Canon EOS AF Microadjustment Guidebook
Here is a link to the article, where the link to the PDF can be found. http://www.learn.usa.canon.com/resources/articles/2016/af-microadjustment-landing.shtml?categoryId=12 http://www.learn.usa.canon.com/app/pdfs/articles/AF_MicroAdjustGuide_desktop...