After noticing peoples' eyes seeming softer on the left side of the picture and running through several of tests, I have determined my 70-200 f2.8 IS is noticeably softer on the left side. Yes I made sure my camera perpendicular to the focus plane when testing.
I have never done this before so please bear with me.
1. Is it better if I call to arrange the repair by telephone or by using this link?
https://www.usa.canon.com …tegoryid=216&modelid=7469![]()
2. Should I put the lens in the original Canon box? I was planning just to send the lens with the covers and wrap it really well with bubble wrap and pack it really well in a regular box.
3. My lens is still under warranty. Do I need to send the warranty card with it? Or is a copy of the receipt enough?
4. What else should I enclose with the lens?


