Working with F4 lenses in good light makes sense to me.  I would also
guess that this is camera limited.  We know that different models
focus better in low light than others.

On 9/1/07, P. J. Alling <[EMAIL PROTECTED]> wrote:
> This was taken with the A*300mm f4.0 and F 1.7x converter. It wasn't the
> brightest day, (conditions were somewhere between "cloudy bright" and
> overcast, I've found that the 1.7x auto focuses nicely with lenses with
> maximum apertures down to f4.0 under most conditions.
> (it's really hard to get good exposures of these birds in bright sunlight).
>
>

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