Introducing EOSHD C-LOG and Film Profiles Pack EOSHD C-LOG (Custom-LOG) is designed to expand dynamic range and give Canon DSLRs without official “Canon LOG” a similar capability. With C-LOG you gain a professional LOG colour grading workflow. C-LOG gives you back the ability to use LUTs designed for Canon LOG and other presets in post. Now you have an unlimited range of looks and more dynamic range to play with.