Micro Four Thirds Pinhole "Lens" - 11mm FL

thingiverse

Are you tired of your modern lens with it's tack-sharp focus, vibrant colors and incredible contrast? Do you wish your photos had strangely colored areas, hot spots and heavy vignetting? Is f22 entirely too fast for your tastes? Well strap in, folks, I have just the project for you! When I first started my photography class in high school, I fell in love with alternative photographic methods. Whether making a slit scan camera or playing around with strange processing effects in the darkroom, I was into it. Pinhole cameras were my favorite though: empty film box, some tape, a piece of aluminum foil and a needle: instant camera! Pinhole photography in the digital world admittedly loses some of it's charm, mostly due to the convenience factor: some of the fun of pinhole photography was wondering exactly how the scene was framed or if you had the exposure right. What convenience takes away, it also gives back in spades: now you don't have to wait until you get back to a changing box to put new film into the camera just so you can take one more picture! Thanks to hstahl for helping out with the MFT mount! This STL is just a cap to affix a pinhole aperture to. You will still need to make your own aperture. I followed the excellent instructions on how to make a precision pinhole at http://www.withoutlenses.com/articles/how-to/drill-your-own-precision-pinhole-apertures. Any maker here will probably have most of the tools mentioned and should be able to improvise for anything you don't have (I used my digital calipers instead of a micrometer), so all you need is time and patience. Though, if you lack the patience like I did in high school, aluminum foil and a needle will work, just know that your photos are likely to look even worse than what I posted. The focal length for this is 11mm: this is as short of a focal length you can have with a pinhole and have an image circle that mostly covers a MFT sensor. Ideally, the pinhole diameter should be 0.14mm, or roughly f80 for this focal length. Calculations for pinhole sizes and daylight exposure estimates can be found at http://www.mrpinhole.com/calcpinh.php The aperture I used was designed for my 20mm FL pinhole cap (which I'll post later) and is roughly f115, which is why I think I have such poor colors and so much diffusion in my photos. Once the pinhole was made, I cut it and taped it to the backside of my printed adapter with duct tape that I then covered with electrical tape (to avoid internal reflections).