"Sebastian H." <van### [at] gmxde> wrote:
> A glas marble with a planet earth texture.
> Using photons and an area light (without photon option enabled).

The Big Blue Marble!  Cleverly done, and looks cool.

The land masses have a thin dark strip around them, probably from the
selection technique you used in your graphics app to make the land mass
alpha-channel image.  If you wanted to get rid of them, you could: select
all the ocean areas, "expand" them all by 1 or 2 pixels, feather them by
the same amount, then delete all the areas (back to transparent again.)
This give a much smoother transition between opague and transparent areas.
(I use Photoshop for this, but I imagine the same tools are available in
most good graphics apps.) I learned about this technique in Deke
McClellan's book, "Photohop Bible."

Ken W.

Post a reply to this message