TAKO. INTERNET SEIT 1996.
Olympus-OM

[OM] Bare Bulb Flash

Subject: [OM] Bare Bulb Flash
From: jowilcox <jowilcox@xxxxxxxxxxxxxxxxxxx>
Date: Fri, 3 Nov 2000 10:04:59 -0600
Oly Shooters:

I've just picked up bare bulb head for my Vivitar 4600 flash with ded module 
for Olympus.  With this head in place, the settings appear to be very simple:  
it does a full dump.  No TTL, no auto, just a dump of everything it's got.

The only spec associated with the output is "60 watts/sec."  Vivitar simply 
suggests using a flash meter.  Hey, I would always use a flash meter if I 
actually had one.

Based on 60 watts/second, is there a way other than brute empirical testing to 
ballpark a guide number for this type of light source?

Joel Wilcox
Iowa City, Iowa USA


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