On Tue, 16 Dec 2003, Joseph Tainter wrote:
> Can someone who owns the AF360FGZ confirm that P-TTL has given you
> better exposures than ordinary TTL?

P-TTL uses matrix metering, so in theory, it should give better results
when center weighted metering could be fooled.  And in case of *ist, it
can give priority in the matrix metering area corresponding to the focal
point.  Off centered subjects is one example where P-TTL should be better.

Other reasons for P-TTL: multiple wireless TTL flash, high-speed sync
TTL flash and flash exposure compensation.


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