Re: [OM] F280 + OM4T

[Chuck Norcutt]

Nearly totally useless information.  The only reason to use FP mode is 
for fill flash.  The guide number table says: "This chart displays the 
range when there would be no influence of available light."  Knowing 
that a fill flash should provide about 20% of the total light and also 
knowing the guide number at a given shutter speed one can calculate a 
reasonable fill flash exposure... but it will be time to go home before 
I'm done.

Chuck Norcutt


On 7/18/2012 2:39 PM, usher99@xxxxxxx wrote:
> http://omesif.moosemystic.net/om-sif/flashphotogroup/f280.htm
>
>
> Super FP Flash Guide Numbers (m.) Normal "OTF" Flash Range Guide (ISO
> 100) Super FP Flash / Range Chart
> Shutter speed OM-707 OM-3Ti, OM-4Ti
> 1/2000 3.1 2.6
> 1/1000 4.3 3.7
> 1/500 6.2 5.2
> 1/250 8.8 7.3
> 1/125 12.4 10.4
> 1/100 15.6 -
> 1/60 or slower - 14.7
>
> Student of Dr. Flash, Mike
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