Archived posting to the Leica Users Group, 2002/02/25
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Not that I disagree with you. If that theory holds true, which is not a TTL, nor auto mode with the flash, in fact its a manual mode, then the HSS mode should work with M6 as well. I see no difference of the shutter operating in 1/1000 between the M7 or the M6. Just one of those inquisition of the whys and hows on something that I don't know and yet wants to find out. I might be overly complicating the issue, but I don't think the explanation is that simple with the integration between the Metz 54 and the M7 in HSS mode. - --- Eric <ericm@pobox.com> wrote: > Henry: > > >Still, how does the strobing > >prevent the overlapping of exposure between the > >curtain travelling across and the flash. > > If you're using fluorescent lighting, how does the > light prevent the > overlapping of exposure between the curtain > traveling and the fluorescent? > > It doesn't. Just as the light from one flash is > decaying, it fires again. > An almost steady stream of light. Rather than sync > the firing of the flash > to the precise instant the entire frame is open, it > fires the flash all the > time. It's not like the flash fires "double" and > has an over exposure. > It's constantly firing to make a steady light > source. That's why it can't > do auto or TTL. The flash can't cut itself > short...or the exposure wouldn't > be even across the image. It also cuts down on the > effective guide number > of the flash. Takes more energy to continue to > cycle the flash like that. > Less overall light. > > > Eric > -- > To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html __________________________________________________ Do You Yahoo!? Yahoo! Sports - Coverage of the 2002 Olympic Games http://sports.yahoo.com - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html