10D users ! - What's my flash problem?

[Sailare]

Hi,
I borrowed a friends 10D with a 28-135 USM IS lens for a couple of days and needless to say its fabulous. My 420Ex works fine on my G2 and when I zoom the lens the flash zooms accordingly.

When I put the 420EX on the 10D, the flash does not zoom when I zoom the lens. If I have the lens in the wide position and turn on both the light position indicates 28 or wide. If I turn it on with it zoomed out, the flash position light indicates 105. Nothing happens when I twist the zoom.

I have cleaned all the contacts and it's still the same. As a 10D novice, I am wondering if I need to turn something on or off in the custom setting or deactivate the IS or ??

thoughts and recommendations appreciated!!

Thanks

[Sailare]

Problems solved. User inexperience... All I needed to do was push the shutter button down half way once and it all springs into action. From then on it zooms in sync with the lens.

[DaveG]

Hi,
I borrowed a friends 10D with a 28-135 USM IS lens for a couple of days and needless to say its fabulous. My 420Ex works fine on my G2 and when I zoom the lens the flash zooms accordingly.

When I put the 420EX on the 10D, the flash does not zoom when I zoom the lens. If I have the lens in the wide position and turn on both the light position indicates 28 or wide. If I turn it on with it zoomed out, the flash position light indicates 105. Nothing happens when I twist the zoom.

I have cleaned all the contacts and it's still the same. As a 10D novice, I am wondering if I need to turn something on or off in the custom setting or deactivate the IS or ??

thoughts and recommendations appreciated!!

Thanks

I see that you fixed your problem but as a head's up notice I thought that I'd mention the following:

I use a 550EX flash with the remote cord 2 and usually all of this on a bracket. I kind of use the zoom feature of the lens to let me know that everything is hooked up and functioning well.

The flash has the tendency to back out of the remote cord hot shoe a tiny bit and this often comes at very inopportune times. When that happens the flash often fires but the exposure is way off (even by E-TTL standards :D). To do my test, I just zoom the lens and if the flash's head doesn't react and zoom too, then I know that there's something not quite right.

But my point, (and here it finally is) is that the flash head zoom doesn't work if you have the flash head tilted up in a bounce position. Canon want the flash beam to be as wide as possible when you are asking for a bounce and this is generally a good idea. This is covered in the instructions so we should all know this, but of course I didn't, and it created a moment or two of the "What's going on? This worked a minute ago!" thrill.

[scottbergerphoto]

It also won't zoom if the diffuser isn't placed all the way back into the 550EX or if it's in wireless flash mode.
Scott