430EX question

[beng07]

Hi all,
I have just bought a new 430EX but wondering that why the zoom focal length doesn't automatically be display on the flash LCD when press the shutter button halfway to focus the object. Is there any way to turn it on? I'm using 400D with 24-105L IS.

Thanks,

[JediForce4ever]

Perhaps because your flash head zoom is accidentaly set to manual zoom.
Switch to auto and it should be fine.

[beng07]

Originally Posted by JediForce4ever Perhaps because your flash head zoom is accidentaly set to manual zoom. Switch to auto and it should be fine.

Thanks, but I'm sure that it wasn't set to manual zoom as no "M" icon displayed on LCD.

[raptor84]

Did you mount the flash tightly? I had issues when it was loose before. Does the fresnel lens inside move or is it totaly unchanging?

[beng07]

I found the cause now. The head flash need to be adjusted straight to same way as lens so I can see it now. Thanks,

[calebk]

Originally Posted by beng07 I found the cause now. The head flash need to be adjusted straight to same way as lens so I can see it now. Thanks,

Correct. If it is in any other orientation other than straight ahead, the zoom info will not be displayed unless you override with manual zoom.

[buabua]

Hi pple one question abt 430EX

So when we use it to bounce flash or place the flash at a angle

all the ETTL will not be functioning?

thanks

[Adelfin]

Originally Posted by buabua Hi pple one question abt 430EX So when we use it to bounce flash or place the flash at a angle all the ETTL will not be functioning? thanks

E-TTL II is not equal to zooming... Here's the EOS Flash Bible to tell you more...

basically what E-TTL II does is to fire a pre-flash when you press the shutter button, calculate the appropriate exposure and fire the actual flash after.. Usually you won't notice it unless u are using 2nd curtain sync, coz the pre-flash is fired at the split second before the shutter opens...

zooming is just used to save power.. The longer the focal length, the narrower the angle of view.. Therefore there is no need to cover the angle of view of a 24mm lens, when maybe u're using a 80mm focal length.. zooming allows more light to be focused forward, providing more power ==> higher efficiency, save battery..

The reason y zooming isn't switched on when bouncing is because the angle/height of bounce affects the area that will be lit up.. the angle of spread of the flash will no longer be the same as what would be used normally. So to play safe, the flash will select the widest setting, unless u choose to select urself manually..

[buabua]

ar ok.. thanks for enlightening me.

[garylaihk]

Great explaination! Thanks