Hello,
could someone please help me? I have the following render result:
The red marks show you some examples of my problem 
. Areas of the Render result are unsparp, blur and noisy. What is my mistake?
Thanks in advance…
what AA filter are you using?
post a screen grab of your settings
Here are some of my settings …
instead of sharp quadratic, try Area, or just Quadratic and post your results
also, instead of adaptive subdivision, try adaptive dmc (with defaults) and also post that result
adaptive dmc worked! Thank you very much!!!