maxsamples 2500, camera setting: exposure 1.75, fstop 2.8, gamma 1.5, vignetting 0, hotpixel remove 0.05, min_disp_samp 2, size 2000 x 1700 px, octanerender for 3dsmax, time 34 minutes 32 second, 2 gtx470.
thank you paquito, ttaberna, matey, enrico cerica, gabriellefx, paoloverona, proupin and all people with your tips and comments.
regards
