On 23-1-2019 9:47, omniverse wrote:

> Not sure if that would be the way to put it, since mainly perpendicular
> scratches are what reflect light most. Not parallel to the viewer/camera and
> light source, because that would be along a line of view... I think.

Well, I was not sure how to describe the orientation with regard to the 
light source (and camera of course): parallel, perpendicular, a bit 
confusing. You got the idea though.

-- 
Thomas

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