Frage von pennor:
Hello! 
 How exactly does a polarizing filter? He is supposed to reduce reflections of windows as far as I know. Are there different levels of intensity? Are there disadvantages for the picture when using such a filter? 
 Thank you very much 
 pennor
 Antwort von  jens:

 Just ask wiki ... 
 Antwort von  Markus:

Or use the search function with the search term "polarizer." Then you find usdiesen Post: 
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Accessories for Canon DM-XM2 (yes, because it is synonymous to the polarizer) ;-)
 Antwort von  pennor:

Wikipedia clearly ups ... .. sorry. 
 Thanks for the replies. Did not know that this is called a polarizer filter synonymous. Since there is much more to ...