You would set it through the dial. The actual physical f-stop would be set at min (f22 or whatever) just like an A lens.
[EMAIL PROTECTED] wrote: > How would the camera know the current set aperture of the lens? > > Gonz wrote: > > >>You still have to put in the focal length for SR, the aperture simulator >>is not going to help you there. In fact, you could make the firmware >>remember your lens history and let you select from that for much quicker >>setup when you power on. >> >>With the new bodies, you cannot do multi-segment metering with the old >>lenses, the aperture simulator is not going help you there either. >> >>Plus, knowing the characteristics of the lens can help you do things in >>the firmware the the aperture simulator couldnt possibly do, like do >>distortion correction in the firmware, or vignetting compensation, etc. >> >>It may be seem to be messy, but you do it ONCE per lens (or you could >>skip it because it would come with default tables) and your done. After >>that, you simply dial in the lens you are using and you get max >>functionality. >> >>And to answer your more direct question why: because it would be >>redundant, the tables would provide the equivalent function. >> >>[EMAIL PROTECTED] wrote: >> >> >> >>>But why, your autocalibration for each lens is >>>Not as smooth an integration as the simple >>>Cam sensor would be. There is no need to >>>do it from the body. The user would also have >>>to input the absolute maximum apeture too. Its >>>messy compared to simple lens cam sensor >>>and mounting ANY K/M lens you please without >>>having to change any settings or run calibrations. >>>jco >>> >>>-----Original Message----- >>>From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of >>>Gonz >>>Sent: Saturday, October 14, 2006 12:39 AM >>>To: Pentax-Discuss Mail List >>>Subject: Re: K1D aperature simulator survey, part Deaux >>> >>>My point is not that Pentax would do it, my point is that it could be >>>done. That way they could do away with the simulator if they wanted to >>>continue moving forward with the concept of controlling the lens from >>>the body. >>> >>>[EMAIL PROTECTED] wrote: >>> >>> >>> >>> >>>>Yes each lens could be autocalibrated but I doubt >>>>Pentax would be willing to go that far if they >>>>Wont even provide something as simple and cheap >>>>As the cam sensor which would eliminate the need >>>>For any calibration with any K/M lenses. That's how >>>>The were designed to be used anyway. >>>>jco >>>> >>>>-----Original Message----- >>>>From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf >>>> >>>> >>> >>>Of >>> >>> >>> >>> >>>>Gonz >>>>Sent: Friday, October 13, 2006 11:59 PM >>>>To: Pentax-Discuss Mail List >>>>Subject: Re: K1D aperature simulator survey, part Deaux >>>> >>>>I bet you'll find that due to mass production, the sample variation is >>>> >>>> >>> >>> >>> >>> >>>>not significant. Even though the "A" lenses might be calibrated that >>>>way, its still the same basic concept. I've found that while using >>>> >>>> >>> >>>the >>> >>> >>> >>> >>>>aperture ring is more accurate even for "A" lenses, its not off by >>>> >>>> >>> >>>that >>> >>> >>> >>> >>>>much, maybe 1/3 stop on worst case. Its probably similar to the K/M >>>>lenses. Besides you could autocalibrate your lens and write the table >>>> >>>> >>> >>> >>> >>> >>>>back into the firmware. Problem solved. >>>> >>>> >>>>[EMAIL PROTECTED] wrote: >>>> >>>> >>>> >>>> >>>> >>>>>What I said is they are not all the SAME >>>>>Non linearity. Not enough consistancy >>>>>>From sample to sample and lens model to lens >>>>>Model to allow it. Non linearity isnt the >>>>>Problem, non consistancy is because they >>>>>Were all designed to use "digitally" (fully >>>>>Closed or fully open with regard to the aperture >>>>>Actuator). >>>>>jco >>>>> >>>>>-----Original Message----- >>>>>From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf >>>>> >>>>> >>>> >>>>Of >>>> >>>> >>>> >>>> >>>> >>>>>Gonz >>>>>Sent: Friday, October 13, 2006 8:24 PM >>>>>To: Pentax-Discuss Mail List >>>>>Subject: Re: K1D aperature simulator survey, part Deaux >>>>> >>>>>"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
