Canon CP-E4N Compact Battery Pack Filter Size_37mm This accessory is required if

This accessory is required if you want to do any type of photography through a telescope or spotting scope

or breathtaking landscapes

This PhotoRepublik lens hood is the equivalent of the Leica 39mm Wide lens hood

and full-time manual focus is available even while in AF mode

Canon CP-E4N Compact Battery Pack Filter Size_37mm This accessory is required ifThe external Canon Compact Battery Pack CP E4N improves flash recycle times significantly and increases the number of continuous flashes. The pack takes the optional CPM E4 rapid change Battery Magazine loaded with 8 AA size batteries. The CP E4N has quieter operation during recharging.