550EX inconsistency with 10D

[Peter_AUS]

What have you got the 550EX set to with the switches.

[Sean Dempsey]

Try this:

go to your custom fuctions, and go to function 14, the Auto Reduction of Flash Fill. Disable that.

That set, the camera will not mess with flash exposure compensation, you can now set it with the 550ex and it should be consistent each time.

If this doesn't make any changes, I am stumped. But for me, when I disable that in the camera, and then set my flash exposure compensator where I want it, I get good results.

[michaelhacker]

Thanks Sean, but I have already done that. I have heard to just trash the 550EX and switch to metz. I like Metz, I use them with my Mamiya's and results are fine.

-MH

[Sebastian]

Thanks Sean, but I have already done that. I have heard to just trash the 550EX and switch to metz. I like Metz, I use them with my Mamiya's and results are fine.

-MH

Try what I suggested before you ditch the 550. Once you get the hang of how it works, and why it does what it does, you will get excellent results. I get excellent results with the setup. Try it, you'll like it... ;)

[michaelhacker]

Thanks Peter;

All is set to program with the flash on ETTL. I have also tried manual.. ie; camera at a 30th sec, and f11. Flash indicates f stop correctly, but results still wildly off.

-MH