[EMAIL PROTECTED] wrote: > No, the issue is sample to sample variation on K lenses. A lenses are > essentially calibrated (A set amount of aperture lever deflection > indicates a set amount of aperture change). K lenses are designed to > move until the stop is hit, where the stop is provided by the consistent > aperture ring itself. >
I doubt its as bad as you think. If it is, then a simple autocalibration routine could take care of it. We do this type of thing all the time in the electronic circuit simulation business. > -Adam > > > Gonz wrote: > >>"A" lenses are no different, except that the actuator is linear. If you >>put your M or K lense on f22 and move the actuator, it acts the same >>way. Since they have to at least work with the mechanical stop based >>method, this means that they are machined to at least this accuracy. So >>it should work, I disagree with you. >> >> >>[EMAIL PROTECTED] wrote: >> >>>I don't think this is possible because K/M >>>Lenses were not designed for partial closure >>>Of the aperture and do not have consistant >>>Non linear closure from sample to sample. It >>>Was a simple OPEN/CLOSE/OPEN design. >>>jco >>> >>>-----Original Message----- >>>From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of >>>Gonz >>>Sent: Friday, October 13, 2006 4:47 PM >>>To: Pentax-Discuss Mail List >>>Subject: Re: K1D aperature simulator survey, part Deaux >>> >>>The firmware on the Samsungs is definitely different, see the pics >>>floating around for the K10D samsung equivalent. The UI is distinctly >>>different. >>> >>>If the firmware is different, then they could actually implement the >>>whole aperture simulator thing in firmware if I understand correctly how >>> >>>its supposed to work. The way you could do it is by inputing the lens >>>being used, say K50 1.4 into the body UI when you powered up the camera. >>> >>> All they would need would be the actual non-linear response of the >>>aperture linkage (which would be in a table in the firmware) and they >>>could close down the aperture to the correct position as dialed in by >>>the user on the body. The user would have to set the lens to f22 or >>>whatever the min on the lens is, effectively mimicing the "A" setting. >>>Knowing exactly what lens is mounted would be used not only for the >>>aperture response, but the focal length for SR, the wide open aperture, >>>and possibly even used for multi-segment metering. >>> >>>[EMAIL PROTECTED] wrote: >>> >>> >>>>Umm.... Hello! It's another moot question! Samsung bodies are, and >>>>will always be, re-named Pentax bodies. They will not produce a >>> >>>unique >>> >>> >>>>k-mount body. Stop with the surveys and get a grip. >>>> >>> > > -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
