Ho un Hoya Pro1 CPL slim che ha una buona tenuta, ma non blocca il cofano, si puņ ancora estendersi. Ci potrebbe essere lieve vignettatura a F4, ma niente che non possa essere risolto in PP. In F5.6 - F8, č andato del tutto.
Sorry for the poor Italian
What I was trying to say was:
I have a Hoya Pro1 slim CPL which has a tight fit but it doesn't block the hood, you can still extend it. There might be very slight vignetting at F4 (or maybe it's just light fall-off), but nothing that can't be fixed in PP. By F5.6 - F8, it's gone altogether.