Hoping someone can help. I have a really lovely Zeiss Flektogon 20mm but it's developed a looseness/rattle.

You can see (and hear!) from the video that the Aperture Ring and the plastic cover behind it are loose and are free to move backwards and forwards, and the Aprture Ring itself moves loosely and smoothly with no clicking into place.

As you can see, if I squeeze everything together the Aperture Ring goes back to having a nice click and positive feel.

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#photography #vintagelens

I'm hoping a bit of disassembly and tightening something up will sort things out, but can't see how to get into the lens to do this.

Looking online there should be screws near the mount area, but if they are there they're covered by that plastic cover.

Can I just force it off to have a look or is there some secret I'm missing?

Any advice welcome. TIA.

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#photography #vintagelens