The Goodman Art Adapter is a 3d printable DOF adapter that works with any kind of smartphone and has a replaceable projection screen. It gives you great creative flexibility, plus it's very easy to assemble. All the files and plans are free to download.
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You can easily replace the projection screen inside the Goodman AA. Print as many frames as you please, and come up with your projection canvas ideas. Every semi-transparent material is suitable as a projection canvas, and every material has its own unique characteristic. Here's a few idea (click on the pictures to see some test footages):