High Speed Sync Problems

SeedyBee said:
Agreed - but as a diagnostic step it revealed definitively that the camera was not recognising the C-TX. (And checking what is displayed can reveal other mis-settings.)
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Strange - holding down the two buttons to do some sort of reset seems to have done the trick. I'm getting a little green LED conformation light on top of the TX that I wasn't getting earlier as well.
 
danny_bhoy said:
Cleaned contacts on body and TX, made sure it's properly mounted and still no joy.
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If when you try to see the external flash control menu on your 5DII is says "Not available" or something similar, then your C-TX is NOT properly mounted. Nothing else matters until this is fixed.

I can dial in any shutter speed I like then when I half press the shutter button it reverts to 1/200. If I change modes (say from M to AV) and back again I can then crank the shutter speed right up but reverts back upon a half press of the shutter button.
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Half-shutter makes the camera go through its ID and setup routines, at which stage, as it is UNABLE to communicate fully with the mounted device, it reverts to non-HSS state.
 
danny_bhoy said:
Surely if I have the camera in manual, flashes set to manual (rather than ETTL) then I should be able to shoot at any shutter speed.
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It is not how Canon cameras are programmed to work. Especially if the camera tells you it cannot communicate with the mounted device. (A micro-switch in the shoe tells it "something" is there.
 
SeedyBee said:
It is not how Canon cameras are programmed to work. Especially if the camera tells you it cannot communicate with the mounted device. (A micro-switch in the shoe tells it "something" is there.
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Clive, had you seen that following a reset the problem is solved?
 
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