Re: Image artifact solution sought

[Stephen Ylvisaker <stephen@xxxxxxxxxxx>]

Picture was taken through the plexiglas of the window, or canopy. I suspect partial polarization, although an inaccurate description, sort of lenticular polarization of two polarizers that are at 90° to each other. My second guess is that the camera scans the scene, rather than captures the scene, and these are artifacts of that.

This is a good puzzle , Andy. Thanks. I expect to learn something new from this.

Stephen
> ----- Original Message -----
>
> Hi,
>
> I was given a sample of some photographs taken of the propeller
> of an airplane made with, I believe, a phone camera. There is an
> obvious anomaly present. Although I suspect the reason I am not
> really sure (really I do not know!) how this came about. If you
> can shed some light on the effect for me it would be much appreciated.
>
> See the images here:
>
> http://people.rit.edu/andpph/a-misc/phonecamera-prop-effect-1.jpg
>
> Thank you for taking the time to give me a hand!
>
> cheers,
> andy
>
>
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