OK, I've rephotographed several of my Achaean League coins to get rid of the blue background.
My new amateur's method is:
1.
Mac white laptop as background.
2. Little
tube that holds exacto blades as pedestal.
3. Incandescent bedside
lamp as lighting
4. two 50-round 9mm parabellum bullet boxes on either
side of pedestal to set camera on.
5. Sony cybershot 7.2 megapixel cameral on incandescent light setting, 200 iso, no flash on a 2 second timer.
Here are thumbnails of the befores. The afters can be seen in my
gallery.