In making reversal shots (positive image)from my Afghan Box Camera, the photo will be a mirror image. So I built a mirror scope to fit onto my lens so that I can make the photo to be of the right orientation again.

In using the scope , the camera lens will be perpendicular to the subject and the mirror placed at 45dgree will reflect the image into the lens.

I am new to CAD design and 3D printing so the prototype is really crude but I thought I will share it here anyway. The mirror used is acrylic mirror which I bought from an art supply store.

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The scope, pardon the tape.
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Slotted into a Fujinon 210mm lens

Here the video I made about it.