Cameras
Selected Nature Photography Resources from Willima Chan

See: Photometric Terms

Using a copy stand:
The lights should point to the object middle from two sides at an angle of 45 degrees to the perpendicular of the object middle. Light level should be about two stops stopped down from max aperture. It is far more important where to block light than where to put it. Lights that are too diffused end up with slightly unsharp and less brilliant pictures. You may want to span a piece of black cloth above the object and use barn doors around the lights to make sure that they hit only the object and *not* the camera or anything else in the room.. See: photoquack.de/tutorials/repro.htm