Digital BW, The Print

I think ETTL-II only works with the 20D, 1Ds II, and 1 D II. The primary new
contribution with ETTL-II is not related to the sensor. It is that lens
focus distance info is now used, in combination with other info, to
determine the flash exposure, as it has been for years on the Nikon. Nikon
had a patent on that technology, and I heard it ran up, but this info is
third hand. I believe only the three cameras I mentioned support ETTL-II.

Does anyone have any more info on this?

Steve
----- Original Message ----- 
From: "Tony Bonanno" <tony@...>
To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
Sent: Friday, November 19, 2004 11:52 PM
Subject: [Digital BW] Re: Canon 1Ds MK II




Hi Richard,

I don't think you will see any difference between a 550EX and a
580EX on the 1DsMKII.  The 550EX I believe was designed with the
standard "35mm" frame in mind, and works well with ETTL-II.  The
ETTL-II is built into the camera, not the flash.  With the 580EX,
there have been several design changes such as a rotary wheel
control, slightly more power, etc., but basic flash function is not
much different than 550EX other than factoring in sensor size when
used on ETTL-II cameras (currently 20D, 1DMKII and 1DsMKII).  I'll
know more when I actually have the 580EX and can compare it with the
550EX.

Tony Bonanno

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Richard"
<richard@r...> wrote:
> But will a 580EX  show any improvement over a 550EX when used with
a 1Ds?
>
> In other words is the ETTL-II a function of the 1DsII or the
actual 580EX
> Flash unit.
>
> If it is the flash unit will it detect the sensor size on a 1Ds
>
> Richard
>
> -----Original Message-----
> From: Tony Bonanno [mailto:tony@y...]
> Sent: Friday, November 19, 2004 8:34 PM
> To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Subject: [Digital BW] Re: Canon 1Ds MK II
>
>
>
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, Steve Kale
> <stevekale@b...> wrote:
> > Does sound like I should update my flash (430EZ).
> >
>
>
> Sam, Richard, Steve,
>
> Steve, regarding your flash, yes, to take advantage of the ETTL-
II,
> I'm pretty sure you'll want one of the EX series flash units.  It
> will be backwards compatible with your older Canon bodies.  Any of
> the EX flash units should work fine.
>
> The 70-200 2.8L and 28-70L lenses are fine glass and there is
> absolutlely no reason why you would need to replace them.
>
> The full size sensor with 16MP does seem to challenge the wide
> glass.  There are already reports coming in that even the Canon 16-
> 35L is producing some weird results shooting wide on the 1DsMII.
> There are lots of theories as to why this is the case (angle that
> light hits the pixels, etc).  Canon did some serious redesign of
the
> pixel shape and microlenses to try to minimze these problems.  I
> think the jury is still out on this issue.  If I was going to buy
a
> wide L lense for the 1DMKII today, it would be the 17-40 f/4 L.
In
> my opinion, probably the best "L" wide "zoom" that Canon has
> produced, although admittedly not as fast as the 2.8 lenses.
>
> I'm still waiting for my rep to ship the 580EX.  Have used two
550EX
> with the ETTL-II on my 1DMKII.  Difference from the old ETTL is
> dramatic.  ETTL-II doesn't depend on focus point for exposure and
> actually reads exposure from multiple samples on sensor and
> calculates distance into algorithm for most EF lenses.  Is much
more
> consistent than the old flash.  Doesn't get nearly as confused
when
> lots of white or black in frame (major issue for wedding
photogs.).
> The new 580 has the added benefit of factoring in the "sensor
size"
> to optimize flash exposure further.  It will know if you are
> shooting with an 20D (APS sensor), a 1DMKII (1.3x), or a 1DsMKII
> (full size sensor).  Hoping to have my 580EX (and my 1DsMKII)
early
> next week.
>
> Cheers,
>
> Tony Bonanno
>
>
>
>
>
>
>
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Please follow these basic guidelines:
- As threads develop, trim off excess portions of earlier messages to keep
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Hostile, aggressive or argumentative users may be removed from the
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