terraPin Kaiju 6x18 Pinhole Gamera
by schlem, published
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Kaiju (怪獣) is a Japanese word that literally translates to "monster," and is used to refer to a genre of tokusatsu (special effects-based) entertainment. Kaiju films usually showcase monsters of any form, usually attacking a major Japanese city or engaging another (or multiple) monster(s) in battle.
I grew up watching Japanese Kaiju movies on TV every Sunday afternoon on channel 11's Sci-Fi Theatre. Gamera, a rocket-powered flying turtle beast, was and remains my favorite Kaiju. I hope it is obvious that the terraPin Kaiju is a giant mutant pinhole, a pinhole Gamera!
6 X 18 cm frame!
86mm concentric film plane!
Designed for 0.40mm pinhole!
Use exposure calculations for the PINH5AD!
Now with exposure calculations with Reciprocity Failure for common B&W films; see:
Featured on the Adafruit 3D Hangout for 7/2/15!
I typically embelish my pinhole cameras with knurling to add interesting visual and tactile textures. Unfortunately, the mutant size of the Kaiju required so many thousands of extra polygons that they constituted a persistant source of non-manifold errors and rendering ambiguity. I hope to further develop the Kaiju to include the knurling in the future and I cite the "Knurled Surface Library v2" by aubenc as recognition of his contributions to my camera design.
CLICK HERE for the latest photographs I have made with the various terraPin cameras.
I have created a 3D Printed Cameras group on Flickr
The mission is to share and promote open source cameras and related parts, created with CAD applications and 3D printing. Please join and post content!
The sample photos are WIDE (6X18). Unless you view them full screen, they will be severly cropped. Normally, my local film lab scans my film, but 6 X 18 is too big for their NORITSU scanner. All scans shown are my ham-fisted work and may deviate from original exposures in various ways. I vow to do better.
NOW AVAILABLE 6X18 sanning adapter for the Epson V500!
This work is licensed under the Creative Commons - Attribution - Non-Commercial license. This license applies only to the files and documents available for download from the Thing Files section of this Thing.
All other related content (photographs, videos, and verbiage such as contained in "Description" or "Instructions" ) are excluded from this license. with all rights reserved, unless specifically available for download This notice constitutes a clarification, not a change, to licensing for this design.
The terraPin Kaiju is a comparatively simple camera. Assembly should be intuitive, but I plan to add some exploded parts diagrams in the near future for clarification.
4 x panhead M3 bolts 10mm length
2 x M3 nuts
1/4-20 flanged nut for tripod mount
Finishing tools like files
Flat black paint for inside (minimize reflections)
Translucent red plastic for indexing window
3D printed parts always required some finishing for precise fit. Pay particular attention to the winder baffles, the shutter, the outside joint of the top frame, and the sliding index cover plate.
This camera uses counter-sunk bolts to hold the top frame and shutter assembly in place. I used a M3 tap for the bolts that hold the top frame (middle two holes). The M3 nuts slide into the nut traps to hold the lid on - enlarge these (outer two) holes with a 1/8" drill bit and clear debris from nut traps. Refer to the lid if unclear which holes do what.
I don't glue my knob and winder assemblies. They can break (never done it, but possible), and replacement is easier if you just press fit everything together.
The terraPin Kaiju relies on parts from prior terraPin designs, and individual parts can be downloaded from source Things (see sources) should the need arise for a single part.
The tall piece with the diamond shaped hole through it is the latest version of a 120 film clip. The take up roll (the one you wind) is sometimes prone to unwinding a bit during unloading. The clip slides into the spool cavity during loading and prevents light leaks during unloading. Click here for the original design from the P6*6
You will find a document in the "Thing Files" section for download that goes into greater detail. I have included some version of this part with all of my 120 film pinhole cameras.
The film winds on the left and the frame is indexed at frames 1, 3, 5, and 7 for 4 exposures per roll of 120 film. The film clip can prevent your roll of film from unspooling during unloading and being ruined by light leaks into the roll of film.
A word about winding: DO NOT TRY TO PULL THE FILM with the uptake knob. Give a bit of slack with the supply knob, take up slack with uptake knob, repeat until desired frame number is in the window. Horsing the film can cause it to fold inside the arc, necessitating a PITA teardown and possible loss of a roll of film. Film is precious - be methodical!
As always, I am at your service if you have questions - please post in the comments section for everyone to see!
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terraPin Kaiju 6x18 Pinhole Gamera by schlem is licensed under the Creative Commons - Attribution - Non-Commercial license.
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