My FA 135 is an interesting lens with a DX sensor.  Too short for
nature but nice for the MC races at VIR.



On Wed, Apr 14, 2010 at 8:09 PM, Doug Franklin
<jehosep...@mindspring.com> wrote:
> On 2010-04-14 19:29, Graydon wrote:
>
>> Pentax no longer sells anything longer than 300, and while I have both
>> 500 and 800 mm mirror lenses, it's going to be quite awhile until I can
>> contemplate hunting down an A* 400/2.8.
>
> Look for the Sigma APO 400mm f/4.5 Macro, for a much more cost conscious
> option.  It's a very good lens, though not as good as the FA* 200/2.8 or F*
> 300/4.5 ... but those are well nigh legendary lenses I'm comparing it to.
>  The Sigma has built in, slide out hood and tripod foot, focuses down to
> about 3m, and has a limit switch.
>
> The thing I like best about it is the AF/MF switch, though.  Lots of lenses
> have them, but not all of them really act like it.  Like my F* 300/4.5 has
> an AF/MF switch.  However, when I put the Sigma in MF mode, trap focus
> works, but not with the F* 300/4.5 in MF mode.
>
> I was lucky enough to get the Sigma 400 for US$500 right after it was
> discontinued maybe five years ago.  I haven't researched their used prices.
>  Though I'd love to have the FA 400/5.6 or, better yet, the FA* 400/2.8 (or
> F*?), I can't justify the cost for the amount I'd use it. I'd like to have
> the FA* 300/2.8, but the same logic applies.
>
> --
> Thanks,
> DougF (KG4LMZ)
>
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-- 
Steve Desjardins

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