Do I need a flash for my new EOS 40D ? or is the built in unit enough ? and any recommendations if I do need one ?

What kind of photography do you shoot? If you could be a bit more specific, that'd help us to help you.

Well stuff like my Daughters concert at school and my son indoor soccer games .

Those pop up flashes really don't offer much as far as power or versatility. I'd definitely recommend a good Canon flash.

Any recommendations ?

Your instruction manual should tell you which flashes work for your camera. If the 40D requirements is the same as the 30D, you basically have 2 choices, the 430EX or 580EX. For the difference in money, the 430 should serve you well.

Thank you .

go with the 580ex from the start, yes it is more $ but you won't worry about it in the long run.
Jimmy B

I bought the 430 first then the 580 EX II. The 580 is well worth the extra money. If you can afford the difference, buy the 580



Reggie

Besides power, what would the advantage be for getting the 580? I bought my flash just for fill flash on birds. I'm sure the 430 is all I'll ever need. Indoors must have it's own challenges to warrant that much moolah for a flash.

What about the 550EX, I am looking to buy a flash also.....

I don't own the 550 but I got the 580 and it a one darn good one. sometime I have to use 1/2 power to shoot a small groups shoot outdoor fill and if you want quick cycle time get you the canon external battery pack.