The new metz mecablitz 44 af 3 knows what photos need thanks to its ttl function it produces perfectly exposed flash shots this powerful compact ttl capable zoom flash unit is simple to operate and it minimizes the danger of the red eye effect furthermore the 44 af 3 can be used in manual mode and it offers a partial light output level as well as a number of interesting special functions it has the guide number 44 for iso 10021 and 105mm focal length