Sigma 500 Super Flash

[phili1]

Has anyone used the Sigma 500 Super Flash. I just read the specs and it is almost equal to the Canon 55o ex and the price is $199 verses $299. They say it works with the Ettl 20D system as well.

[OviV]

I have 2 of them and they work very well. Keep in mind that they do not have the port for an external battery pack like the 550 ex in case that is important to you.

[phili1]

Thanks. I originally had a 540Ez but it will not work with my 20D, so I bought the 420Ex but it is limited. I really would like to get the 580Ex but the price is way to high. The Sigma will save me $100 which is money towars an extender.