Bruce Walker <bruce.wal...@gmail.com> wrote: >Pentax literature points out how the final element of DA glass is >configured to direct the photons at right angles to the sensor to >compensate for the fact that the sensor is most sensitive to >perpendicular light. Film did not have this issue, hence FA glass (and >before) doesn't do this so the image will be fuzzier, especially off >center. > >My understanding is that all DA glass has been created with this >astigmatism compensation specifically with sensors in mind.
Erm, this is nothing to do with astigmatism. -- 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.
