Gradient
background is an alternative to white or black background. It changes
from white in the forground to black in the distance (in reality
from almost white to almost black ) . It is a result from shadowing the
background if a diffusor tunnel (light tent) is used. In most cases it is
neccesary to have a balanced light from below the white acryl glass background.
|
 |
Stellerite 11x8 cm specimen from Gunnedah, Pottinger Co., New South Wales, Australia. |
 |
An alternative: Background fading from red to black. White can be replaced by other colours, if the white opaque arcyl
glass is replaced by a semitransparent acryl glass and a colour foil
below is used. I this case a light from below the specimen is needed. The
result is a very dramatic picture. |