A Speed Key is a key on your keyboard that is assigned to a Lightroom slider. When a Speed Key is held down it activates its superpowers! It enables you to increase or decrease an assigned Lightroom slider with any of the following methods; By scrolling your mouse wheel (Scroll Up to increase or Scroll Down to decrease the slider) Arrow keys (Left & Right for normal changes) (Up & Down for the alternate Shift Changes) Left Click and drag the mouse left/right or up/down Mouse cursor left/right or up/down By sliding your finger on the trackpad left/right or up/down For example to increase the exposure... Simply press and hold \\"Q\\" then scroll the mouse wheel up or use any of the methods mentioned above.