@schrockwell If it's not too much trouble, I'd love to have the STL file, since I'm going back to Tenerife in the second half of March and I plan to take photos there, using the Game Boy Camera, the New Nintendo 3DS, and my recently acquired Kodak Charmera. Regarding the filters, I bought these: https://amzn.eu/d/0djF7J6j And as you can imagine, it's inconvenient and cumbersome to carry them around without an accessory like yours. As for the colors, I'm not sure if they're correct or not. But since the photos are for personal use and not professional, I'll manage with the results until I figure out how to get better ones.