steve harley wrote: >On 2011-04-05 18:21 , Mark Roberts wrote: >> Non-Lightroom compatible, but here it is: >> http://www.robertstech.com/blog/?p=222 > >interesting technique, and thanks for sharing, but it doesn't seem >intuitive that spherical aberration alone can describe soft focus > >a thought experiment: if you aimed a soft-focus lens at just the right >concave surface, would everything be sharp? i think there'd still be >more going on
If you had a lens that was perfect in every regard *except* spherical aberration and aimed it at a concave surface (of precisely the right curvature) everything would be sharp. This doesn't strike me as an experiment that's practical in real life, though. ;-) So, yes, there's more going on. -- Mark Roberts - Photography & Multimedia www.robertstech.com -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
