Attached Link: ftp://denyce.free.fr/synthese/vue/blur.jpg

=> Don't use superior antialiasing but try the standard one. I was disappointed with DOf in vue 4. All my Vue3 scene using DOF looks ugly with superior antialiasing in Vue 4 (There was no problem in Vue 3) I made some try a long time ago (look at the jpeg link below 256ko) => [25,80%] mean 25 subray per pixel and quality treshold at about 80%... Of course it was an older version of Vue (4.05) but try standard antialiasing, maybe you will have better results