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Build your own impossible 3D triangle!

Photo Sunday: "Illusion"

Why 2D is more fun than 3D

This week's theme being "Illusion", I decided to retry something I did a few years ago - building an impossible 3D triangle. I found instructions here and got busy. Once done, the thing looked nothing like a triangle; the trick is to look at it from just the right angle, preferably with one eye. The camera makes it almost look real.


I think that this is really awesome.


Thank you quimby! :)


how to do that??


Hi Karina,

it's quite simple actually - for folding instructions, just follow the link:

I found using a fairly a long lens (>100mm) helps "flatten" the look of the triangle. Getting the right angle is critical. Put the triangle on the floor or on a table and walk around it to find the right spot. Mount the camera on a tripod there. The tripod helps, since you can make small adjustments to the angle and composition without having to start over every time. Hand-holding gets very tiresome. Keep shooting and adjusting until you get it right.


well done


so easy to do but hard to see !!!

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Erik Moberg  2024