"fractint formulafile=sucker.par" is how I've been running it. http://ecn.ab.ca/~brewhaha/img/Sucker.jpg I used "Inversion" and "Distance" parameters with an HSL combination. I hav no clue what that frm: prefix is supposed to do, so I am not using it here. I put some code into my synthesizer to write numbers into the formula included here. Sucker { ;Formula output from a synthesizer at ; http://groups.google.com/group/rec.music.makers.synth/msg/5c4b7ef1274cb806?d... ; CC-BY BrewJay's Babble Bin z=fn1(pixel), c=fn2(pixel), iter=0: iter=iter+1 if (iter>= 1 ) && (iter<= 1 ) z=z*z/( 9 , 22 ) +c endif if (iter>= 2 ) && (iter<= 4 ) z=z*z/( 11 , 16 ) +c endif if (iter>= 5 ) && (iter<= 6 ) z=z*z/( 14 , 11 ) +c endif if (iter>= 7 ) && (iter<= 10 ) z=z*z/( 12 , 16 ) +c endif if (iter>= 11 ) && (iter<= 12 ) z=z*z/( 11 , 28 ) +c endif if (iter>= 13 ) && (iter<= 14 ) z=z*z/( 9 , 22 ) +c endif if (iter>= 15 ) && (iter<= 16 ) z=z*z/( 7 , 14 ) +c endif if (iter>= 17 ) && (iter<= 20 ) z=z*z/( 9 , 18 ) +c endif if (iter>= 21 ) && (iter<= 24 ) z=z*z/( 10 , 20 ) +c endif if (iter>= 25 ) && (iter<= 26 ) z=z*z/( 14 , 22 ) +c endif if (iter>= 27 ) && (iter<= 29 ) z=z*z/( 10 , 15 ) +c endif if (iter>= 30 ) && (iter<= 32 ) z=z*z/( 11 , 18 ) +c endif if (iter>= 33 ) && (iter<= 33 ) z=z*z/( 14 , 22 ) +c endif if (iter>= 34 ) && (iter<= 35 ) z=z*z/( 11 , 11 ) +c endif if (iter> 35 ) iter=0 endif |z| <= real(P1)} Default { ; Basically a distortion of the m-set. CC-BY-NC ; http://ecn.ab.ca/~brewhaha/ ; Fractint Version 2004 Patchlevel 4 reset=2004 type=formula formulafile=sucker.par formulaname=Sucker function=zero/ident center-mag=0/-12.02/0.03333333 params=3072/0 float=y maxiter=255 inside=0 symmetry=none periodicity=0} Inversion { ; 51.08s/megapixel@866Mhz CC-BY-NC ; http://ecn.ab.ca/~brewhaha/ ; Fractint Version 2004 Patchlevel 4 reset=2004 type=formula formulafile=sucker.par formulaname=sucker function=zero/ident center-mag=-1.9074/-3.1791/2.332101/1.4248 params=3072/0 float=y maxiter=255 inside=0 outside=atan invert=4.49797449255688/-1.90237816270341/-3.20530796661091 symmetry=none periodicity=0 colors=@altern.map } LastEscape { ; 51.52s/megapixel@866Mhz CC-BY-NC ; http://ecn.ab.ca/~brewhaha/ ; I did not use this one in a JPEG. ; Fractint Version 2004 Patchlevel 4 reset=2004 type=formula formulafile=sucker.par formulaname=sucker function=zero/ident center-mag=-1.9074/-3.1791/2.332101/1.4248 params=3072/0 float=y maxiter=255 inside=0 proximity=1000 outside=fmod invert=4.49797449255688/-1.90237816270341/-3.20530796661091 symmetry=none periodicity=0 colors=@rainboh.map } Distance { ; negative of rainboh.map CC-BY-NC ; http://ecn.ab.ca/~brewhaha/ ; 52.62s/megapixel@866Mhz ; I will get a more accurate rainboh out of PSP ; with a grayscale pasted into an HSL separation. ; Fractint Version 2004 Patchlevel 4 reset=2004 type=formula formulafile=sucker.par formulaname=sucker function=zero/ident center-mag=-1.9074/-3.1791/2.332101/1.4248 params=3072/0 float=y maxiter=255 inside=0 outside=tdis invert=4.49797449255688/-1.90237816270341/-3.20530796661091 symmetry=none periodicity=0 colors=zzz0uz0sz0oz<3>0gz0ez0dz0cz<3>0Xz0Wz0Uz<7>0Kz0Jz0Hz<8>07z06z05z\ <3>01z11z21z<12>E0zF0zG0z<5>O0zP0zQ0z<4>Y0zZ0z_0za0zc0zd0ze0zh0zi0zl0z\ m0zo0z<2>z0zz0wz0sz0oz0mz0i<3>z0cz0bz0az0_z0Z<4>z0Rz0Qz0O<16>z06z05z04\ z03z02<4>z41z40z50<9>zG0zH0zI0<4>zP0zQ0zR0<2>zW0zY0zZ0z_0z`0<3>zg0zi0z\ j0zm0zo0<2>zz0wz0sz0oz0<10>Yz0Wz0Uz0<4>Oz0Nz0Mz0<3>Hz0Fz0Ez0<7>6z05z04\ z03z02z0<14>0zD0zE0zF<6>0zP0zQ0zR0zS0zU<2>0zY0zZ0z`0zb<3>0zi0zj0zm<3>0\ zv }