I'm curious, how do you get a 150/2.8 unless you have something faster than
a 100/2.8. The 1.5 should lose you some light. I can never do the math,
but I know a 2x converter turns a 100/2.8 into a 200/5.6, so I would expect
the 1.5x to turn a 100/2.8 into about a 150/4.
This has always confused me, so....
Tom
> I got a A-200 1.5x teleconverter off of eBay for 35$, NIB yesterday. I
tried
> it out and yes, it does vignette on the 50mm, and it gets worse as you
stop
> down. But, I guess if you plan on cropping, it makes a dandy 75mm/f1.4
lens!
> It seems to work fine on the 100/2.8. I noticed that the closest focusing
> point was much farther out with the teleconverter in place. I guess it
would
> be 1.5x also? It's small and light enough to join my "walk about" kit of
24,
> 50, and 100mm lenses, giving me a 150/2.8 also. Neat toy!
>
> --
> Be Seeing You.
> Dirk Wright
>
>
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