IMHO, autofocus on a macro lens is ridiculous. The greatest value in macro lenses that I have seen is the Tamron SP 90mm f2.5 (either 52B or 52BB). WHAT a lens for very little money. You'll need the matched Tamron converter (or any good 7 element macro converter) to reach 1:1. Alternately, use an extension tube.
You'll find sample photos here: http://www.google.com/search?q=Tamron+90mm+f2.5+macro+site%3Apbase.com Darren Addy Kearney, NE On Thu, Apr 29, 2010 at 5:44 AM, John Whittingham <[email protected]> wrote: >> Sigma 105 f2.8 EX macro. Very sharp. Quite well built. Nice wide >> focusing ring making it nice to use. Very harsh bokeh which really >> annoyed me. No quick shift focusing. > > I'd totally agree with these comments, the harsh bokeh is a real negative > with the Sigma. I eventually sold mine and bought the Tamron 90mm f/2.8 Di > and I'm very happy with the results. The only pentax Macro I've owned was the > M 50/4 which was a good lens but a little dated and rather slow aperture > wise. I think the only real alternative to the DFA 100/2.8 would be the > Tamron IMHO > > John > > -- > 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. > -- "The camera is an instrument that teaches people how to see without a camera." ~ Dorothea Lange "98% of all cameras and lenses are sharper than 99% of all photographers." ~ Anonymous -- 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.
