----- Original Message -----
From: "Gerard Maas" <[EMAIL PROTECTED]>
Sent: Wednesday, July 04, 2007 10:20 PM
On 7/4/07, Don Weiss <[EMAIL PROTECTED]> wrote:
<<Peter K replied to Gerard Maas:>>
I've seen that in a few people, so I take several shots in succession of
the
same image. This way there will be some with and some without eyelids
shut.
If this is consistent and her eyes are always closed even with multiple
images taken, on a Canon 550EX or 580EX you can set change E-TTL to
A-TTL,
the previous method Canon used for flash exposure. This will only use one
flash (no pre-flash) and it is just as accurate in portraiture.
<<--------------------------------------->>
If Gerard is using a Digital SLR, A-TTL isn't available. It's an
Off-the-film technique, and doesn't work with digital sensors. Come to
think of it, A-TTL emits a pre-flash anyway.
Pure TTL would work, but only with film bodies because it too is an
O.T.F.
technique.
So the only options are fully manual flash, or as Adam Baker suggested,
FEL.
But that requires you to explain to the subjects(s) that the first flash
they see is only for "exposure setting purposes."
Some of the older Canon Speedlites may have self-contained exposure
setting
(like the classic Vivitar 283); not relying on the camera, except perhaps
for film speed and aperture information. But none of the newer ones,
such
as the EX series, have this.
I'm indeed using digital, and to make things more complex, most of the
time I use wireless E-TTL with multiple flashes which rules out using
FEL altogether.
It seems that manual flash is the only way. I also observed in the
images that when ambient light levels where higher, the eye-blinking
was reduced.
Are there any other alternatives?
Gerard,
In this case, it seems likely that your model is reacting to the pre-flash.
However, I've had the same problem, twice, using studio flash.
It transpired that these people were reacting to the sound of the camera,
i.e. the shutter charging and mirror raising. One person was fine with an
EOS-1n, but had 90% eyes closed/partially closed with an RZ!
Just a "maybe?".
Regards,
CraigZ
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