The LumiQuest FXtra is a compact filter (gel) holder designed to hold colour correcting filters onto your flash when needed to balance your flash for shooting with mixed light sources such as fluorescent and incandescent, or when you simply want to add creative effect. FXtra fits the Rosco Strobist filter collection as well as other brands. Additional LumiQuest (and many other brand) accessories can still be attached while the FXtra is in place allowing you to colourise the flash while using a variety of light modifiers.