Digital BW, The Print

In a message dated 1/15/2002 10:18:16 AM Eastern Standard Time, 
smithj72@... writes:


> The explanation the users on that 
> forum received from Nikon was that this is only a pre-flash, and 
> that its power would not affect overall exposure.  Some testing 
> was done by a user and he came to the conclusion that this was 
> indeed what was happening, because as he measured it, the 
> internal flash was firing at only 1/10 of what was necessary to 
> create a proper exposure.
>       Thought you might find that interesting.
> 

I was told a different story by Nikon. They said it  fired at 1/40th power, 
quite a difference from 1/10th. At any rate, a pre flash implies an exposure 
BEFORE the shutter is open, while my mirror test shows the flash fires while 
the shutter is open. And again, if the internal flash is suppose to be 
disabled, it should not fire even a pre flash. I don't know howc many of you 
shoot in a studio situation, but if you are triggering one strobe with a 
radio, which in turn triggers other strobes with optical slaves, you are 
foiled by a pre flash. Hence the problem Nikon is suggesting is not a  
problem is a major problem for some photographers.
George J Kunze


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