SF-20 Flash Question

[richard_fulco2]

When using the SF-20 flash unit, I sometimes see both a 'flash ready' indicator as well as a red '>' LED. Can I disregard the red '>' LED which advises me to use a wider aperture or slower shutter speed (<1/50 sec) than the ones I've selected? (Assume my subject is indeed, within the range indicated on the LCD on the back of the camera.)TIA.

[john_molloy3]

yes. i want to know the answer to this too.

[jay_.]

Once a TTL flash has been activated in the shoe the ambient metering

is cancelled and the diode indication is irrelevant.

[rolo]

"Once a TTL flash has been activated in the shoe the ambient

metering is cancelled and the diode indication is irrelevant. "

 

<p>

 

On which camera? On an M6TTL with a Metz 54-MZ3 in TTL

mode the flash does not affect the camera's ambient light meter

reading at all. Why would it?

[jackflesher]

Richard:

 

<p>

 

The ">" is telling you what direction (wider in this case) you need

to turn the aperture ring for a correct AMBIENT exposure -- the TTL

flash exposure will be corrected automatically at the point of

exposure. This is actually of bennefit to help you in balancing your

flash exposure to the ambient exposure (where possible and if you

should decide to do so), but is not required for accurate flash

exposure.

 

<p>

 

The confusion in some of the above responses may be the fact that the

M6TTL will only fire the flash if its shutter speed is set to 1/50th

or slower. Over 1/50th, the flash circuitry is autmatically shut

off.

 

<p>

 

Cheers,