360 Apo Ronar CL - copal size?

[sesshin]

I have a Rodenstock 360 Apo Ronar CL in barrel mount but I can't seem to find the right Sinar lens board to fit it. I have a Copal 3 lens board sitting here but the lens is slightly too big for it.

Is my Copal 3 drilled too small? Or is there another size opening lens board I should be using instead? the lens is pictured below. Thanks.

[Steve Hamley]

Barrel lenses don't come in shutter sizes because they're not in shutters. If a hole size or a standard shutter fits, it's by chance. So no, your board is most likely bored for a Copal #3, not a 360mm Apo Ronar barrel.

Cheers,

Steve

[sesshin]

Thanks for the info. So what would be the best way to mount this lens onto a lens board then?

[Steve Hamley]

If you're handy with tools, enlarge the hole with a round file and mount the flange by drilling and taping holes for mounting screws. Sometimes the flange will work as a retaining ring, and you can avoid drilling and tapping mounting screws.

If you're not handy with tools, any machine shop can do it, and maybe some camera shops.

Cheers,

Steve

[Steve Hamley]

BTW, if you go the shop route, just give them the flange and board, not the glass!

Cheers, Steve