Oregonian wrote:
How did you get your background to come out transparent, PhotoComix? I used the ellipse tool to get rid of the bg.
I tried a sphere with one of yours. It looks a little blurry in the center.

About MathMap for best quality remember to check in "Setting" the supersampling box
about the BG
chose the Sphere filter,(that in Map menu, there is another in Distort ),
click preview
then the "User Values" tab
there in the bottom there is "background "if you click on the color bar will pop out a gimp color widget ....
pull the last slider "A" to the max
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I like your sphere...we had a sort of sincronicity, few how ago i used a similar texture to use to confront the Gmic and Mathmap "sphere" filters
Quite stunning result all completly different
here the image i used
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aq.jpg [ 421.6 KiB | Viewed 9231 times ]
here MathMap "rectangle2 ellipsoid" that is used on square image create a sphere
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sphere_000002.png [ 977.65 KiB | Viewed 9231 times ]
here Mathmap /map /Sphere
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sphere_000003.png [ 752.34 KiB | Viewed 9231 times ]