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Thread: Questions on ETTL flash

  1. #1

    Default Questions on ETTL flash

    Hi,

    I just got a Sigma EF500 Super and got some queries on using a ETTL flash.

    (a) When I do bounce-flash (ceiling bounce or card bounce), do I have to compensate the flash positively? Or will the ETTL system automatically compensate for me?

    (b) When I want to do fill-flash (in Av mode), should I compensate the flash negatively? Or again, will the ETTL system automatically compensate? I remember in many of the zoo shots, fill flash was set at -1 compensation. Is this value of -1 a rule of thumb, or must it be determined by experience?

    thanks for any replies!

  2. #2
    Senior Member
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    erm I think best to shoot a roll...
    ETTL uses preflash to meter so I think probably no need to compensate...
    but again might depend on your 300's metering decisions...
    "I'm... dreaming... of a wide... angle~
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  3. #3
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    a) ETTL will handle it well

    b) tried on a G2 and ETTL works fine without compensation (people backed by a bright background)
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  4. #4
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    http://photonotes.org/articles/eos-flash

    This link teach you how to use flash properly with canon system

    Thanks Red Dawn for the link, it is so useful that i printed it out this 80+ pages long articles
    We are HDD of PC & FT are MB add to storage;
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