Hi Miha,

Nice to hear from you.

On 5/11/07, Valencic Miha <[EMAIL PROTECTED]> wrote:
Gerard, did you try this with another flash unit? And, does it happen
with 1/100 and 1/50 speeds as well? I have a Sigma 500, and I can try
with that one.

Before jumping to conclusions, I did many tests:

5D+ST-E2+580EX
5D+550EX(master)+580EX(slave)
5D+580EX(master)+550EX(slave)
5D+580EX - on camera

All different setups show the same behaviou: FP active at Xsync speed
of 1/200 (xsync) when the FP feature is active on the flash (see
following table for the shutter speed tests I did)

Regarding shutter speed, I also did different test

Setup EOS5D +  ST-E2 +  580EX

1/160 + FP = NO FP (expected behavior)
1/160 + NO FP = NO FP (expected behavior)

1/200 + FP = FP ***UNEXPECTED BEHAVIOUR*** = BUG!!!
1/200 + NO FP = NO FP (expected behaviour)

1/250 + FP = FP (expected behaviour)
1/250 + NO FP = not possible in ETTL mode (shutter speed won't go
beyond xsync when a flash is attached and FP is not active)

I repeated the test on the EOS10D that I have as backup

Setup EOS 10D +  ST-E2 +  580EX

1/160 + FP = NO FP (expected behavior)
1/160 + NO FP = NO FP (expected behavior)

1/200 + FP = NO FP (expected behavior = no bug)
1/200 + NO FP = NO FP (expected behaviour)

1/250 + FP = FP (expected behaviour)

And yes, I appreciate if you could repeat the test. Do you own an EOS
5D? Also a tests with another body (like a 20D, 30D & 1D are
appreciated to narrow the scope down to the 5D, or even to my own
body)

greetz,

Gerard.
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