P6*6 120 Pinhole Camera
by schlem, published
Please check out my latest 3D printed pinhole camera, the terraPin: http://www.thingiverse.com/thing:495230 It is directly descended from the P6*6*
This pinhole camera shoots medium-format 120 film! Shoots a 6X6 cm frame!
NEWS FLASH - Illustrated assembly instructions in MAKE: magazine edition #41 out Sept 2014 !!
New P66W - Wide Angle version - Kodak Ektar 100, Fuji Acros 100 and Fuji Velvia 50 transparency film:
New Butter Shutter for remote cable release
Look for addendum to user's guide, but more info here:
Viewfinders! You asked for 'em, I designed 'em - more info here: http://www.thingiverse.com/thing:363857
An alternative set of parts has been designed to capture a wider angle of view. The original P66 already shoots a fairly wide angle frame at 62 deg horizontally; the P66W shoots an angle of 77.5 deg horizontally. For comparison, a 50mm lens on a 35mm film camera has a 40 deg horizontal angle of view.
The wider angle means a faster camera too: f/135 vs f/167. Details in Instructions.
-------------- P66 Specs --------------
50mm focal length
designed for a 0.30mm pinhole
f-stop of f/167
62 degree horiz. field of view.
-------------- P66W Specs --------------
35mm focal length
designed for a 0.26mm pinhole
f-stop of f/135
77.4 deg horiz. field of view.
Photos from the P6*6 are posted here:
Processing by Moon Photo, Seattle http://www.moonphotolab.com/
Images on Flickr may differ from raw scans in contrast and brightness.
The P66 traveled to Amsterdam for Worldwide Pinhole Photography Day 2014
On that rainy day, I spoke with one of the organizers of our AMS meetup, Alex Yate of Pinholista.com, about 3D printing and pinhole photography on the Pinhole Podcast
Visit the 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!
If you download this from somewhere besides Thingiverse, and printed it, please post pics on this thingiverse.com page! Please - I want to recognize and support you too
I understand skepticism; I hope that if you have been delaying your pinhole photographic adventures, the onslaught of my dubiously composed and poorly-chosen subject matter will convince you that this camera works and that you can print one and shoot photos!
As to how to build and use the P66 - All is revealed in the new User's Guide. Anyone can put this camera together and create amazing photographs. Assembly is detailed and simplified in a new document: "P66_assy_revised.pdf"
No 3D printer yet?
Kits and assembled cameras available on Tindie
Hate the flat shutter plate on front of the "lens"? Dress it up a bit with the trim plate and pinhole cap!
Worried that the friction-fit of the cap on the body could pop open and ruin your film? (IFAIK, this has never happened) A Sliding Body Clip secures the cap securely to the body, preventing a dreaded accidental exposure of your film.
New, photographic filter adapter! Use neutral density filters to slow exposure times, or colored filters for effects. Not just for the P66, good for any camera without a threaded lens barrel:
And a tiny P66 keychain!
I have shot dozens of rolls of film through this camera now. I find this camera a delight to shoot. I am very happy with the frame indexing. Like any camera, excessive movement during exposures will blur your image. This makes very short exposures (1-2 seconds) impractical for best results unless you can absolutely immobilize the camera. A neutral density filter (which increases exposure duration by whole stops) or a remote shutter release mechanism will address this limitation and is a future improvement I plan to make. Alternately, for "quick" exposures, you can cover the pinhole with your finger, open the shutter and (literally) manually time your exposure with your finger, then close the shutter - another old-time pinhole trick.
Incorporating aubenc's Knurled Surface Library V2, and modeled around the handy 120 Film Spool by Jakebot, the P66 builds on the PINHE4D and PINH5AD pinhole cameras designs.
12-6-13 After some experimentation with different 120 films, I find that some spools are slightly larger than others. This affects the clearance at the winder spool and rotating baffle (small slotted disk); the cap will not snap completely shut. I haven't suffered any damage to negatives from this, but, just to be sure, I have reworked the baffle to a thinner 2mm thickness. You can download and print either the whole winder assembly (knob, baffle, drive) or just the baffle. I suggest having a spare knob and drive handy if you try the Film Clip accessory: http://www.thingiverse.com/thing:197924
New Wider angle version P6*6W f/135
Exposure duration table updated including:
- Fuji Neopan Acros 100 B&W neg film
- Ilford Delta 100 B&W neg film
- Kodak Ektar 100 Color neg film
- Fuji Velvia 100 Color slide film
- Fuji Velvia 50 Color slide film
- Ilford FP4 B&W neg film
- Kodak 400TX B&W neg film
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If you have questions, please post a comment - I try to be very responsive to Thinginauts.
*New P66W - wide angle version*
Assembly is essentially the same as for the original P66, using the following alternate parts:
which consists of the following four parts:
See "P66_Users_Guide_x,doc" for instructions on printing, assembly, and photography" Also P66_assy_revised.pdf contains better diagrams and assembly instructions. These documents will be merged in the future.
*"makevol41-P6X6.pdf" is an article I wrote for MAKE: Magazine #41 on assembling the P66. It is a distillation of the original user's guide assembly section, with better graphics.*
NOTE When unloading the camera, and as the full spool is removed, the film might be loose on the spool and not fully protected from light by the backing paper.
I have designed a film clip which slides in with the empty take-up spool and prevents the film from unspooling (and subsequent light leaks) when unloading the P66, It is an easy fix, requiring no modifications to the camera. There is a small lip inside the cavity that will prevent the clip from rotating.
Everything is designed to fit on the smallest of 3D printer beds, the largest dimension being just more than 5 inches (128mm). If you print on something smaller, the large parts could be rotated 45 degrees. If this is a limitation for you, let me know, and I will supply a suitably modified file. Also - only tested with BLACK ABS - if you want/need to print this in another color/material, a couple coats of a flat black paint on all interior surfaces will guarantee a light-proof camera.
You can see additional pics of p6*6 prototyping at:
----- Printed Bits ------
50mm or 35mm extension
Camera cap and winder assembly
Shutter plate or New Shutter plate (with pinhole disc)
(all parts are also available non-plated)
----- Non-Printed Bits ------
4 x 3mm-16mm long socket bolts, washers, and nuts
1/4 - 20 flanged nut (for tripod mount)
Pinhole 0.30mm -50mm focal length
Pinhole 0.26mm -35mm focal length
I highly recommended that you find some translucent red plastic film and some self-adhesive black velvet or felt. See User's Guide for more infomation.
Recently included is an Exposure Duration document for several readily-available films with reciprocity failure. If you can expand on this, please share.
I hope that the various Pinhead Pinhole cameras arouse an interest in this marvelous photography genre. Also refer to PINHE4D or PINH5AD for links to technical information and tutorials.
I remain at your disposal should you have questions.
--- SOME HELPFUL LINKS ---
Here's a couple of videos that explain the basics of pinhole photogaphy (worth a watch!):
An encyclopedic article with cross references:
A self-described comprehensive pinhole tutorial:
The basics from Kodak - a quick and dirty primer.
Make your own pinhole:
Pinhole Designer - an excellent pinhole design and exposure calulator. The reciprocity failure function is gold. Sadly, Windows only, but worth it.
Mr. Pinhole - More calculators and more links.
Worldwide Pinhole Photography Day:
A paper pinhole camera, 2D printed in a Czechoslovakian magazine, in the 1970's: http://www.pinhole.cz/en/pinholecameras/dirkon_01.html
Books, books, books; Knowledge is power: