[Leica] Flash Sync Question

[vintagebill at verizon.net (bill h)]

All that Brian said, and you can get some interesting effects. For one 
simple thing, the low ambient light might write to film, complimenting the 
part of the image lit by the flash. I used to love to use flash and K25 in 
broad daylight. Show pictures.

bill h
----- Original Message ----- 
From: "Brian Reid" <reid@mejac.palo-alto.ca.us>
To: "Leica Users Group" <lug@leica-users.org>
Sent: Wednesday, June 08, 2005 12:21 PM
Subject: Re: [Leica] Flash Sync Question


> There's a very simple way to think about this flash sync issue.
> (It only became simple when flash bulbs went the way of the dinosaur and 
> "flash" came to mean "X sync" or "strobe" or "electronic flash")
>
> Electronic flash units emit light for a really short amount of time. Small 
> numbers of milliseconds. What it means for flash sync to "work" is that at 
> the instant the flash fires, the shutter must be entirely open.
>
(snip)