>From: [EMAIL PROTECTED]
>
> >If I am looking to get a good focal length for birds and want very good,
>but
> >not pro results, what is likely to better do the job..the 100-300 f5.6L
>plus
> >a Kenko Pro 1.4x teleconverter or a Sigma 170-500 f5-6.3 APO aspherical?
>
> 100~300/5.6 + 1.4 = 140~420 f/8.
> The f/8 could be an issue.
> - --
> regards,
> Henry Posner>>>
>
>
>Is that because the Elan 7 won't autofocus, because the image would be dim
>to manual focus on or both. The more I read, it seems like there are no
>really good solutions for my price range. Some of the more objective
>reviews of the Sigma 170-500 were not so great so I am hesitent to get it.
>KEH has some 400 5.6L for about $850 (which is pushing it a bit) but then I
>would run into the same f stop problem if I added a teleconverter and I am
>worried that even were I to stick at 400 I might be a bit disaapointed
>trying to get bird shots that fill the frame or even frame filling animal
>shots at the zoo.
>
>Sounds like no great solutions here.
>
>Howard
Hi Howard!
Third party converters don't report correct f stop to the camera so it will
try to focus anyway. I tried 2x converter with 80-200 f4.5-5.6 on EOS 500
and it did AF and lock on eaven at ~f11.
If you have a chance try it out, should help you decide.
Good light
Grega _____________
http://fenko.8m.com
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