glass element moved

[Ism71000]

Hi, so I have a Ricoh GR and when I bought it, I got this beautiful Voigtländer 28mm Viewfinder with it. It's great, I love it - but some glass element on the inside of it moved, and when I look through the viewfinder the corners are dark (See picture below)
I tried opening it up, but the only thing I seem to be able to remove, is the base that goes into the hot shoe.
So just asking if someone has any tips on how to fix this, or should I just send it to a pro?

Thanks in advance!

 

[Bill Blackwell]

Hope you find a fix for it; these 28mm CV finders are getting hard to find.

There is a retaining ring over the front element. I'd start by removing that.

 

[Ism71000]

Hope you find a fix for it; these 28mm CV finders are getting hard to find.


There is a retaining ring over the front element. I'd start by removing that.

Yeah, it's amazing - and I still don't understand why the seller included it with the GR (Which was already an amazing deal even without the viewfinder)
I'll give the retaining ring a try now, just trying to be as gentle as possible with it - thanks for the tip!