Re: [darktable-dev] Lens correction with FF lenses used on APS-C

Hi, Am 24.02.19 um 13:32 schrieb Florian W: > 1 This reasoning is mixing description of digital features with analog > ones . A lens quality and specs is not defined by MP resolution (rather > by like purity of the glass, glass curvature homogeneity, CoC, TCA, and > so on). You are right,

Re: [darktable-dev] Lens correction with FF lenses used on APS-C

dxomark.com website seems to have relevant numbers, see for example Nikon lens mentioned by Sturm Flut: https://www.dxomark.com/Lenses/Nikon/AF-S-Nikkor-24-70mm-f-2.8G-ED-mounted-on-Nikon-D750__975 https://www.dxomark.com/Lenses/Nikon/AF-S-Nikkor-24-70mm-f-2.8G-ED-mounted-on-Nikon-D7100__865

Re: [darktable-dev] Lens correction with FF lenses used on APS-C

Thanks for the details Simon. I also thought about it a bit and had a reasoning similar to yours, that basically something designed for a specific acquisition chain will probably perform worse on an acquisition chain farther from its spec. However thinking about it more deeply, 2 things are

Re: [darktable-dev] Lens correction with FF lenses used on APS-C

In the database (in liblensfun-data package, file slr-canon.xml for Canon), you will find the various bodies / lenses. For each lens, there is a comment like: This allows you to know how the lens was calibrated. J-L Le sam. 23 févr. 2019 à 19:31, David Vincent-Jones a écrit : > On my system

Re: [darktable-dev] Lens correction with FF lenses used on APS-C

On my system the camera and correct lens is found by default which is what I want! David On 2019-02-23 9:12 a.m., Sturm Flut wrote: Hi, Am 23.02.19 um 16:34 schrieb Florian W: Thanks for your answers guys. Simon, I'm curious to know why to you it's not the best idea ?

Re: [darktable-dev] Lens correction with FF lenses used on APS-C

Hi, Am 23.02.19 um 16:34 schrieb Florian W: > Thanks for your answers guys. > > Simon, I'm curious to know why to you it's not the best idea ? (oversimplifying it a bit) Full-frame lenses are designed to deliver their full sharpness across the whole full-frame image circle. If I put a

Re: [darktable-dev] Lens correction with FF lenses used on APS-C

Thanks for your answers guys. Simon, I'm curious to know why to you it's not the best idea ? Le sam. 23 févr. 2019 16:19, Sturm Flut a écrit : > Hi, > > it does, as long as lensfun can find the lens in its database. I've been > using full-frame-only lenses on both my Nikon D750 (full-frame)

Re: [darktable-dev] Lens correction with FF lenses used on APS-C

Hi, it does, as long as lensfun can find the lens in its database. I've been using full-frame-only lenses on both my Nikon D750 (full-frame) and D7100 (APS-C) for years. (It's not the best idea, though, so I'm about to replace the D7100 with a second full-frame body). cheers, Simon Am

Re: [darktable-dev] Lens correction with FF lenses used on APS-C

I believe it does. Changing body type (full-frame instead of aps-c) changes geometry. Body type description is nothing more than just a file in /usr/share/lensfun/version_1 with cropfactor parameter being the only meaningful information used for geometry calculaton. Timur. On Sat, 2019-02-23 at

Re: [darktable-dev] Lens correction -- move image center feature?

heya, i had one or two shots in the past where i missed this feature, too (have an 8mm peleng fisheye). in my case it was mainly about straightening horizon lines or similar. i ended up doing these in hugin and forgot about it. other than that i think this is a very reasonable feature request.

Re: [darktable-dev] Lens Correction

Just for the records - as regards OpenSuse Leap problem is solved using darktable and lensfun from offical repos or 'graphics' repo (NOT graphics/darktable). Here below the complete bug issue https://bugzilla.opensuse.org/show_bug.cgi?id=1090686 Enjoy Maurizio 2018-04-24 23:06 GMT+02:00 Patrick

Re: [darktable-dev] Lens Correction

* Maurizio Paglia [04-24-18 16:29]: > Is it a stable build? > > Il mar 24 apr 2018, 20:06 Patrick Shanahan ha scritto: > > > * Maurizio Paglia [04-24-18 13:55]: > > > @ Frank > > > Tested your solution but still does not work. > > >

Re: [darktable-dev] Lens Correction

Is it a stable build? Il mar 24 apr 2018, 20:06 Patrick Shanahan ha scritto: > * Maurizio Paglia [04-24-18 13:55]: > > @ Frank > > Tested your solution but still does not work. > > Seems the only possibility is to downgrade lensfun from 0.3.2 to 0.3.1 > >

Re: [darktable-dev] Lens Correction

@ Frank Tested your solution but still does not work. Seems the only possibility is to downgrade lensfun from 0.3.2 to 0.3.1 I already opened a bug issue with Leap developers that already asked for more information. I will post further issue on the mailing list. Thank you for your kind effort.

Re: [darktable-dev] Lens Correction

Germano Massullo writes: > Il 23/04/2018 18:28, Maurizio Paglia ha scritto: >> Well, downgraded lensfun from 0.3.2 to 0.3.1 and now all works! > You probably should tell darktable maintainer to rebuild darktable > against new lensfun version I guess I had the same

Re: [darktable-dev] Lens Correction

Il 23/04/2018 18:28, Maurizio Paglia ha scritto: > Well, downgraded lensfun from 0.3.2 to 0.3.1 and now all works! You probably should tell darktable maintainer to rebuild darktable against new lensfun version ___ darktable

Re: [darktable-dev] Lens Correction

Well, downgraded lensfun from 0.3.2 to 0.3.1 and now all works! Maurizio 2018-04-23 17:23 GMT+02:00 Maurizio Paglia : > OpenSuse Leap > > 2018-04-23 17:00 GMT+02:00 Germano Massullo : > >> Il 23/04/2018 16:46, Maurizio Paglia ha scritto: >> > I do

Re: [darktable-dev] Lens Correction

OpenSuse Leap 2018-04-23 17:00 GMT+02:00 Germano Massullo : > Il 23/04/2018 16:46, Maurizio Paglia ha scritto: > > I do not compile dt from sources but install my distribution RPMs > > Fedora? > >

Re: [darktable-dev] Lens Correction

Il 23/04/2018 16:46, Maurizio Paglia ha scritto: > I do not compile dt from sources but install my distribution RPMs Fedora? ___ darktable developer mailing list to unsubscribe send a mail to

Re: [darktable-dev] Lens Correction

Thanks to all! @ Mark Feit - I noticed too that Camera and Lens are duly identified in the image data (lighttable) I do not compile dt from sources but install my distribution RPMs This evening I will try to downgrade lensfun to those recommended by my package manager and will let you know.

Re: [darktable-dev] Lens Correction

Dear list, I don't know much about lensfun, but I can confirm that in my setup (lensfun 0.3.2-6 package as supplied by Arch Linux, darktable built manually from the current darktable-2.4.x branch) the lens correction module actually fails to select the right settings for this picture (Nikon AF-S

Re: [darktable-dev] Lens Correction

On 04/23/2018 03:26 AM, sturmflut wrote: Could it maybe be possible that the lensfun database got corrupted on some systems? It's not just some systems and it's not a database problem.  I've had this problem for a long time and, figuring it was pilot error, never got around to digging around

Re: [darktable-dev] Lens Correction

Dear list, for what it's worth: I ran into a similar problem yesterday. Suddenly my Nikon 70-200/2.8 VR II lens was missing from the lens correction module while my D750 and other Nikon lenses were available. I remembered I had run "lensfun-update-data" last week and it had failed because one of

Re: [darktable-dev] Lens Correction

Found this on pixls.us https://discuss.pixls.us/t/lens-correction-module-camera-lens-not-found/2242 @ Daudi Amani - please give it a try. I am at work now so cannot carry on any sort of tests. I will try as soon at home Maurizio 2018-04-23 6:20 GMT+02:00 Daudi Amani : >

Re: [darktable-dev] Lens Correction

That's what I've been trying to tell people; I have the same problem. No seems to understand. On Sun, Apr 22, 2018 at 1:16 AM Maurizio Paglia wrote: > Hi, > my module 'lens correction' works no more. > I cannot see ANY camera brand in the combo list, it is empty... > Also

Re: [darktable-dev] lens correction / Fujifilm X-T2

Thanks for advise sudo lensfun-update-data did the job Regards, Marcus ___ darktable developer mailing list to unsubscribe send a mail to darktable-dev+unsubscr...@lists.darktable.org

Re: [darktable-dev] lens correction / Fujifilm X-T2

On Mon, Aug 7, 2017 at 9:19 AM, Marcus Bungert wrote: > I just got my new gear, moving from D600 to Fujifilm X-T2. > > I'm wondering that the X-T2 is not recognized by "lens correction" but the > lense. > The camera is listed as supported >

Re: [darktable-dev] Lens correction based on EXIF data on Sony cameras

On Sat, 8 Apr 2017 at 11:50 Kelvie Wong wrote: > I'm still investigating if TCA correcions are baked in even if they are > turned off in-camera; a preliminary test shows a difference of only about > +/- 0.0001, not sure that's significant or not (see attached diff; > generated

Re: [darktable-dev] Lens correction based on EXIF data on Sony cameras

Thanks, Matthias. On Sat, 8 Apr 2017 at 05:03 Matthias Andree wrote: 1. If the assessments of your references are true that TCA (LateralChromaticAberration) are always baked into the ARW then the lensfun data will have been measured with TCA pre-corrected by the camera

Re: [darktable-dev] Lens correction based on EXIF data on Sony cameras

Greetings, I have created a related ticket with the lensfun project: https://sourceforge.net/p/lensfun/bugs/78/ This really only matters for VignettingCorrection: 1. If the assessments of your references are true that TCA (LateralChromaticAberration) are always baked into the ARW then the

Re: [darktable-dev] Lens correction based on EXIF data on Sony cameras

On the plus side, distortion is not, and CA is relatively easy to correct. Vignetting is hard to manually correct with the current darktable modules, however, without doing some type of stacking of vignette modules or exposure with circular masks. I have a theory that with the corrections on,

Re: [darktable-dev] Lens correction based on EXIF data on Sony cameras

Am 07.04.2017 um 09:38 schrieb Heiko Bauke: > Hi, > > Am 05.04.2017 um 07:33 schrieb Kelvie Wong: >> I just realized that on my Sony a7R II (and this probably applies to all >> of the cameras in this series, probably even the NEX), if you have >> certain camera settings, some lens corrections are

Re: [darktable-dev] Lens correction

Oops. let's finish it this time : http://www.darktable.org/2013/07/have-your-lens-calibrated/ http://wilson.bronger.org/lens_calibration_tutorial/ Then it can be added to Darktable. On Thu, Dec 15, 2016 at 6:04 AM, François Tissandier < francois.tissand...@gmail.com> wrote: > Salut Marc > > I

Re: [darktable-dev] Lens correction

Salut Marc I think you need to gather the info for lensfun : On Thu, Dec 15, 2016 at 12:30 AM, Marc Mascré wrote: > Hi all, > > I got the sigma 18-35 f/1.8 lens. > In the lens correction module, my lens is not detected and it seems that > it did not exist. > > I would like to

Re: [darktable-dev] Lens correction

Hello, Marc Mascré wrote: > I would like to help by giving you all informations you need to add it. > But I have no idea what and how to do. DT uses LensFun for lens correction. I think you should turn the question to the developers team of LensFun. Please read here: