> I have offers on EOS 3 body and EOS 1N body, both with boosters.
> EOS3 being significantly more expensive than EOS 1N.
>
> I don't do much of a flash photography, sometimes I use my 380EX as
> fill flash, or in low light I use it as main light source. However,
> when I buy EOS 1N I'm affraid I will grow and will do more
> portraits and flash photos so I'm affraid of and old-fashioned
> (if I may call it this way) a-ttl flash control.
>
> The Question: Are the differences between attl and ettl so
> significant? I understand it cannot be stated in a concrete way,
> I'd appreciate your personal experiences with both and the
> judgement will be on me.
Consider 3 flash metering "types": TTL, A-TTL, and E-TTL
E-TTL (arguably the best), meters a **preflash** through the lens using
the "normal" ambient light meter(s). E-TTL offers additional advanced
features, such as high-speed sync, FEL and wireless multi-flash. Only
available with "EX" speedlites and newer, A-type bodies (and digital
bodies).
TTL (common most manufacturers), meters the flash **during exposure** by
measuring light reflected off the film. Its old technology, but fairly
accurate for centered subjects. Its available on all EOS film bodies
(not digital bodies), with all EOS speedlites.
A-TTL is an expansion on TTL, where a preflash is measured **by the
speedlite**. The camera and speedlite then conspire to set the
aperture, based on subject reflectivity and ambient lighing. The actual
flash exposure is determined **during exposure** by measuring light
reflected off the film (same as TTL). A-TTL is available only with "EZ"
speedlites and older B-type bodies.
IMHO, unless you need high-speed sync, FEL or wireless multi-flash, or
use a digital body, either TTL or E-TTL will do nicely.
--
Dave Herzstein
[EMAIL PROTECTED]
http://www.kjsl.com/~dave
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