Re: [darktable-dev] Incorrect lens name not displayed
De : "jys" A : darktable-dev@lists.darktable.org Envoyé: jeudi 9 Avril 2020 04:59 Objet : Re: [darktable-dev] Incorrect lens name not displayed Thanks for the link jys. On Wed, Apr 8, 2020, at 11:17, philippe.weyl...@laposte.net wrote: man exiv2 - CONFIGURATION FILE Sounds interesting but I havent' found any configuration item with man exiv2. Is there any other source which could help to know more about this ? https://dev.exiv2.org/projects/exiv2/wiki/Lens_Recognition_in_Exiv2_v026_(and_later)/ -- jys ___ darktable developer mailing list to unsubscribe send a mail to darktable-dev+unsubscr...@lists.darktable.org ___ darktable developer mailing list to unsubscribe send a mail to darktable-dev+unsubscr...@lists.darktable.org
Re: [darktable-dev] Incorrect lens name not displayed
Hello Everyone, I went to the forums of exiv2 and indeed they did say something about manufacturers using the same lens ID. I actually gave up on it too , haha. not really a big issue , I was just curious On Thu, 9 Apr 2020 at 10:59, jys wrote: > > > On Wed, Apr 8, 2020, at 11:17, philippe.weyl...@laposte.net wrote: > > > > man exiv2 -> CONFIGURATION FILE > > > > Sounds interesting but I havent' found any configuration item with man > exiv2. > > Is there any other source which could help to know more about this ? > > > https://dev.exiv2.org/projects/exiv2/wiki/Lens_Recognition_in_Exiv2_v026_(and_later)/ > > -- > jys > ___ > darktable developer mailing list > to unsubscribe send a mail to > darktable-dev+unsubscr...@lists.darktable.org > > -- -VINCENT AGUDELO ___ darktable developer mailing list to unsubscribe send a mail to darktable-dev+unsubscr...@lists.darktable.org
Re: [darktable-dev] Incorrect lens name not displayed
On Wed, Apr 8, 2020, at 11:17, philippe.weyl...@laposte.net wrote: > > man exiv2 -> CONFIGURATION FILE > > Sounds interesting but I havent' found any configuration item with man exiv2. > Is there any other source which could help to know more about this ? https://dev.exiv2.org/projects/exiv2/wiki/Lens_Recognition_in_Exiv2_v026_(and_later)/ -- jys ___ darktable developer mailing list to unsubscribe send a mail to darktable-dev+unsubscr...@lists.darktable.org
Re: [darktable-dev] Incorrect lens name not displayed
However, you can setup your own mappings: man exiv2 - CONFIGURATION FILE Sounds interesting but I havent' found any configuration item with man exiv2. Is there any other source which could help to know more about this ? Thanks Philippe ___ darktable developer mailing list to unsubscribe send a mail to darktable-dev+unsubscr...@lists.darktable.org
Re: [darktable-dev] Incorrect lens name not displayed
thanks very much for the info ! On Fri, 3 Apr 2020 at 17:55, Andreas Schneider wrote: > On Friday, 3 April 2020 11:16:40 CEST Mikael Puhakka wrote: > > EXIF information is a messy business. The FLOSS "de-facto" standard > > library used by everyone is Phil Harvey's exiftool. Recently I used > > it to study some of my images; a Sigma 35mm f/1.4 ART was rendered as > > Canon 17-40 by the tool. > > The problem is that some manufacturers use lens ids in the EXIF and not > strings. So you need a database which maps the id (integer) to a human > readable string. Looks like Sigma is using the same id as canon for that > lens > ... > > The mappin is coming from libexiv2 which darktable uses. So your bug > report > should go to the exiv2 project :-) > > However, you can setup your own mappings: > > man exiv2 -> CONFIGURATION FILE > > > > Andreas > > -- > Andreas Schneider a...@cryptomilk.org > GPG-ID: 8DFF53E18F2ABC8D8F3C92237EE0FC4DCC014E3D > > > -- -VINCENT AGUDELO ___ darktable developer mailing list to unsubscribe send a mail to darktable-dev+unsubscr...@lists.darktable.org
Re: [darktable-dev] Incorrect lens name not displayed
On Friday, 3 April 2020 11:16:40 CEST Mikael Puhakka wrote: > EXIF information is a messy business. The FLOSS "de-facto" standard > library used by everyone is Phil Harvey's exiftool. Recently I used > it to study some of my images; a Sigma 35mm f/1.4 ART was rendered as > Canon 17-40 by the tool. The problem is that some manufacturers use lens ids in the EXIF and not strings. So you need a database which maps the id (integer) to a human readable string. Looks like Sigma is using the same id as canon for that lens ... The mappin is coming from libexiv2 which darktable uses. So your bug report should go to the exiv2 project :-) However, you can setup your own mappings: man exiv2 -> CONFIGURATION FILE Andreas -- Andreas Schneider a...@cryptomilk.org GPG-ID: 8DFF53E18F2ABC8D8F3C92237EE0FC4DCC014E3D ___ darktable developer mailing list to unsubscribe send a mail to darktable-dev+unsubscr...@lists.darktable.org
Re: [darktable-dev] Incorrect lens name not displayed
EXIF information is a messy business. The FLOSS "de-facto" standard library used by everyone is Phil Harvey's exiftool. Recently I used it to study some of my images; a Sigma 35mm f/1.4 ART was rendered as Canon 17-40 by the tool. The only "real solution", I think, is to implement messy manufacturer-specific rules and even hardcoded lists of lenses and use all kinds of hacky ways to determine actual used lens. Not an affair everyone wishes to participate. - Mike On Fri, Apr 3, 2020 at 11:58 AM Vincent Agudelo wrote: > > Hello, > > I noticed that in the Image "information panel" in the "lens" section, my > lens is not identified correctly > > it says "Sigma 24-70mm f/2.8 IF EX DG" (even the lens correction module says > so) > > but my lens is > Tamron SP 24-70mm F/2.8 Di VC USD > model A007E (canon mount) > > camera body > Canon 5D mk ii > > here is a screen shot > https://drive.google.com/file/d/1CvEfwqi1nYAsP5GSIZpJSddi2yxYMOHw/view > > as a reference , here is a sample raw file created using the lens > https://drive.google.com/file/d/1YZu7JO68sSIZIDBbg2ZZn7yO6p2vrz5C/view > > my Tamron lens is available as an option in the lens correction module. > > so maybe this is just a display issue ? or it confuses the lens with the > sigma ? > > thanks ! > > -- > -VINCENT AGUDELO > > ___ > darktable developer mailing list to unsubscribe send a mail to > darktable-dev+unsubscr...@lists.darktable.org ___ darktable developer mailing list to unsubscribe send a mail to darktable-dev+unsubscr...@lists.darktable.org
[darktable-dev] Incorrect lens name not displayed
Hello, I noticed that in the Image "information panel" in the "lens" section, my lens is not identified correctly it says "Sigma 24-70mm f/2.8 IF EX DG" (even the lens correction module says so) but my lens is Tamron SP 24-70mm F/2.8 Di VC USD model A007E (canon mount) camera body Canon 5D mk ii here is a screen shot https://drive.google.com/file/d/1CvEfwqi1nYAsP5GSIZpJSddi2yxYMOHw/view as a reference , here is a sample raw file created using the lens https://drive.google.com/file/d/1YZu7JO68sSIZIDBbg2ZZn7yO6p2vrz5C/view my Tamron lens is available as an option in the lens correction module. so maybe this is just a display issue ? or it confuses the lens with the sigma ? thanks ! -- -VINCENT AGUDELO ___ darktable developer mailing list to unsubscribe send a mail to darktable-dev+unsubscr...@lists.darktable.org
