Larry,
Didn't you ask this question once before?
You won't get a different answer this time.
You won't get satisfactory macro pictures with a TC,
and you cant turn any of your existing lenses into a 100mm macro.
A macro extension tube (clear tube, no glass)on the 77mm will get you something.
Your options are:
1) Old Pentax K or A 100mm f4 Macro - slow but only $100+.
(You might find an old screwmount Takumar, but still $100+)
2) 3rd party 100mm f2.5 or f2.8 Macro (Vivitar, Kiron, Lester Dine,...) $100+
(Folks argue, but most all the '70's -'80's Macros have good reps.)
3) Pentax A 100mm f2.8 Macro - very nice but $400+ (my favorite)
4) Pentax F or FA 100mm f2.8 Macro - same design(?) as #3 but autofocus - $400+
5) Latest Pentax D FA 100mm f2.8 Macro - $400+
6) Other exotic offerings like the Voightlander 125mm f2.5 Macro - $750+
Pick your poison. You want the 100mm working distance and 1 to 1
Macro magnifcation.
The extra speed of f2.8 is good too, so you can see what you're shooting.
But nobody is gonna sell you a $400+ lens for $50, and there's no way
around that.
Regards, Bob S.
On Sat, Feb 21, 2009 at 6:08 PM, Larry Colen <l...@red4est.com> wrote:
> I've got a DFA 50/2.8 macro and it works great. But, I find myself
> wanting the 100mm macro. I can't really justify shelling out the money
> for a new one right now. I see a few possibilities:
>
> Act like a grownup and just wait until I have the money.
>
> Put my macro focusing 2X TC on my PFA50/1.4 for a longer macro.
>
> Put my 1.4X TC on my FA 77 for 108mm f/2.5 portrait lens
>
> Sell my 50, and use the proceeds to buy a 100.
>
> Find someone selling the 100 used.
>
> Sell the 50 and buy a used 100.
>
> So, I just thought I'd check out the level of interest in the 50 and
> see if anyone as a 100 that they're thinking of selling.
>
>
> --
> Photographs are like sentences, the best ones have both subjects and verbs.
> Larry Colen l...@red4est.com http://www.red4est.com/lrc
>
>
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