ANGENIEUX RIGHT ANGLE VIEWER FOCUSING?

[mr_x]

Hi,

Have a 16mm Angenieux F2.2 17-68mm ZOOM LENS w/ RIGHT ANGLE VIEWER for my c-mount Bolex H16. The zoom looks sharp through the Bolex but when I attach the 120 type dog-leg viewer it is out of focus whatever I do. Is there no diopter on this viewer please - how do you adjust it?

There are several movable parts on the viewer but they all seem to work towards balancing the 120 viewer to the film gate, none effect focus on the viewer. Unfortunately the manual is in French (& I didn't vote Brexit) a language I can cope with, but not with technical terms. There is no diagram showing a focal adjustment for the viewer.

Help please - looks like a good lens, I hope the viewer isn't going to spoil it

Thanks

[mr_x]

Update:

The Angenieux was focussed at 1.2 metres through the 120 viewer. To get the same object in focus using the Bolex viewer I had to revolve the Angenieux focus ring to the 1.5 metre mark so there is currently a focal discrepancy of around 12 inches / 30cm.

The lens / viewer are in focus with themselves, but the arrangement appears to be out of focus at the plane of the Bolex film gate?

Any thought please?

Thanks.