The lightweight and compact Leica SF 24D Flash Unit is very useful for photographers to control flash exposure. This electronic flash unit helps in controlling exposures of TTL-flash when used with LEICA R8 and R9 digital cameras. The Leica SF 24D Flash Unit can also be used with the M6, M7, M8 Leica digital cameras. 

• This flash unit supports automatic flash exposures control of R and Leica M cameras with central X hot-shoe contact
• You can find information about distance, aperture, and film speed on the LCD of the Leica SF 24D Flash Unit
• This electronic flash unit includes two lithium batteries CR 123, which can be quickly recharged and used for many number of flashes
• The flash indicator in the Leica SF 24D TTL Flash unit enables photographers to correct and check flash exposure immediately
• This shoe mount type Leica SF 24D Flash Unit has a recycle time of 5 seconds
• The angle of coverage of this unit is 63o with a 35mm lens, 28o with tele diffuser, and 84o with 24mm wide angle diffuser lens
• The dimensions of the Leica SF 24D TTL Flash unit are 2.6 x 4.3 x 1.6" (W x H x D)
• This unit weights 6.3 oz
  

The Leica SF 24D electronic flash unit is designed to be compact and also to provide the maximum distance between the flash reflector and the camera lens, which minimizes the risk of red eye when photographing people and animals. With the Leica M9, M8.2, M8, M7 and M6 TTL the light output is controlled by its TTL flash exposure meter; with other Leica M models it is controlled by the automatic flash itself. In automatic mode, six automatic flash apertures 2.0/2.8/4.0/5.6/8/11 are available. An override switch allows the exposure to be varied by plus/minus three stops. All settings and other information are legibly displayed on the Leica SF 24D's illuminated LCD. These include an exposure confirmation indication and flash ready light which are simultaneuously displayed in the viewfinder of the Leica M9, M8.2, M8, M7 and M6 TTL.

The ISO film speed range of the Leica SF 24D extends from ISO 12 to ISO 3600 in M/TTL range and from ISO 25 to ISO 800 in A mode. The illumination angle corresponds to a focal length range of 35 to 85 mm, and can be extended by means of two supplied diffusers, enabling flash exposure with wide-angle lenses down to 24 mm and telephoto lenses up to 135 mm focal length respectively. Power is supplied by two 3 Volt 123 A lithium batteries, permitting rapid recycling times.