Przykład 21. Kilka działeń
convert -size 30x30 xc:black -fill white -draw 'circle 15,15 5,15' \
\( +clone -shade 110x90 -normalize -negate +matte \) \
\( +clone -clone -2 -compose Plus -composite \) \
\( -clone 0 -shade 110x50 -normalize +matte \) \
\( +clone -channel blue,green -fx 0 +channel \) \
\( -clone 2 +clone -compose Multiply -composite \) \
-append seq_process_fx.gif
