Re: Another question about the istDS- changing screens?
I haven't tested anything of course. (I don't do that.) But I've shot with the K85, the K28, the K 135/2.5 and the Vivitar Series 1 90/2.5. I rarely shoot at an ap smaller than f8, so that could explain why I haven't encountered a problem. Firmware mods should be able to fix exposure discrepancies. Paul On Feb 1, 2007, at 10:10 PM, Godfrey DiGiorgi wrote: > There do seem to be some metering inconsistencies with the K10D and > the green button stopdown mode, depending on the EV and the aperture > setting. Some testing I did subsequent to my first tests are at: > >http://homepage.mac.com/godders/mCAL/calibration-K10.txt >http://homepage.mac.com/godders/mCAL/calibration-K10.jpg > > Some folks on DPReview.com have claimed that fitting an *ist DS OEM > screen fixes these issues. I'm a little skeptical of that, but have > not done a test. > > I don't have any K/M series lenses any more other than the Zenitar > 16, and I only rarely use that, so the issue is not high priority for > me. > > G > > > On Feb 1, 2007, at 7:00 PM, Paul Stenquist wrote: > >> i have no problems with exposure using K lenses on the K10D. Maybe >> some people have problems with plain old center weighted metering? >> Paul >> On Feb 1, 2007, at 9:39 PM, David Weiss wrote: >> >>> Speaking of metering with that screen, seems the trouble with >>> exposure >>> of k and m lenses on the k10d can be corrected if a screen from the >>> ist >>> DS is installed. Well, that is what people are reporting on >>> DPreview. > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Another question about the istDS- changing screens?
There do seem to be some metering inconsistencies with the K10D and the green button stopdown mode, depending on the EV and the aperture setting. Some testing I did subsequent to my first tests are at: http://homepage.mac.com/godders/mCAL/calibration-K10.txt http://homepage.mac.com/godders/mCAL/calibration-K10.jpg Some folks on DPReview.com have claimed that fitting an *ist DS OEM screen fixes these issues. I'm a little skeptical of that, but have not done a test. I don't have any K/M series lenses any more other than the Zenitar 16, and I only rarely use that, so the issue is not high priority for me. G On Feb 1, 2007, at 7:00 PM, Paul Stenquist wrote: > i have no problems with exposure using K lenses on the K10D. Maybe > some people have problems with plain old center weighted metering? > Paul > On Feb 1, 2007, at 9:39 PM, David Weiss wrote: > >> Speaking of metering with that screen, seems the trouble with >> exposure >> of k and m lenses on the k10d can be corrected if a screen from the >> ist >> DS is installed. Well, that is what people are reporting on >> DPreview. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Another question about the istDS- changing screens?
i have no problems with exposure using K lenses on the K10D. Maybe some people have problems with plain old center weighted metering? Paul On Feb 1, 2007, at 9:39 PM, David Weiss wrote: > Speaking of metering with that screen, seems the trouble with exposure > of k and m lenses on the k10d can be corrected if a screen from the > ist > DS is installed. Well, that is what people are reporting on DPreview. > > Dave > > > > > J. C. O'Connell wrote: >> Cool! I wont wait for what's available, I will >> take it into my own hands and make what I want >> work now. Only caveat is metering might get a little >> out of whack for a new unknown screen, but >> then again, might not. >> jco >> >> -Original Message- >> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On >> Behalf Of >> Paul Stenquist >> Sent: Wednesday, January 31, 2007 11:04 PM >> To: Pentax-Discuss Mail List >> Subject: Re: Another question about the istDS- changing screens? >> >> >> Yes, the screen can be replaced in much the same manner as that of >> the LX. I put a grid screen in my *IstD. Waiting to see what becomes >> available for the K10D. >> Paul >> On Jan 31, 2007, at 10:44 PM, J. C. O'Connell wrote: >> >>> I think I read its possible for user to change >>> screens on the istDS. Is this true?, is this difficult? Anybody done >>> this? Curious I have a bunch of parts bodies I can salvage a >>> split >>> image screen from and modify ( cut ) to fit if I can install >>> it myself easy enough without having to disassemble the body. >>> >>> >>> jco >>> >>> >>> -- >>> PDML Pentax-Discuss Mail List >>> PDML@pdml.net >>> http://pdml.net/mailman/listinfo/pdml_pdml.net >> >> > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Another question about the istDS- changing screens?
Speaking of metering with that screen, seems the trouble with exposure of k and m lenses on the k10d can be corrected if a screen from the ist DS is installed. Well, that is what people are reporting on DPreview. Dave J. C. O'Connell wrote: > Cool! I wont wait for what's available, I will > take it into my own hands and make what I want > work now. Only caveat is metering might get a little > out of whack for a new unknown screen, but > then again, might not. > jco > > -Original Message- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of > Paul Stenquist > Sent: Wednesday, January 31, 2007 11:04 PM > To: Pentax-Discuss Mail List > Subject: Re: Another question about the istDS- changing screens? > > > Yes, the screen can be replaced in much the same manner as that of > the LX. I put a grid screen in my *IstD. Waiting to see what becomes > available for the K10D. > Paul > On Jan 31, 2007, at 10:44 PM, J. C. O'Connell wrote: > >> I think I read its possible for user to change >> screens on the istDS. Is this true?, is this difficult? Anybody done >> this? Curious I have a bunch of parts bodies I can salvage a split >> image screen from and modify ( cut ) to fit if I can install >> it myself easy enough without having to disassemble the body. >> >> >> jco >> >> >> -- >> PDML Pentax-Discuss Mail List >> PDML@pdml.net >> http://pdml.net/mailman/listinfo/pdml_pdml.net > > -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
RE: Another question about the istDS- changing screens?
I've done exactly what you are proposing to my -DS. The actual swapping of screens is very easy... just a tiny little hinged frame around the screen with a snap-type clip on the top. Open the door, remove old, insert new, close door. As far as cutting down a screen, it's rather tedious. I bought one from a local camera repair shop for $5 out of an old Minolta. I wanted a diagonal split-prism like my P30T had, but apparently almost nobody ever used them. Seems like a no-brainer since both vertical AND horizontal lines are useful then... but I digress... Anyway, I used a calipers to measure the stock -DS screen's dimensions and the sacrificial screen's. Split the two dimensions, scratch a line onto the new one, and get to sanding/filing. I was very careful to only ever hold the screen by the edge. Caveats: - Easy to file the screen slightly off-center. I did. Oops. - Different focus screen may cause metering problems due to different transmission, but largely irrelevant due to... - Stop-down metering with pre-A lenses blacks out the center prism with apertures smaller than f/5.6-f/8. That screws the spot metering completely and messes the center-weighted appreciably. Only way I've found with the older lenses is to use the stop-down metering hack, but then double-check the histogram after the shot. - Well-known blackout with sufficiently slow lenses. Otherwise, it's great for lenses f/4 and faster... f/2.8 or faster is REALLY nice. -Cory On Wed, 31 Jan 2007, J. C. O'Connell wrote: > Cool! I wont wait for what's available, I will > take it into my own hands and make what I want > work now. Only caveat is metering might get a little > out of whack for a new unknown screen, but > then again, might not. > jco > > -Original Message- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of > Paul Stenquist > Sent: Wednesday, January 31, 2007 11:04 PM > To: Pentax-Discuss Mail List > Subject: Re: Another question about the istDS- changing screens? > > > Yes, the screen can be replaced in much the same manner as that of > the LX. I put a grid screen in my *IstD. Waiting to see what becomes > available for the K10D. > Paul > On Jan 31, 2007, at 10:44 PM, J. C. O'Connell wrote: > >> I think I read its possible for user to change >> screens on the istDS. Is this true?, is this difficult? Anybody done >> this? Curious I have a bunch of parts bodies I can salvage a split >> image screen from and modify ( cut ) to fit if I can install >> it myself easy enough without having to disassemble the body. >> >> >> jco >> >> >> -- >> PDML Pentax-Discuss Mail List >> PDML@pdml.net >> http://pdml.net/mailman/listinfo/pdml_pdml.net > > > -- * * Cory Papenfuss, Ph.D., PPSEL-IA * * Electrical Engineering* * Virginia Polytechnic Institute and State University * * -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
RE: Another question about the istDS- changing screens?
Cool! I wont wait for what's available, I will take it into my own hands and make what I want work now. Only caveat is metering might get a little out of whack for a new unknown screen, but then again, might not. jco -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Paul Stenquist Sent: Wednesday, January 31, 2007 11:04 PM To: Pentax-Discuss Mail List Subject: Re: Another question about the istDS- changing screens? Yes, the screen can be replaced in much the same manner as that of the LX. I put a grid screen in my *IstD. Waiting to see what becomes available for the K10D. Paul On Jan 31, 2007, at 10:44 PM, J. C. O'Connell wrote: > I think I read its possible for user to change > screens on the istDS. Is this true?, is this difficult? Anybody done > this? Curious I have a bunch of parts bodies I can salvage a split > image screen from and modify ( cut ) to fit if I can install > it myself easy enough without having to disassemble the body. > > > jco > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Another question about the istDS- changing screens?
At 12:44 PM 1/02/2007, J. C. O'Connell wrote: >I think I read its possible for user to change >screens on the istDS. Is this true?, is this difficult? >Anybody done this? Curious >I have a bunch of parts bodies I can salvage a split >image screen from and modify ( cut ) to fit if I can install >it myself easy enough without having to disassemble the body. I've never done it, but according to others here it's just like changing an LX screen. Cheers, Dave -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Another question about the istDS- changing screens?
Yes, the screen can be replaced in much the same manner as that of the LX. I put a grid screen in my *IstD. Waiting to see what becomes available for the K10D. Paul On Jan 31, 2007, at 10:44 PM, J. C. O'Connell wrote: > I think I read its possible for user to change > screens on the istDS. Is this true?, is this difficult? > Anybody done this? Curious > I have a bunch of parts bodies I can salvage a split > image screen from and modify ( cut ) to fit if I can install > it myself easy enough without having to disassemble the body. > > > jco > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
