On 5/30/2013 5:46 PM, Bob W wrote:
On 30 May 2013, at 18:53, Walt <ldott...@gmail.com> wrote:
So, I was wondering where I might be able to learn more about shooting manual
flash in the event the TTL function fails me -- something to give me an idea of
when to adjust the flash output power, at what distances, etc. I know nothing
about guide numbers, flash modes, or anything like that.
Anybody got any suggestions to that end? Any guidance would be appreciated.
The guide number tells you how powerful the flash. It's of no real consequence
in practical shooting.
To use flash manually,
0. Set the flash to manual
1. Set the ISO value on the scale on the flash
2. set the shutter speed to the flash sync speed, or lower
3. Measure the flash to subject distance - you should be able read this off the
focus scale, but if you're bouncing the flash use the distance from the flash
to the point on the ceiling, and double it.
4. On the flash scale, read off the correct aperture for the flash-subject
distance
5. Set that aperture on your camera
6. Focus and shoot
You can vary the flash output, eg for fill flash, by lying to it about the ISO.
Setting the shutter speed slower than the flash sync speed gives you a bit of
ambient light and some motion blur against the flash-frozen bit.
B
Thanks, Bob.
Although, strangely enough, there's no ISO scale on the flash as far as
I can tell. None of the function buttons on the back seems to bring up
any indicators. I'll have to do a little digging around to see if
there's something I'm missing.
Hmmm.
-- Walt
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