Goodman Zone - Upgraded 6x6 Ground Glass

thingiverse

The [Goodman Zone](https://doragoodman.com/goodlab-project/goodman-zone-medium-format-film-camera/) is an incredible 3D printed medium format camera designed by Dora Goodman. It's very customizable in both form and function, and although it's generally considered a zone focus viewfinder camera, there are files available to make a focusing screen from tracing paper, which temporarily clips onto the back of the camera in place of the film back using magnets. After using that paper focusing screen for a couple of rolls, it became clear to me that it was the weakest part of the experience of using this camera the way I prefer (which is to say, not with zone focusing). I designed this as a replacement for the ground glass holder provided by the Goodlab. It uses an actual 6x6 ground glass (I sourced mine from [this](https://www.ebay.com/itm/284427309430) lovely eBay shop out of Lithuania, and am very happy with it, but it's pretty easy to [make one yourself](https://petapixel.com/2019/12/23/how-to-make-a-ground-glass-focusing-screen-at-home/) too). ### There are three STLs to print: * (1x) - **Ground Glass Holder.** This holds the ground glass, and interfaces with the Goodman Zone camera body using 4x2mm cylindrical neodymium magnets. * (1x) - **Ground Glass Shade.** This optionally attaches to the ground glass holder to block extraneous light from hitting the focusing screen. It works significantly better for me than the Goodlab version. This piece interfaces with the ground glass holder using 6x3mm cylindrical neodymium magnets. I know, two magnet sizes is stupid. But it's what I had on hand. Go remix it if you only want to stock 4x2s. * (4x) - **Glass Retention Corners.** These are superglued into the corners of the ground glass holder after installing the ground glass, to keep it in place permanently without obstructing the view. * You'll need a total of 8 magnets of each size. Blender file also available on this page for those who want to remix it for different frame sizes or whatnot. Stay tuned for a project I hope to finish during the summer of 2022 - an improved 3D printed film back that shoots 6x6 frames and doesn't leak light on or off the camera.