Angulon 18.5cm and 25cm combined lens in barrel

[B.S.Kumar]

I got this lens a couple of days ago. It consists of 18.5cm and 25cm cells with the same serial number on both cells. I mounted it on a 5x7 camera, and it appears to cover fully. The focal length of the combined cells is ~115mm, measured from the lens board to the ground glass. I will mount it on a larger camera in a day or so and find out whether it covers. The cell screws into a regular Copal 1 retaining flange.

I have searched the internet, and can't seem to find any information. Does anyone know?

Thanks in advance,
Kumar

[lucaas]

Angulon f6.8 lenses are convertible and can use the front and back lens separately to obtain 3 focus length.
The focus length of the front lens is twice of the combined focus length, the rear is 1.5 times.
Some early angulon lenses were marked with single lens focus length as yours.

[B.S.Kumar]

Thanks. The lenses aren't marked with the f/number, just Angulon 25cm / 18.5 cm and the same serial number on both cells.
Also, while the flange for the entire lens is a Copal 1 size, the individual cells don't fit into that shutter.

Kumar

[Paul Ewins]

I've got a catalog from 1931 which includes a table for converting Angulons. The 120mm Angulon has a 250mm front element and 185mm rear element so i guess that is your lens.

[Oren Grad]

Page 9 of the 1934 Schneider catalog on the Camera Eccentric website has the details as well.

[B.S.Kumar]

Thanks, Paul and Oren. That answers my questions.

Kumar