On Thu, Jul 30, 2009 at 03:42:32PM +0200, Ralf R. Radermacher scripsit: > Graydon <o...@uniserve.com> wrote: > > Is there any reason to think that it is technically possible to fix this > > issue with the current (K-7) or previous (K20D) generation 14.6 MP > > Samsung sensors? > > This might be a problem for really long exposures.
How long is a really long exposure? Just so we're both talking about the same thing. > At least they could let us shoot without DFS using shorter times and > lower sensitivities. They do in all other exposure modes. You can do 30 > sec exposures in M without mandatory DFS. Why not in B? Are you sure? I think I've seen auto-DFS with a 15s P mode exposure. There may well be auto-DFS for all exposures above n seconds, where n is around 12. M maxes out at 30s, so the same marketing team may feel that the heat management mechanisms are OK up to 30s but will risk serious failure at times much longer than that, and that publicizing such a concern would be worse, in terms of lost corporate face, than a 30s M exposure that's somewhat noisy. Since the people involved are Japanese, you won't get direct acknowledgement of any of this; the DFS is there to improve performance, period, end of sentence, full stop. It's almost impossible to get direct acknowledgement that something is a bug out of a Japanese firm. -- Graydon -- 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.
