On Sat, 22 Mar 2003 12:08:00 -0500, you wrote:

>> Can someone compare the A 2x-L, A 2x-S and the Takumar-A 2x for me
>> pls?
>
>The A 2X-L is worth using (as compared to the A 2X-S), if you have a
>lens that it will work with.  The A 2X-S is a good TC for the
>majority of lenses, but I would say that the K T6-2X is nearly as
>good (except it does not have A electrical contacts, of course, if
>that's a factor for you), and it's more compact (almost as small as
>the A 1.4X-S).  The Tak-A 2X is a lesser TC, without SMC and with a
>simpler optical design.
>
>> They're all junk. Expensive junk. In the case of the 2X-L, the
>> best 2x junk available for Pentax big glass. But still junk.
>
>Yes, I hear you, John (a.k.a. "Mr. NoCompromise").  ;-)
>
>Fred

Actually, I wasn't being terribly serious about every 2x TC being
junk.  They're not all junk - they're just irrelevant. There's lots of
better ways to get that tiny bit of extra focal length over a good
quality 1.4x TC.

I don't think every 2x TC is by nature the worst thing ever added to a
lens, despite my tongue-in-cheek claim they are all junk. In fact, I
have taken many opportunities to extol the virtues of the Vivitar 2x
Macro Focusing Teleconverter. I also think the Pentax 2x-L is a
must-have item for anyone using the FA* 600/4 - but at least one owner
of that fine lens disagrees with me.

It's just that with a 2x TC, you never can depend on getting a really
sharp photo, except at close distances, in which case you probably
didn't need the 2x TC anyway. 

You're much better off spending the money on a longer lens, or
learning how to get closer, or learning to predict where the subject
will be.

For all those who still need a 2x TC, take two steps forward, and call
me in the morning.

--
John Mustarde
www.photolin.com

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