So I'm about to pull the trigger on buying the canon 17-40 L, and before I do I want to know what the deal is with returning them for calibration. I've heard some people get them and they're fine, but many people get soft copies, who then send them in for calibration. My question is where do you do that through, canon directly, or where you bought it from, and does it cost anything? B&H has good service right? I was thinking about ordering from there because I've heard good things, but I want to be sure I understand the whole returning it for recalibration thing first. Thanks for the help.