The PROMASTER 100SL for Canon sports a full complement of advanced features in a small form factor. Its hybrid design gives you the option of an LED light for videos or flash for still photos. The 100SL is well-balanced so it 'just feels right' on your camera while throwing a flattering quality of light towards your subject. Use it in a wireless flash system as a master or slave unit. You can even use the 100SL to remotely fire your camera!