Nikkor 10.5mm f/2.8 - 62mm filter threads modified

[toups]

So I noticed.   

Thinking that I may use the can to cut a ring and insert it as was done to originally protect the lens.  This should allow room the hood/cap to screw into the modified hood ring pressed onto the lens but still protect the dust seal.  Will investigate more later. and update.

Of course there may not be enough clearance for that.

Not overly concerned but figured I'd post the info as a warning.

[Erik Lund]

For the auto focus to work the fit must be frictionless or close to. Otherwise there will be strain on the gears that are not meant to bee.
There is no space for anything between the felt seal and the lens hood tube.
Also the front element group will bee loose to rattle around.

Yes you have raised a warning.

[toups]

Yes looks like I need to add a ring without adding friction.  Need it to be a bit thinner than the existing petal ring in order for the hood/cap male threads to clear whatever ring I may add.  Unfortunately, the press fit is too good (too tight) so won't try to remove the ring on the lens although I would have liked it be a millimeter or two higher.  Thanks for the warnings.  From a quick test with a shim, it was clear there is no room between the lens hood and the felt seal.  I do have the petals on enough of a ring that I could cut a ring from that.