Hi Lee,
Mandelbrotmix4 pars computed in UltraFractal look the same as those computed in Fractint. It would be strange if both programs have the same identical bug.
The Mandelbrotmix4 pars I rendered in UltraFractal look the same, because I used a modified formula. I added a parameter @p4 that I set to a non-zero value if needed and the init section has: if (@p4 != 0) z = conj((-a*b*g*h)^j) else z = (-a*b*g*h)^j endif Cheers, - Sylvie _________ ________ _______ ______ _____ ____ ___ __ _ E-mail address: sylvie.gallet1@libertysurf.fr Web site: in English : http://www.fractalus.com/sylvie/homepage.htm in French : http://www.fractalus.com/sylvie/homepagf.htm _________ ________ _______ ______ _____ ____ ___ __ _