Disposable cameras are a fun way to get into classical photography. However, they can also be a valuable source of interesting parts that can be put to other uses. For example, as [Billt] demonstrates, their viewfinders can be repurposed into a rather interesting lens for more serious cameras.
[Billt] was lucky enough to score a grabbag of used disposable cameras from a local film lab, and tore them down for parts. He was particularly interested in the viewfinders, since Kodak equipped its disposable cameras with actual plastic lenses for this very purpose.
[Billt] wanted to see what these lenses would do when thrown on the front of a proper digital camera, and set about designing a mount for that purpose. The 3D printed part was designed to mount one of the viewfinder lens assemblies on the front of any Sony E-mount camera. In a rather nifty trick, [Billt] realized the lens assembly could be installed in the adapter by pausing mid-way through the 3D print to drop it in. The only unfortunate thing? The lenses didn’t really work, and all the camera could see was a haze of unfocused light.
With the aid of some cardboard experiments, [Billt] decided to make some changes. The front element of the viewfinder was dumped, with the rear element being used solo instead. This was fitted to the adapter on a simple slide mechanism so that focus could be reliably adjusted. With these changes, the lens came good, and provided some really interesting shots. It’s quite a cropped lens and it can achieve a very close focus distance, as little as 1 inch in testing. It’s quite sharp in the center of the image, while softly blurring out towards the edges—something that sounds very familiar if you’ve used one of these disposable cameras in the wild.
Sometimes it’s fun to grab a random piece of junk to see if you can turn it into something good. Video after the break.
When these cameras were in their heyday, Kodak received over 97% of them back for recycling, making them one of the most recycled items in the world. In the trade they were called “single-use cameras”, because unlike other plastic artifacts, there were not “disposable”, they were re-used.
Everything was ground and added to the mix for molding. The optical elements were always made from virgin plastic, though even these elements were ground and used as feedstock for non-optical items.
That’s awesome! I always felt guilty using the things!
yuk. One can see way too much the glasses of the dude, and not enough the image through the lens.I wish AI would delete humans from such videos. They don´t bring anything useful. Talking heads just eat your time.