Ekeler drew the adapter in Rhino 3D, a piece of software for professional graphics and CAD work. He has a background in industrial design, so it only took him an hour to conceive and a further 60 minutes to manufacture with his Monoprice Select Mini v2 3D printer. "I've seen people use cheap cellphone lens adapters on the Game Boy Camera before, but I wanted to see what a high-quality lens would do for this vintage piece of technology," he told Engadget. With a little cleanup it was soon fitted to the back of his blue Game Boy Color and second-hand Game Boy Camera.
The adapter should, in theory, work with a host of Canon lens. For his first photography session, however, Ekeler wanted to capture images that would normally be impossible with the standard Game Boy Camera lens. That meant a piece of telephoto glass -- the biggest one he could find, given Nintendo's peripheral has a tiny sensor and a ridiculous 10.81 crop factor. "I figured if I'm going to have a telephoto lens on this thing, I might as well go all out and push it to the limit," he said. That meant a 70-200mm, along with a 1.4x teleconverter for a 3000mm equivalent field of view.
The large lens made shooting a challenge, however. The weight distribution isn't ideal and there's no tripod mount on the Game Boy Color. Ekeler captured his images handheld with one finger on the shutter button and his other hand adjusting the focus of the lens. His first batch of images include birds, boats and even the moon. The latter was particularly tricky, according to Ekeler, because the Game Boy Color doesn't have a backlit screen. It was also hard to find the moon because the camera preview refreshes at roughly one frame per second in low-light conditions.
The designer is now considering a 2x Canon teleconverter and "something insane like a Canon 800mm" so he can do some close-up wildlife photography. Ekeler also wants to experiment with some portraiture using a fisheye lens -- the sensor crop would give it a normal field of view -- and studio lighting. "I just really like the use of professional photography gear with this little 128x112 greyscale camera," he said. "It's very funny and interesting to me." And if people are keen, Ekeler will clean up the original 3D drawing and post it to Thingiverse for anyone to download and modify.