I use two 120 roll-film pinhole cameras: the Holga 120WPC and the Zero Image 6x9.
The Holga comes with a 6x9cm mask and a 6x12cm mask. However, since I do not have the 6x12cm mask, I only use my Holga to shoot 6x9cm images.
The Zero Image 6x9 comes with two dividers that allow me to shoot 6x4.5, 6x6, 6x7, or 6x9cm images. However, since I have no desire to shoot any of the smaller aspect ratios, I only use it to shoot 6x9cm images.
When I shoot 6x9 images, I am able to capture 8 images per roll of 120 film.
The Holga is made of plastic. The Zero is made of wood.
The Holga has a .3mm pinhole size and a 51mm pinhole to film plane distance.
The Zero has a .18mm pinhole size and a 40mm pinhole to film plane distance.
Both have tripod sockets.
The Zero cost twice as much as the Holga.
Of the two, the Zero is my personal favorite.
120 Pinhole Cameras by
Narsuitus, on Flickr