I have a bias toward medium format (120) film. The magic of photographic chemistry, in medium format, provides a resolution and sensitivity that digital cameras can only approach for a king’s ransom. A 6X6 image has the potential for 400 megapixel-equivalent images (citation). This resolution combined with the low cost of excellent MF gear make a compelling case for shooting 120 film.
For pinhole photography, the tiny frames of 135 film (24 x 36 mm) cannot compare with lush images on 120. Indeed, a 135 negative is about a quarter the size of a 6X6 MF frame (56 x 56 mm). I have little use for 135 pinhole, but I don’t make cameras for just me.
Mind-bogglingly, there is a whole generation of people who have NEVER shot film, and 35mm film is often their only option locally. I designed the terraPin Snappa 135 pinhole camera for these people. If the Snappa can ignite a passion for pinhole photography, these new recruits to the community may look farther afield for tools and supplies.
One of the shortcomings of shooting 135 in a pinhole camera is the guesswork of indexing your shots. Granted, you have at least 36 frames on the roll of film, so there is ample film for overwinding. I find that wasteful, however, and the Snappa has a sprocket-driven cog that precisely indicates when a frame has been advanced. This indexing device works splendidly, but adds some complexity to the construction. The camera could also be versioned without that feature, and for other reasons, it’s still not quite ready for release to the wild.
If the idea of 135 pinhole camera is of interest to you, I’d love to hear your thoughts.
These photos were made in and around Seattle, and on a SCOPES meetup to the UW campus.
Film: Fuji Neopan Acros 100
Camera: terraPin Snappa 135-film 3Dprinted Pinhole Camera prototype, FL 27mm, pinhole 0.23mm, f/117 (coming soon to Thingiverse.com for download)
More Hall Annex, a historical building that housed a research nuclear reactor.
Medic 1 & 10 quarters, Harborview Hospital, Seattle
Pond Water !
Suzallo Library, UW
William H. Gates Hall, UW
More of the More Hall Annex, interior
Pond Water II
Tank Hatch
Punkins
Steampunk Water Tower
Arches
William H. Gates Hall, UW
Film: Kodak Ektar 100 negative film
Camera: terraPin Snappa 135-film 3Dprinted Pinhole Camera prototype, FL 27mm, pinhole 0.23mm, f/117
These rolls were processed and scanned by Moon Photo in Seattle; all images are as scanned without alteration. More photos from this and my other 52Rolls can be found HERE.
52 rolls 
These are wonderful! I am not super thrilled with 135 for pinhole either but you might be making me change my mind.
LikeLike
I second Moni’s comment. But it is a great idea to make a 135 pinhole since so many people don’t have ready access to processing 120 film.
LikeLike