Re: Info about Katz Eye Focusing Screens
It seems, putting a DS/Katzeye scrren in a K10D (and K20D I suppose, I do not expect any change there) would cure (at least up to a certain point) the metering problems with K/M lenses and provide a situation comparable to D/DS etc bodies. It also provides microprism if so you chose but it might as well degrade the metering performance with A/F/FA/DA lenses. Tough choice IMO... -- Thibault Massart aka Thibouille -- Photo: K10D,Z1,SuperA,KX,MX, P30t and KR-10x ;) ... Thinkpad: X23+UB,X60+UB Programing: D7 user (trying out D2007) -- 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.
Re: Info about Katz Eye Focusing Screens
The metering and AF would never be affected by focusing screens, since it's done 'behind the mirror'. Cheers, Timber It seems, putting a DS/Katzeye scrren in a K10D (and K20D I suppose, I do not expect any change there) would cure (at least up to a certain point) the metering problems with K/M lenses and provide a situation comparable to D/DS etc bodies. It also provides microprism if so you chose but it might as well degrade the metering performance with A/F/FA/DA lenses. Tough choice IMO... -- Thibault Massart aka Thibouille -- Photo: K10D,Z1,SuperA,KX,MX, P30t and KR-10x ;) ... Thinkpad: X23+UB,X60+UB Programing: D7 user (trying out D2007) -- 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. -- 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.
Re: Info about Katz Eye Focusing Screens
I'm not entirely sure but I believe that while the LX has it's metering behind the mirror, and several other Pentax Cameras had OTF metering for TTL flash. All other Pentax cameras have metering cells in the pentaprism housing and take their reading off the focusing screen, including PTTL flash. [EMAIL PROTECTED] wrote: The metering and AF would never be affected by focusing screens, since it's done 'behind the mirror'. Cheers, Timber It seems, putting a DS/Katzeye scrren in a K10D (and K20D I suppose, I do not expect any change there) would cure (at least up to a certain point) the metering problems with K/M lenses and provide a situation comparable to D/DS etc bodies. It also provides microprism if so you chose but it might as well degrade the metering performance with A/F/FA/DA lenses. Tough choice IMO... -- Thibault Massart aka Thibouille -- Photo: K10D,Z1,SuperA,KX,MX, P30t and KR-10x ;) ... Thinkpad: X23+UB,X60+UB Programing: D7 user (trying out D2007) -- 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. -- Vote for Cthulhu. Why settle for a lesser evil... -- Dr. Jerry Pournelle -- 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.
Re: Info about Katz Eye Focusing Screens
On Apr 7, 2008, at 1:33, Thibouille wrote: It seems, putting a DS/Katzeye scrren in a K10D (and K20D I suppose, I do not expect any change there) would cure (at least up to a certain point) the metering problems with K/M lenses and provide a situation comparable to D/DS etc bodies. I considered moving my DS screen to my K10D but was put off by all of the metering problems I read about and so I let the screen go when I handed my DS off to my daughter. As nice as the K10D screen is, I'm probably going to get a Katzeye for it fairly soon (one which is made for the K10D). I was doing some manual-focus work at my brother's house this weekend (dimly lit interior with just a bit of cloudy-day daylight coming in the windows) and almost all of my manually-focused shots were off - by a lot. Seems I have a back-focus problem when using the F50 f/1.7 lens. I was off by around 1-1.5 feet on almost every shot. :-( I think the split-prism would have helped a lot in this particular situation. -Charles -- Charles Robinson - [EMAIL PROTECTED] Minneapolis, MN http://charles.robinsontwins.org -- 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.
Re: Info about Katz Eye Focusing Screens
The AF sensor apparatus is in the mirror box behind the mirror, but the metering sensors read the light coming from the focusing screen. I tested my *ist DS KatzEye screen in the K10D. At that time, there wasn't a dedicated K10D screen available yet. The K10D demonstrated an average metering calibration shift such that the exposure was off by 0.7 EV on a standard metering target (gray card) in all modes. I talked to Rebecca Katz about this. My decision was that I didn't need a screen given the K10D screen quality. Rebecca and company might well have done some revisions to the K10D specific screens since then. Godfrey On Apr 7, 2008, at 12:40 AM, [EMAIL PROTECTED] wrote: The metering and AF would never be affected by focusing screens, since it's done 'behind the mirror'. It seems, putting a DS/Katzeye scrren in a K10D (and K20D I suppose, I do not expect any change there) would cure (at least up to a certain point) the metering problems with K/M lenses and provide a situation comparable to D/DS etc bodies. It also provides microprism if so you chose but it might as well degrade the metering performance with A/F/FA/DA lenses. Tough choice IMO... -- 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.
Re: Info about Katz Eye Focusing Screens
If you're consistently off in the same direction, and roughly the same distance every time you manually focus, then it's more likely that the focusing screen is out of alignment with the sensor plane. A Katzeye screen won't help that. The camera needs to be sent to Pentax for adjustment. Charles Robinson wrote: On Apr 7, 2008, at 1:33, Thibouille wrote: It seems, putting a DS/Katzeye scrren in a K10D (and K20D I suppose, I do not expect any change there) would cure (at least up to a certain point) the metering problems with K/M lenses and provide a situation comparable to D/DS etc bodies. I considered moving my DS screen to my K10D but was put off by all of the metering problems I read about and so I let the screen go when I handed my DS off to my daughter. As nice as the K10D screen is, I'm probably going to get a Katzeye for it fairly soon (one which is made for the K10D). I was doing some manual-focus work at my brother's house this weekend (dimly lit interior with just a bit of cloudy-day daylight coming in the windows) and almost all of my manually-focused shots were off - by a lot. Seems I have a back-focus problem when using the F50 f/1.7 lens. I was off by around 1-1.5 feet on almost every shot. :-( I think the split-prism would have helped a lot in this particular situation. -Charles -- Charles Robinson - [EMAIL PROTECTED] Minneapolis, MN http://charles.robinsontwins.org -- Vote for Cthulhu. Why settle for a lesser evil... -- Dr. Jerry Pournelle -- 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.
Re: Info about Katz Eye Focusing Screens
On Apr 7, 2008, at 10:09, P. J. Alling wrote: If you're consistently off in the same direction, and roughly the same distance every time you manually focus, then it's more likely that the focusing screen is out of alignment with the sensor plane. A Katzeye screen won't help that. The camera needs to be sent to Pentax for adjustment. It works fine in testing mode (ie, when I'm trying to see it fail). It just fails in the real world when I don't use targets taped to tables. I am reasonably confident that the failure is entirely mine. Not 100% certain, but close. -Charles -- Charles Robinson - [EMAIL PROTECTED] Minneapolis, MN http://charles.robinsontwins.org -- 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.
Info about Katz Eye Focusing Screens
Hi List! I would like to ask if any of you have any experience with the Katz Eye Focusing Screens on K10D (or K20D)? I've replaced my focusing screen with a split-prism one (made in China) and the screen is a little darker. But focusing with manual focus lens are a bit easier (and gives back a little more of the Praktica-feeling :P)... I wonder if Katz Eye screens are so good as expensive they are... Cheers, Timber -- 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.
Re: Info about Katz Eye Focusing Screens
I had a customized one in my *ist DS body for over a year and was quite pleased with it. However, find the K10D screen a little better and haven't seen the need for a custom screen for it. G On Apr 6, 2008, at 1:03 PM, Timber wrote: Hi List! I would like to ask if any of you have any experience with the Katz Eye Focusing Screens on K10D (or K20D)? I've replaced my focusing screen with a split-prism one (made in China) and the screen is a little darker. But focusing with manual focus lens are a bit easier (and gives back a little more of the Praktica-feeling :P)... I wonder if Katz Eye screens are so good as expensive they are... -- 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.
