I rarely use anything longer than 135mm, but for those unusual  
occasions when i need longer I have both a 2x-S rear converter (270mm  
f/5.6 with the 135) and an F100-300/4.5-5.6 that fill in. The latter  
is pretty crappy wide open but stopped down two/three stops performs  
very well.

The 135+2x-S does very well at f/8-f/11.

G

On Dec 4, 2006, at 8:41 AM, Doug Brewer wrote:

> This morning I came up against my lack of telephoto power, so I'm
> looking at KEH for affordable options.
>
> I'm considering either the M200/4 or the M300/4 as possibilities,  
> and am
> fishing for opinions on them from owners/users.
>
> Thanks in advance.


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