Durst 138 lens cones for the turret

[ajsikel]

Fellows, since some of my lenses like Componon 150mm have extended rear element , it won`t let the turret rotate.
The lenses need special cones.
Do you know the name for them, are the lenghts of the tubes/cones adjusted to the focal lengths of the lenses?
143514
I will appreciate your help.
cheers

[dentkimterry]

You can get extended lapla boards for specific lenses with a long rear element but I got a Durst Dutub 1 which will extend all lenses. Works great.143515

[ic-racer]

The mounting cones are actually part of the barrel. They can be removed to swap but you still need to match the correct cone to the correct barrel. For example, on occasion I found a lens with poor elements but the correct barrel/cone and swapped it with a lens with good elements.
My turret has a 150mm Componon, 210mm Componon and a 240mm Componon-S
143516

[Luis-F-S]

Or you can have the barrel extensions machined, or just use a Unipla instead of the turret. L

[ajsikel]

thanks a lot, I will go and hunt for some cones.

[Drew Wiley]

Or just lock the turret rotation screw and have only one lens installed at a time. No big deal.

[Bogdan Karasek]

Or just lock the turret rotation screw and have only one lens installed at a time. No big deal.

That's what I did with my 138.... the turret cannot be removed on earlier models so I just mounted a Componon 240 and do the smaller formats up to 4x5 on my Omega D2v