It's one of those freshnel lenses you glue to your rear window to act as a fisheye lens. It's actually surprisingly good. I can see the ground about 1.5m (5ft) behind me. I wish it would reach my rear bumper as that's what I'd like to see but this helps!

Also, I took the picture with a poor man's smartphone - my apologies.

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[–] [S] 11 points 2 months ago (1 child)

It's a bit rubbery film and sticks with just water sprayed to the glass and then squeezed out. It can be removed and re-applied. My main concern is freezing in the winter and how it'll react if I mix in some anti-freeze.

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