Thanks - I already have the 100. I'll be testing it with a 2x converter (Kiron MC-7) this weekend, but I don't have high hopes for sharpness with the TC. The lens alone is wonderfully sharp.
----- Original Message ---- From: Tim Bray <[email protected]> To: Pentax-Discuss Mail List <[email protected]> Sent: Thu, June 9, 2011 10:37:39 PM Subject: Re: Sigma 150mm macro lens Well, I recently got a good deal on a Pentax DFA-100 macro because there's the new WR variant. I bet if you hit a few Pentax dealers there'll be a few more of them out there. Mind you, it sounds like you're looking for more than 100mm. -T On Thu, Jun 9, 2011 at 7:28 PM, Mark Cassino <[email protected]> wrote: > Hi Everyone - > > It finally happened - my trusty old SMC A* 200mm macro developed a problem this > past weekend, and there is clearly an issue in the linkage between the arm that > controls the aperture and the aperture mechanism itself. I sent it off to >Pentax > > in hopes that they can get it fixed up, and hopefully they can. But I may as > well do some contingency planning as I await to hear form them... > > The only viable option I see out there now is the Sigma 150mm f2.8 macro. Has > anyone tried this lens? They state that it has a minimum focusing distance of >15 > > inches which is 1:1 magnification. So, minus the length of the lens (5 inches) > it looks like there would be about 10 inches of working room. That's not bad - > the 200mm macro hit about 12 inches of working room at 1:1. The D-FA 100 only > has about 6 inches. > > Any thoughts about other options? The Sigma 180mm macro is long gone and the A* > and FA* 200 macros are impossible to find. I just started playing around with >my > A* > > 300 f4 and a Canon 500D multi element close up lens - the first test were > surprisingly sharp, but the range you can focus in is very small and the >maximum > > magnification is only about .65 life-size. I plan on trying the D-FA 100 with > a teleconverter this weekend, but am not optimistic. > > > Any thoughts on the Sigma 150 or other options that might be out there? > > Thanks - > > MCC > > www.markcassino.com/b2evolution/ > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow >the directions. > -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
