Now there is an easy way to have the extra flash power you need in the field The Flash X-Tender packs flat weighs less than 3 ounces and sets up in 30 seconds and your flash output is extended a minimum of 2 full f-stops! Bring your birdsand animals to life with an eye highlight Used and praised by nature photographers world-wide When used with TTL Through-The-Lens flash metering exposure is automatically handled by your camera and flash and no special compensation is required