Flash recommendations

Discussion in 'Photography Equipment & Products' started by lkWinnipesaukee, May 13, 2007.

  1. lkWinnipesaukee

    lkWinnipesaukee TPF Noob!

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    Hey guys,

    I'm looking for a flash for my Rebel XT. I was thinking either a 430EX or something made by Sigma or another third party that is around the same price.

    I don't plan to use the flash for anything with slaves or whatnot--just a standalone
    flash for shooting people in dark areas or as a fill flash.

    What are the advantages and disadvantages of using a Canon or third party flash?

    Also, what does something like "90' @ ISO100" mean?


    Thanks.
     
  2. burtharrris

    burtharrris TPF Noob!

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    Canon flashes on a Canon camera have a thing called E-TTL, which is a through-the-lens metering system. In other words, it takes your exposure plus your focusing distance plus everything else.... long story short it does it all for you. This is called a dedicated flash. Off-brand flashes might not have this capability.

    And as for guide numbers, 90' is a indication of power. Divide the guide number by the distance to the subject (feet) and this gives you the aperture to use. E-TTL flashes calculate this for you without doing anything.

    90' (GN) divided by 22 feet away = f/4.0, roughly.
     
  3. Big Mike

    Big Mike I am Big, I am Mike Staff Member Supporting Member

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    The 430EX is a great flash and would be a good match for that camera. There are 3rd party flashes that do work with Canon's E-TTL metering, so you can get the same benefits as the Canon brand flash.

    The Sigma 500 Super, is said to be a pretty good flash. It's more powerful than the 430EX, for around the same price.

    The best flash would be the 580EX but it's rather expensive.
     

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