If these are set up like most other stereo MF cameras, the lenses are spaced such that they shoot standard 6 x 6 pairs in 120. You advance two frames for each stereo shot. Or cap one lens and shoot 12 mono shots. Coincidentally, this lens spacing is close to average interocular spacing, so normal parallax is captured. Eric Goldstein -- On Fri, Aug 13, 2010 at 2:49 PM, David Sadowski <dsadowski@xxxxxxxxx> wrote: > Did this use two rolls of film at the same time? > --- > Rollei List > > - Post to rollei_list@xxxxxxxxxxxxx > > - Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe' > in the subject field OR by logging into www.freelists.org > > - Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with > 'unsubscribe' in the subject field OR by logging into www.freelists.org > > - Online, searchable archives are available at > //www.freelists.org/archives/rollei_list > > --- Rollei List - Post to rollei_list@xxxxxxxxxxxxx - Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe' in the subject field OR by logging into www.freelists.org - Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with 'unsubscribe' in the subject field OR by logging into www.freelists.org - Online, searchable archives are available at //www.freelists.org/archives/rollei_list