300mm Imagon disc size question

[Mark Sawyer]

I have a 300mm h/5.8 Imagon in a #5 Compound shutter, but only have the h/9.5-11.5 disk. I've located a full set of discs from a 300mm h/5.8 that was in a #4 Compound shutter. Does anyone know if that set will fit my lens? Thanks!

[Bob Salomon]

I have a 300mm h/5.8 Imagon in a #5 Compound shutter, but only have the h/9.5-11.5 disk. I've located a full set of discs from a 300mm h/5.8 that was in a #4 Compound shutter. Does anyone know if that set will fit my lens? Thanks!

Yes but the largest one may not do anything due to the size of the opening in your shutter. That is why Copal III mounted 300mm only came with 2 disks.

[Peter K]

The 300mm Imagon normaly was mounted in a Compound IV/10. And the 360mm in a Compund V/12, later in a Compur eletronic 5FS. If the 300mm is mounted in the bigger shutter only the mounting ring for the disks differs.

To be shure measure the diameter of the disks. For the 360mm disks it's 85mm, the 300m I've sold some times ago sorry.

[Mark Sawyer]

Thank you, gentleman!

[cowanw]

My 300mm Imagon came in a compound 5 with 3 discs (and green filter) and original box. all three discs seem to do their jobs.
Regards
Bill