M-mount rear cap for Jupiter-12?

[yossarian123]

Pretty much as the title says - I've got a J-12 w/the extra-deep screwmount rear cap. Except I only shoot with a LTM M-mount adapter, so putting the lens back in my bag means I have to unscrew the adapter then screw in the rear cap. Pretty clunky, especially if I'm walking around outside. Is there a better solution - is there an M-mount rear cap that's deep enough to cover the J-12's protruding butt?

 

[hipsterdufus]

Bam:

http://www.ebay.com/itm/New-Metal-R...281?pt=LH_DefaultDomain_0&hash=item2eb8555f29

It's meant for the 21mm super-angulon, but will also work with Jupiter 12.

 

[yossarian123]

Bam:

http://www.ebay.com/itm/New-Metal-R...281?pt=LH_DefaultDomain_0&hash=item2eb8555f29

It's meant for the 21mm super-angulon, but will also work with Jupiter 12.

Sweet, that's perfect. Thanks.

 

[ray*j*gun]

Just cut a 35mm canister (plastic) and its a perfect fit....if you leave the cap on the other end its as good as a screw on rear cap.