B+w 900 Lens Hood

[Vincenzo Maielli]

As alternative to the chinese vented metal hood, i think to buy the B+W 900 lens hood (39 mm threated). How work the B+W 900 with the 35 or 50 mm Summaron or Summicron? Can give rise vignetting in combination with a filter as B+W KR3 or KB3?
Thanks to all.
Ciao.
Vincenzo