Re: PHOTO-3D digest 1356

[P3D Greg Erker <erker@xxxxxxxxxxxxxx>]

>The inexpensive flash meter is called a guide number!!! Most flashes
>have a calculator you set film speed into and distance and can read an
>f/stop.

  This is true. I do this all the time for normal distance shooting.
I estimate the flash to subject distance (use use the Realist range
finder then read the distance off the focusing wheel) then divide my
GN by the distance to get the f-stop to use. Works great.

  For macro shooting it's not as easy. The GN rating partially counts
on light coloured walls in the room to achieve its full value. In
a macro shot the walls are too far away to have any effect.

  Other complications are when I want to put the light thru a diffuser
or bounce it off a white or coloured reflector, or do some
combination with several flashes.

  So a flash meter would still be useful.

Greg E.



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