Lucky_Dog
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Buy and Sell: On
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 p.2 #2 · Camera mode for receptions | |
Tv probably seems like eTTL is acting as main light because the speed of the lens is much more limiting than shutter speed would be in Av. In Av you might end up at 1/4 second and the flash will act as fill just like you would expect it to. In TV, if you limit the shutter to, say, 1/50 and you only have a 2.8 or whatever lens, the flash will try to make a correct exposure. I didn't research... this is just my guess.
As for the original question, I use M 97.3547% of the time. I use Av occasionally when outdoors and things are changing fast, but I really try not to, because my results tend to vary more than I like.... and I'm not a fan of using the exposure lock button. Av tends to not be good with the white and/or black extremes that we shoot at weddings, IMO.
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