I have generated a figure in MMA by ContourPlot3D. How can I export this figure in high-resolution TIFF format(say, 1200 dpi for lines, 300 dpi for halftone and color in CMYK format, and 600 dpi for a mixture of lines and halftone).
sf1[x_, y_, z_] := x *(1/(1 + 0.06))^3 + y*(1/(1 + 0.06))^2 - z/3;
sf2[x_, y_, z_] := x *(1 + 5*0.06)*(1/((1 + 5 0.06) + 0.06))^3 +
y*(1 + 5 0.06)*(1/((1 + 5 0.06) + 0.06))^2 - z/3;
sf3[x_, y_, z_] := x*(1 + 10 0.06)*(1/((1 + 10 0.06) + 0.06))^3 +
y*(1 + 10 0.06)*(1/((1 + 10 0.06) + 0.06))^2 - z/3;
pla = ContourPlot3D[{sf1[x, y, z] == 0, sf2[x, y, z] == 0, sf3[x, y, z] == 0}, {x, 0, 200}, {y, 0, 120}, {z,
0, 210}, Ticks -> None, Mesh -> None,
BoundaryStyle -> Directive[Black, Thickness[0.004]], Boxed -> False,
AxesOrigin -> {0, 0, 0},
ImageSize -> 350,
ImagePadding -> 20,
ContourStyle -> {Directive[Green], Directive[Opacity[.6], Red],
Directive[Opacity[.5], Blue]}
, Lighting -> "Neutral"]