Canon Community

I am trying to find out if canon designed a reference mark on the filter for locating the zero point, or the 90 degree point. When removed, I can see two small gaps in the ring that holds the glass element. These gaps are at opposite (180 degrees) si...

Now that the most recent tariffs were overturned by the Supreme Court, will Canon refund purchases equal to the amount of the tariff refund when the US government gets around to refunding Canon. I made my purchase through Canon.