Canon's wireless flash system

[bjornholland]

Hi,

 

I've done a bit of research on this. Just wondering if I get it all right...

With a ST-E2 and a recent flash (550EX), can I...

 

- flash remotely with full E-TTL support (even with off-camera flash bounced

against a ceiling, or a lumiquest attached, i.e. the flash head not on standard

position)

 

- control the flash ratio from my camera/ST-E2

 

- flash remotely with full High Speed Sync

 

Thank you,

 

B. Holland

[thierry nguyen cuu - nomad]

I have 2 580EX and when using one as master and the other as slave, you can have full control of the slave from the master.

 

For more infos about the ST-E2 functionalities and control: http://www.bhphotovideo.com/bnh/controller/home?O=product.jsp&A=kitInfo&Q=&sku=164264&is=REG

 

According to BHphotovideo.com you can do all from your questions above.

[cham]

i have an st-e2 and a 580ex as well as a 550ex... and the answer is yes you can although the flash ratio control is only for A and B channels it doesn't support anything else... but it works really well and is really useful in lowlight situations because of the AF assist light

[eosdoc]

<OL>

<LI>Whether you get remote E-TTL or E-TTL II depends on

the camera body you use.

<LI>Flash ratio implies more than one light source.

You can use <code>Exposure Compensation</code> and

<code>Flash Exposure Compensation</code> to balance flash

and ambient light, provided that your camera body supports

this. Balancing light from multiple Speedlites can be

achieved reliably with manual fixed-power settings. You

could use auto-power settings but only with some EOS

camera bodies.

<LI>Remote High Speed Sync is possible, but not second

curtain sync. At least, not easily.

</OL>

Refer to:<BR>

<a target=loser href=

http://eosdoc.com/manuals?q=ETTLDx

>http://eosdoc.com/manuals?q=ETTLDx</a><BR>

<a target=loser href=

http://eosdoc.com/manuals?q=ETTLRx

>http://eosdoc.com/manuals?q=ETTLRx</a>