Lens Changer

thingiverse

VERY MUCH IN DEVELOPMENT AND USE AT YOUR OWN RISK! DO NOT HANG YOUR EXPENSIVE LENSES FROM IT SHOULD YOU TRY TO MAKE IT! DO NOT BLAME ME IF YOU BUST A LENS! A bit more complicated build awaits you, as it requires 3D printing some parts, purchasing bolts and screws, and performing metal work to create the mounting plates and belt buckle. This device is designed to be worn on your belt. The idea is that there's always one lens mounted on it, a second on your camera. To change lenses, simply remove from your camera and clip into the open spot on the device, then remove the other lens and put it on camera. This way you don't have to put a lens down. VERY IMPORTANT: If you decide to make this, the bolt must have a locknut. The pins should be made from metal as well as the top and bottom mounting plates and the belt buckle. I'm going to fashion the pins from stainless steel nails I have and manually cut the mounting plates from aluminum. The springs are generic ones I have lying around but it's essential that they have a smaller diameter than the pin head. There is an image showing where the pins and springs go. DO NOT 3D PRINT THE BOLT, NUT, SCREWS, SPRINGS, PINS, BELT BUCKLE AND MOUNTING PLATES as I've included those only to give an overview of how the device comes together and they must all be made from metal. The mounting plates should be used as a paper template only. They are a Nikon F-Mount but may need some fine tuning. The bolt is based on a McMaster-Carr part, but I found a Zenith brand stainless steel bolt M5 x 20mm and M5 locknut locally. The McMaster parts are 90576A104 and 92005A322. The 10 screws, also based on McMaster-Carr (90065A151), but again I found a Zenith 6G x 18mm stainless steel part locally. Note that at this point the hole sizes and counter sunk dimensions for the 10 screws in the mounting plates are incorrect and I haven't bothered to fix it as I will eyeball it when I make them. You want to ensure the screw heads can't scratch your lens mounts, so the counter sunk will be adjusted accordingly. There is a commercial device like this available but I don't own one, nor is this directly copied from it. In fact, I've never seen one in person. If I am breaching copyright, please let me know and I'll remove it. It's just that I have wanted one since the first time I saw it on the web so I thought I'd give it a try myself.