With an impressive guide number of 64 for ISO 100 and 200mm focal length, the Metz mecablitz 64 AF-1 digital is one of the most powerful compact flash units on the market. A USB interface means that updating the firmware is a very simple process, and the newly-developed motorised zoom means the mecablitz 64 AF-1 digital is capable of illuminating focal lengths from 24 to 200mm. The sync cable socket can also function as an output socket for the Nikon, Sony and Pentax versions, so that it can be used to trigger a studio flash. bit.ly/1aScML4
