422 Ion Operations Manual
Mode Description Result
{Subtract}
Top and bottom layers
color and opacity sub-
tracted from each other
{Multiply}
Top and bottom layers
color and opacity multiplied
together
{Screen}
Top and bottom layers col-
ors inverted and then mul-
tiplied together
{Overlay}
Does a multiply or screen
effect based on the light-
ness or darkness of the bot-
tom layer
{Lighten}
Top layer’s color merges
with bottom layer’s color,
with the lighter color win-
ning