Fuji Ef-x20 Flash A super compact TTL-capable unit, the EF-X20 Flash from Fujifilm helps add a bit of fill light to your scene. This flash offers a guide number of 66' at ISO 100 and the 28mm (full frame) setting. It also has a built-in wide-angle panel that increases coverage to 20mm and will work as a wireless slave unit. Manual power setting is possible with a dial for 1/1 to 1/64 power and it has exposure compensation from -1 to +1 EV in 1/3 steps. Additionally, it runs on 2 AAA batteries and has a recycle time of 5 to 6 seconds. Included with the unit is a soft pouch and a tripod adapter.