Ken Durling wrote:
Ok, this may be a naive question, but E-TTL measures reflected light
intensity - given the inverse square law, doesn't that amount to
distance information? Seems the problem most people are having,
though, is when *multiple" distances are involved. How is it possible
for Nikon's, or anybody's system, to make calcualtions based on
numerous fore, middle, and background targets?
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But that assumes that the reflected reading is correct, something that would
no be the case in the example of a white wedding gown. Therefore, Nikon
opted to include distance in their calculation. They include the flash
Guide Number and a preflash reading which provides a very accurate
calculation of flash output.
With Canon's E-TTL I would have to say that the systems are closer than
before.
Minolta has a similar system to the Nikon and will certainly give Nikon a
run for their money in terms of accurate flash output.
Peter K
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