I tripped across my Olympus IS/L A-Life Size Macro H.Q. Converter f=13cm last night. I haven't done a lot with it since getting it with an Olympus film kit (purchased for around $25 just to get the Olympus converters). This is one of the most sought after and hard-to-find acchromats and is made up of three optical elements that provide +7.7 diopters of correction (while reducing CA and spherical aberations)
Anyway, I realized that its 49mm filter thread would make it perfect to try on my Limiteds. So here is a quick set showing the close focusing/shallow DOF of it on the 43mm f1.9 Limited. I've got one image in there also showing the DOF difference between f/1.9 and f/11. https://www.flickr.com/photos/pixelsmithy/sets/72157648726869113/ More info on the Olympus IS/L A-Life Size Macro H.Q. Converter f=13cm (and achromats, in general) for those interested http://www.angelfire.com/planet/seemolf/achromats.html https://www.flickr.com/photos/pixelsmithy/7129383309/ http://fuzzcraft.com/achromats.html https://ohse.de/uwe/articles/oly-converters.html Plan to try it on the 77mm f1.8 also, and then the Uniplus-25 extension tube with both as well. I'm sort of looking forward to spring and the greenhouses opening up so I can give these concepts a workout with more aestethically pleasing subjects. -- Life is too short to put up with bad bokeh. -- 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.
