Hi Nada, here just a copy and paste from another double capture photo of mine:
The technique I use is to take 36 captures (the whole roll of slide film) first then rewind the film carefully not to miss the point just before the film enrolls completely back into the catridge and load the film again. The overlapping frames are nearly accidental because there are 36 captures in between the two. I run the Lomo in ISO 400 speed and let the lab push the double exposed ISO 100 slide film to 200 and (of course) crossprocess it C-41.
Thanks for your kind comment!
- albrecht -