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[OM] rear curtain sync??

Subject: [OM] rear curtain sync??
From: "Dirk Wright" <wright@xxxxxxxxxxxx>
Date: Fri, 04 Feb 2000 09:22:32 EST
As someone else mentioned, can these cameras be modified for rear 
curtain sync? My guess is no, but I'm curious about how it is used in 
the Nikon world? Doris?

Just to be sure I have this correct, rear curtain sync is when the the 
sync contacts are closed when the trailing curtain begins to move, as 
opposed to the usual X sync which occurs when the leading curtain is 
fully open? 

Assuming that the above is correct, I can't think of the difference it 
would have on picture taking. For really slow shutter speeds, the stuff 
illuminated by ambient light would be blurred from movement, and the 
flash illuminated stuff would be sharp. For normal sync, it seems that 
the ambient stuff is recorded after the flash fires. For rear curtain 
sync, the ambient stuff would be recorded before the flash fires. I'm 
not sure what difference this would make. Anyone? 


Be seeing you.


Dirk Wright

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