At the long end I didn't find AF a problem even with the E-1 shot indoor,
the problem was focus shift at the mid to wide end. I seldom shot at F2.8
with the 14-54 for the party events I took for my company, it was always F4
to F5.6. But it doesn't mean I was happy with F2.8-3.5, it should be a F2.8
constant as we had trade off for a small sensor and its price was not cheap!
C.H.Ling
----- Original Message -----
From: "Chuck Norcutt"
> You're correct. As long as the aperture is set to the smallest wide
> open aperture (3.5 for the 14-54) the aperture will not change as you
> zoom. However, since the lens is physically only capable of f/3.5 at
> the long end you'll be missing out on 2/3 stop of light that you would
> have had if the lens was a constant f/2.8. That additional light is a
> big help to the autofocus in dim light even if the exposure will be made
> at a smaller aperture.
>
> Chuck Norcutt
>
>
> jgettis81@xxxxxxxxxxxxx wrote:
>> Just a couple of questions on how the 14-54 lens works. If I have it set
>> at 3.5 or above does not the aperture stay the same? So if I am using it
>> on manual it won't matter what the lens opening is. as long as it is 3.5
>> or greater and of course be the correct exposure. John Getti
--
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