This might be useful link:
http://www.chem.helsinki.fi/~toomas/photo/flash-discharge.html
This is useful to know for stopping motion btw. I needed similar information
(and couldn't find) when I was trying to photographs swing dancers in the
air. http://www.evrimgallery.com/Dance/karynnaflip1_edit.jpg and
http://www.evrimgallery.com/Dance/karynn_throw1_ED.jpg
later,
evrim
> Austin, Joe (NCI/IMS) wrote:
>
> Does anyone have a chart of flash durations at the various
> manual settings
> for the 550EX (and 420EX).
>
> ___________________________________________________________
>
> Hi Joe,
> Just curious why one would you need this? I mean Guide
> Numbers have worked
> fine to gauged manual mode for decades.
> Peter K
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