The Canon EP-EX1511 Viewfinder Extender provides a 15mm extension that improves the use of the viewfinder. Find your view The extender gives you more freedom when composing images, the handy accessory provides more room, so you won't have your nose squashed against the LCD display. The Canon EP-EX1511 Viewfinder Extender is suitable for all Canon EOS DSLR cameras apart from the EOS 7D and 1 series.