Likely to Scumble
shirtfront in this portrait I
used extra thin glazes of
opaque white over darker
passages underneath - until
I got the value I wanted. I
used a bristle brush as I
wanted a cotton gauze; if I
desired a silk then I would
have most likely finished
with a sable.The effect on the illusion of atmospheric perspective (below). Transparent passages exhibit greater clarity,
an optical sensation peculiar to nearby planes where the least amount of atmosphere is present between our
eyes and the plane in question. More distant planes are viewed through more atmosphere, the density of
which alters the colors and values to a greater extent the greater the distance involved, reducing clarity.http://www.geocities.com/~jlhagan/lessons/scumble.htm (4 of 5)1/13/2004 3:53:00 AM