Quote Originally Posted by Diapositivo View Post
If a 13 x 17 mm camera mounts a 13 x 13 110 cartridge, and it uses the "registration pin" for film advance, the result is going to be a disaster in any case because a 13 x 13 110 cartridge will have its registration pins at a distance slightly above 13mm while a 13 x 17 110 cartridge will have them at a distance slightly superior to 17 mm.
You're assuming that a cartridge preflashed for 13x13 (if such a thing exists) would have different perforations than a cartridge preflashed for 13x17. As the example photos clearly show, this Diana 110 camera simply puts a 13x13 image in the 13x17 image area. Lomo doesn't make a special kind of 110 film just for this one camera.