16mm Colour Positive to 35mm BW Internegative optical blow-up?

[Gautam Valluri]

I've previously done 35mm to 16mm reductions, and 16mm to 16mm effects work, in colour and BW on the Oxberry Optical printer with excellent results.

I was wondering if I could take a contact-printed 16mm colour positive (print stock) and blow it up to 35mm BW negative/ IN?

Contrast build-up aside, It should be possible right? The camera side of the Oxberry is seeing a colour image, just like if the same BW negative stock was in a film camera seeing a colour scene?

@Dirk DeJonghe@Robert Houllahandid either of you ever do something like this in your respective labs?

[Robert Houllahan]

Should be possible to do on the ACME optical printer we have.

Would require some tests.

[Dirk DeJonghe]

You need to use the 2234 B&W intermediate filmstock processed to a gamma of 0,5 for starters.