Canon EF 100-400mm f/4.5-5.6L IS II USM Review, Field Test including RAW CR2 Samples

My lens review and field test of the Canon EF 100-400mm f/4.5-5.6L IS II USM is based on my experience using it in on the job as a professional photographer.  You will find tips and analysis for using the lens across a broad category of professional photography applications.