I put default boxes next to layers with translucency (same distance), also I tried change all setting of DoF quite a long time, but still same issue, result:
No DoF - http://i.minus.com/iWYJOquzJl6ya.PNG
Variants of DoF - http://i.minus.com/ilFSZErZcfmh8.PNG , http://i.minus.com/ibguBkMdfm8JSm.PNG
Also variant of DoF, but strange is, that straight transition showed at back (screenshot with described used materials) - http://i.minus.com/ibcT2iDfkgK1Uz.png
translucentlitspritematerial details:
http://i.minus.com/iC1BDDnhjBMHJ.PNG
http://i.minus.com/iKTIIO9s8pTcf.PNG
Thanks for your time! It’s really important for me.