Optimized for use with the D-LUX, V-LUX, and DIGILUX series of point-and-shoot cameras, the CF 22 Flash from Leica is an exceptionally compact unit with a guide number of 72' at ISO 100 and 35mm. It offers standard coverage of 35mm for full frame cameras, but can be set to 24mm with the use of the included diffuser. It also offers manual power settings of 1/1 and 1/8. Additionally, it runs on 2 AAA batteries and has a recycle time of 6-8 seconds.
With the DIGILUX 4 the flash offers 35mm equivalent coverage of 7.4mm and 5.1mm