M.J.Shupe wrote:
now that the furor has died down over the 300/4 IS, I have a question
regarding mine. I want to pick up a 1.4x converter but I don't want to
spend the $$ for the canon. I have heard good things about the Kenko
and the Tamron Pro (I think), but I know that the Kenko is supposed to
make the 300/4 IS not autofocus (I have seen this caution in various
places, I believe including Kenko's website).
So the Kenko is out. My question is, does the good Tamron 1.4x
converter also cause the 300/4 IS to lose autofocus capability or is it
just the Kenko that does this?
Has anyone used the Kenko with the 300/4 IS and *not* had a problem
autofocusing, despite Kenko's warnings?
Thanks very much,
_______________________________________________________________
Mike,
The Tamron SP PRo 1.4x TC functions as the Canon EF 1.4x does.
Depending on camera used, it will change the AF use.
Example, I use an EOS-3. When I use the Tamron 1.4x with my
100-400mm IS L lens, it will only permit me use of the center AF
point and not allow ECF since the combo creates an F5.6-F8 aperture.
Peter K
*
****
*******
***********************************************************
* For list instructions, including unsubscribe, see:
* http://www.a1.nl/phomepag/markerink/eos_list.htm
***********************************************************
