My impressions about this:
positive:
This flash can be extremely much; for the wealth of functions, the operation is well managed.
In addition to the standard auto flash functions and manual adjustment possible from 1/1 to 1/128 flash output.
Integrated broadcasting and reflector discs
Display illuminated (already important, because if you / will flash woman is logically sometimes relatively dark)
large light angle range
Flash output
Wireless flash control
Good workmanship and good handling
neutral:
Through the performance offered and the wealth of functions quite large, heavy and expensive.
negative:
Legal loud flash head zoom noise
Conclusion:
Who needs this lightning ?:
Who wants to be dedicated flash technology really ready for anything.
However, if you 'only' a flash for 'normal' automatic flash photography
(Spontaneous flashes on occasions, such as ceremonies, festivals indoors)
is certainly better off with the SB-600/700 or the SB-400.
I also use for such occasions like the SB-400, small, light,
(Because the SB-900's a pretty weighty chunk)
powerful enough and suitable even for indirect flash lighting for many occasions as a swivel reflector is present.
But who wants to have everything at lightning technically feasible for his Nikon camera today, gets the SB-900 a very good system flash unit; I use it again and again.
