On Tue, Sep 11, 2012 at 09:42:00PM +0100, Bruno Postle wrote:
> Are these photos sharpened?
No, "from camera". Not a sony, but a Nikon.
> You can see this effect by drawing a one pixel line in an image,
> then remapping it in Hugin, it will become 'fuzzy', but remap it
> again and it won't get any fuzzier. Real, unsharpened, photos don't
> have hard edges like this, there is always a transition between two
> colours - This is nothing to do with the quality of the lens.
In theory, when I photograph a vertical divide between a white and a
black plane, and the camera is just a few pixels non-horizontal, I
should have pixels where the one on the left is entirely focussed on
the white plane, and the one on the right is completley focussed on
the black plane.
In practise, there is lens fuzzyness, but you say that has nothing to
do with it.
In practise, to combat aliasing, there is a fuzzy-filter in front of
the sensor. This makes the bayer pattern work in difficult situations.
In this case, it will cause some "black" to leak to the left pixel and
some "white" to the right pixel. So in this case, TWO pixels end up not
being completely white or completely black.
Roger.
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