[EMAIL PROTECTED] wrote:
>
> I am considering purchasing a Better Beamer for flash with a Canon 300mm lens
> and an Elan 7. What would happen if I used my 420 EX for fill flash without
> the Better Beamer? Would there be interference with the flash light pattern
> from the lens with the flash mounted on the hot shoe. Does the Better Beamer
> just throw the light further or is the pattern also changed so that the lens
> does not interfere? How effective would a 420EX without the Better Beamer be
> with a 300mm. I realize this depends on how far you are from the
> subject.....so lets just take two examples, say 10 feet which would be within
> the usual flash distance without a telephoto and 30 feet which would be
> beyond the usual distance for flash (but would it be beyond the usual
> distance for fill flash)?
>
> While on the subject, if using the flash for just fill do folks usually apply
> negative FEC or is the camera usually do a good exposure job on its own?
>
> Howard
The Better Beamer narrows the beam and extends the beam approx. 1 (one)
stop. If you use a lens shorter than 300mm, the image will look like
someone is shining a flashlight (bright in the center and darker on the
outside edges). I stress that you only gain 1 stop. I have both the
Better Beamer and Tory Lepp's Flash Extender and they both only help 1
stop. I think their claim of a 3 stop increase requires you to stand in
a long hallway with all the walls, floors and ceilings were painted
white. I have tested with my Sekonic 508 flash meter with the
assistance of two professional shooters.
Ray Amos
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