Depth of Field - everything is blurry!

hi there, i tried again - and failed. my render output is everytime blurry. i have no sharp element in my rendered image. as u told me i tried with F-Number 14 and ISO200 - nothing happened. the result is still blurry, not that heavy like in the first post, but blurry… is it, because i am working in milimeters? i can chance every number several times, but the rendered image is blurry in any way!

i changed the FoVoverride from 1 to 20, 38 and up to 100 - everytime the same image… WHAT!!! =D