The Metz flash unit 58 AF-2 probably provides the handiest and best value for money, and by the second light is a useful additional feature that can spare a second flash.
Thanks to its high guide number better illumination than the comparatively weak built-in camera flash (the difference can be seen in cameras with high ISO setting only if you look closely), excellent illumination even in very short-range, very rapid (in sequential shots almost "endless") Recycling with well charged battery
(Best ENELOOP 1900 mA. These are not cheap except some special offers, keeping however in contrast to "normal" batteries for months almost full charge, the lengthy theater with unloading (necessarily erf. Wg.Memory effect) and go only for a short-use for a few photos so Knips is significantly reduced).
Very economical power consumption. Flashing worked even with 2 completely empty sucked batteries (which was an extreme problem earlier: If only 1 battery limp made, usually went no more, you had to replace the entire battery pack, if you had no instrument going to check which battery was the culprit).
After about 1-2 days intensive testing you are familiar with some general. Prior knowledge with all useful flash functions.
The menus are simply designed and thus learn quickly. Relatively low incorrect setting risk if you tried the functions and has got it.
The default / factory settings, however, are partly. Not ideal and should be changed.
With the "TTL" you can actually do anything wrong, even in bounce flash: The camera controls the light.
However, an error in the manual: The secondary reflector flash works engegen (at least for my model for NIKON) manual text does not automatically once the main flash was placed upwards or sideways, but the second flash must explicit be turned on in the menu (is by default OFF) , Then he flashes but with forever. However, this is not detrimental: The light is distributed on both flashes no double shadow etc.
TIP: you want to place as a substitute for an expensive wireless-1 flash slave mode with wireless adapter (for example if you'd like to hold up the flash with your hand at portraits, or for product shots somewhere other than directly to the camera:
Cable connection from BIG, best the long version with 3 m length (straight cable, not coiled cable)! As a hand holder should a mini-aluminum tripod, etc. dranschrauben (there ggf.schon from 1 euro in the dime store)