EXIF Data Source Question
A topic from the dorkforum leads me here. When a lens type is imbedded in the EXIF data, is the lens telling the camera what it is in specific terms (IE: DA35mm f/2.8 macro) or is the lens sending a trigger value to the camera which then inserts the correct lens info from a self contained data base? Thanks William Robb -- 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: EXIF Data Source Question
Could be either possibility. IIRC with Pentax it's the lens sending a code which the camera compares to a table of lens ID's, while with Nikon it actually sends the full name. -Adam On Thu, Oct 16, 2008 at 10:05 AM, William Robb [EMAIL PROTECTED] wrote: A topic from the dorkforum leads me here. When a lens type is imbedded in the EXIF data, is the lens telling the camera what it is in specific terms (IE: DA35mm f/2.8 macro) or is the lens sending a trigger value to the camera which then inserts the correct lens info from a self contained data base? Thanks William Robb -- 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. -- M. Adam Maas http://www.mawz.ca Explorations of the City Around Us. -- 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: EXIF Data Source Question
On Oct 16, 2008, at 9:05 AM, William Robb wrote: A topic from the dorkforum leads me here. When a lens type is imbedded in the EXIF data, is the lens telling the camera what it is in specific terms (IE: DA35mm f/2.8 macro) or is the lens sending a trigger value to the camera which then inserts the correct lens info from a self contained data base? Thanks William Robb Ha. I bet this is from my (lowbit) original posting at said dorkforum. :-) -- 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: EXIF Data Source Question
For Pentax, the EXIF only contains a code. Your software on the PC translates this to a legible name. I use IMatch to manage my images, and whenever I get a new lens, it just displays something like Unknown Lens [8,56] and I have to tell the IMatch author what lens that corresponds to, and he adds it to the database for the next release. PhotoME is good about having an up-to-date lens database, and you can also use it to see the code that's really in the EXIF. On Thu, Oct 16, 2008 at 10:05 AM, William Robb [EMAIL PROTECTED] wrote: A topic from the dorkforum leads me here. When a lens type is imbedded in the EXIF data, is the lens telling the camera what it is in specific terms (IE: DA35mm f/2.8 macro) or is the lens sending a trigger value to the camera which then inserts the correct lens info from a self contained data base? Thanks William Robb -- 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: EXIF Data Source Question
- Original Message - From: Matthew Montgomery Subject: Re: EXIF Data Source Question Ha. I bet this is from my (lowbit) original posting at said dorkforum. :-) [EMAIL PROTECTED] Indeed it is. Just don't out me over there.. William Robb -- 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: EXIF Data Source Question
- Original Message - From: Matthew Hunt Subject: Re: EXIF Data Source Question For Pentax, the EXIF only contains a code. Your software on the PC translates this to a legible name. I use IMatch to manage my images, and whenever I get a new lens, it just displays something like Unknown Lens [8,56] and I have to tell the IMatch author what lens that corresponds to, and he adds it to the database for the next release. PhotoME is good about having an up-to-date lens database, and you can also use it to see the code that's really in the EXIF. Thanks Matthew. I hope I've put that info to good use.. William Robb -- 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: EXIF Data Source Question
On Oct 16, 2008, at 09:01 , William Robb [EMAIL PROTECTED] wrote: A topic from the dorkforum leads me here. When a lens type is imbedded in the EXIF data, is the lens telling the camera what it is in specific terms (IE: DA35mm f/2.8 macro) or is the lens sending a trigger value to the camera which then inserts the correct lens info from a self contained data base? Thanks William Robb I think I have to agree that the lens name is from an internal body database. My K10 nor my K20 do not know the lens model when my DA 18-250 mm or the 12-24mm is used, just the focal length at the time the shot is taken. But in the case of an older FA lens, it does fill in the Lens Model name, no problem. That might be because neither of those lenses is manufactured by Pentax, only badged? Joseph McAllister Pentaxian -- 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: EXIF Data Source Question
On Thu, Oct 16, 2008 at 2:30 PM, Joseph McAllister [EMAIL PROTECTED] wrote: On Oct 16, 2008, at 09:01 , William Robb [EMAIL PROTECTED] wrote: A topic from the dorkforum leads me here. When a lens type is imbedded in the EXIF data, is the lens telling the camera what it is in specific terms (IE: DA35mm f/2.8 macro) or is the lens sending a trigger value to the camera which then inserts the correct lens info from a self contained data base? Thanks William Robb I think I have to agree that the lens name is from an internal body database. My K10 nor my K20 do not know the lens model when my DA 18-250 mm or the 12-24mm is used, just the focal length at the time the shot is taken. But in the case of an older FA lens, it does fill in the Lens Model name, no problem. That might be because neither of those lenses is manufactured by Pentax, only badged? Joseph McAllister Pentaxian The K20D and K10D should know the 12-24, which predates both models (and is indeed manufactured by Pentax, based on a Tokina optical design). The K20D should also know the 18-250 which predates it, but not the K10D. -- M. Adam Maas http://www.mawz.ca Explorations of the City Around Us. -- 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: EXIF Data Source Question
On Thu, Oct 16, 2008 at 12:37 PM, Adam Maas wrote: The K20D and K10D should know the 12-24, which predates both models (and is indeed manufactured by Pentax, based on a Tokina optical design). The K20D should also know the 18-250 which predates it, but not the K10D. Adam, when you say the camera should know the lens, do you mean that it is held in the camera's internal data base? Thanks -- William Robb -- 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: EXIF Data Source Question
On Thu, Oct 16, 2008 at 2:43 PM, William Robb [EMAIL PROTECTED] wrote: On Thu, Oct 16, 2008 at 12:37 PM, Adam Maas wrote: The K20D and K10D should know the 12-24, which predates both models (and is indeed manufactured by Pentax, based on a Tokina optical design). The K20D should also know the 18-250 which predates it, but not the K10D. Adam, when you say the camera should know the lens, do you mean that it is held in the camera's internal data base? Thanks -- William Robb It should be, at least for any Pentax-branded lens that's older than the firmware on the camera. -- M. Adam Maas http://www.mawz.ca Explorations of the City Around Us. -- 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: EXIF Data Source Question
A topic from the dorkforum leads me here. When a lens type is imbedded in the EXIF data, is the lens telling the camera what it is in specific terms (IE: DA35mm f/2.8 macro) or is the lens sending a trigger value to the camera which then inserts the correct lens info from a self contained data base? Thanks William Robb I have no idea, but if I was the designer I'd make the lens send the data to the body. There's no need for the body to know about lenses it may never mate with, so storing the information in the camera is a waste of resources. Bob -- 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.
