[Lensfun-users] New tutorial

I prepared a new calibration tutorial at http://wilson.homeunix.com/lens_calibration_tutorial/ If you think it's worth it, please refer to it in LensFun's own documentation. Thank you! -- Put Bad Developers to Shame Dom

Re: [Lensfun-users] Adobe Lens Profiles - success

This is certainly good work but I wonder whether this hassle is necessary. One could do this: * Create a 300x200 pixel array * For each pixel, calculate the distance from the centre r * For each pixel, calculate the "amount of correction" according to the Adobe profile z. E.g. for distortion, t

[Lensfun-users] About aspect ratio

There is a feature request about adding the aspect ratio, see http://developer.berlios.de/feature/?func=detailfeature&feature_id=5134&group_id=9034 I wonder whether this is not only a nice feature but actually necessary. According to

[Lensfun-users] PTLens model wrong?

I think LensFun incorrectly implements the PTLens model. According to http://wiki.panotools.org/Lens_correction_model#Lens_distortion_a.2C_b_.26_c_parameters the "d" parameter is 1-(a+b+c). However, LensFun just sets it to 1. I don't know yet whether the PTLens model is wrongly implements, or i

Re: [Lensfun-users] Adobe Lens Profiles - success

I had no success. The fit didn't work. I assume that one cannot fit one polynomial with another one because they are orthogonal. But I'm not totally sure because I didn't investigate it thoroughly. I think the way to go is to include Adobe's formulae into LensFun. Should be quite easy. Howeve

Re: [Lensfun-users] Adobe Lens Profiles - again

Actually, I think the Adobe document is simply buggy. They really say that they distort the image. They applying the polynomials for transforming from the "ideal" image to the "real" image. Which is wrong, of course. And there are some other errors as well. It's pretty irritating to me.

[Lensfun-users] Image gamma vs. anit-vignetting

Should the anti-vignetting data in lensfun's database refer to images with linear gradient curves (like dcraw's "-4" parameter) or to BT.709-based image data? I think this makes a difference, although I'm not sure. -- Put

Re: [Lensfun-users] Calibration method question

I updated my tutorial because you're not the only one having trouble with finding suitable buildings: It is okay if you take distortion pictures at smaller distances. Avoid distances smaller than one metre though. Only a few lenses exhibit a strong distance-dependence of distortion and TCA. Tak

Re: [Lensfun-users] Adobe Lens Profiles - success

FWIW, I've had no success with such a fit. The resulting polynomial was very inaccurate. But time ran out and I didn't have a close look at it. Maybe I look at it again sometime. But I totally agree that the way to go is to implement the models in LensFun. -

[Lensfun-users] ANN: New profiling service

You can upload calibration photographs at http://wilson.homeunix.com/calibration and let me handle the rest. -- Put Bad Developers to Shame Dominate Development with Jenkins Continuous Integration Continuously Automate Bui

Re: [Lensfun-users] Urgent question about the database of Lensfun

The LensFun code nomenclature is misleading. While one wants to transform a distorted picture into an undistorted one, one transforms an undistorted radius into a distorted one with the direct polynomial formular. -- Put

Re: [Lensfun-users] default correction

LensFun doesn't sharpen images. This may be an artifact introduced by digikam. Have you uploaded sample pictures to me? If so, what was wrong with the results? And what was the lens model name? -- Put Bad Developers t

Re: [Lensfun-users] a,c TCA correction parameters

LensFun doesn't support the complete tca_correct model. But my calibrate.py indeed uses one parameter less than possible with LensFun. In my experience, this is fully sufficient. LensFun doesn't have a concept of defaults or overrides. You will see all data duplicated. ---

Re: [Lensfun-users] Adobe Lens Profiles - success

But you can do it only if the Adobe LCP file contains not more than two parameters. However, for my Sony NEX lenses, all three are used always. (And for the general case, there are even seven parameters in the LCP.) -- P

Re: [Lensfun-users] Agisoft Lens -> lensfun

I don't think that this is possible. Agisoft Lens seems to use the same model as Adobe, which is incompatible with LensFun. -- Put Bad Developers to Shame Dominate Development with Jenkins Continuous Integration Continuou

Re: [Lensfun-users] Calibration method question

You can use the night sky calibration for any lens, but for smaller viewframes, identifying enough stars over the whole image is difficult I suspect. The multi-image method is always possible but I find it rather tedious. Maybe a matter of taste.

Re: [Lensfun-users] About aspect ratio

I think the last paragraph in my posting is wrong. However, I still wonder how lens calibration data is applied if the camera used for calibration and the camera used for the picture to be corrected don't share the same aspect ratio. Can somebody answer this? --

Re: [Lensfun-users] Canon S100

Note that dcraw does not use LensFun. You must use digiKam, darktable, Gimp, rawtherapee etc to benefit from LensFun support of your camera. dcraw can only correct the chromatic aberration and does so if you pass the correction parameters manually. ---

Re: [Lensfun-users] Canon S100

Use the tutorial at http://wilson.homeunix.com/lens_calibration_tutorial/ For the mount, use the name "canonS100", and call the lens "Standard". -- Put Bad Developers to Shame Dominate Development with Jenkins Continuous

[Lensfun-users] Vignetting interpolation

At http://wilson.homeunix.com/lens_calibration_tutorial/vignetting_interpolation.html I summarised my findings about the interpolation of vignetting parameters. I really think we have a problem here. I also think that the IDW algorithm might not be perfect but is a very good alternative, maybe ev

[Lensfun-users] Case-insensitiveness

I wonder whether it is possible to streamline character case in LensFun's database. I mean this for cameras, mounts, and lenses. Currently, there are some inconsistencies with this respect. Does case matter anywhere in LensFun's database? Does this depend on whether the calling program does fu

[Lensfun-users] About interpolation ...

I think it is sensible to interpolate lengths in the reciprocal space. This means that LensFun should not use focal length f and distance d, but the reciprocal values 1/f and 1/d. The algorithms would not change much: You just need to substitude f and d by 1/f and 1/d in both the function paramete

Re: [Lensfun-users] Multi aspect ratio sensor

The question is how the crop factor changes. From the diagrams it seems that it remains constant. In this case, you can safely use the 4:3 measurement for all aspect ratios (except for the 1:1 case). For the 1:1 case, one could add a camera variant with the same camera model name and the increa

[Lensfun-users] Scaling for different cropfactor wrong?

I think LensFun scales the coordinate system wrongly if there is a calibration for cropfactor F1 but an image with cropfactor F2>F1. Malcolm Gillies has played a little bit with the Adobe models and published this in this forum, and so I came to this conclusion. Imagine a distorted image of a c

Re: [Lensfun-users] Improved matching for fixed-lens cameras.

This is already a feature request for darktable: http://darktable.org/redmine/issues/9028 (At the same time, the LensFun database should be inspected for fixed-lens cameras where the lens model name is not yet "Standard".) -

Re: [Lensfun-users] Improved matching for fixed-lens cameras.

The camera must produce RAW files, otherwise, Darktable cannot correct vignetting, because the conversion to *linear* colourspace happend after the LensFun corrections. And anti-vignetting works only in linear colourspace. If your camera produces RAW files, you can use my script to get the neces

Re: [Lensfun-users] Multi aspect ratio sensor

Lensfun help the calling application (digiKam in your case) by calculating the necessary crop. But I have no experience whether and how well digiKam makes use of it. -- Put Bad Developers to Shame Dominate Development wit

[Lensfun-users] Drop CCI profiles?

The source code of LensFun says: "Perhaps even CCI might be removed from lensfun at one point in future if there won't be enough interest in it and the standards information couldn't be gathered." I think this is the case, and we should remove the code. Having it in the API makes a promise tha

Re: [Lensfun-users] lensfunpy

You can't learn anything from the sign in both images, I'm afraid. You have to take the derivative of (r_d - r_u) / r_u with respect to r_u for this. -- Put Bad Developers to Shame Dominate Development with Jenkins Continu

Re: [Lensfun-users] default correction

The sharpening is something digiKam does. LensFun has nothing to do with it. The black borders are correct. The image just needs to be cropped afterwards. I'm about to do the calibration of this lens but haven't finished yet. Your observation that the correction is wrong for close-up pictur

Re: [Lensfun-users] lensfunpy

Possibly it could be of use for Lensfun's homepage someday in the future. One could present a datasheet for each lens, showing its properties. I haven't look deeply into the code, but possibly one should use the derivative of distortion displacement for the plot rather than the displacement itse

Re: [Lensfun-users] Bug? Canon EF 75-300mm f/4-5.6 III ?

I it certainly smelly. It was sumbitted together with two other lenses, see http://developer.berlios.de/patch/?func=detailpatch&patch_id=3261&group_id=9034 I try to contact the patch submitter. -- Put Bad Developers to

Re: [Lensfun-users] About double entries

The polynomial fits are never accurate over the whole radius interval. Therefore, one optimises them for the borders because the direct comparison of lines in the picture with the (perfectly straight) borders is most critical. The PTLens maintainer optimises only the borders according to his websi

Re: [Lensfun-users] Scaling for different cropfactor wrong?

I was wrong. I cannot produce this problem, so it is not there. -- Put Bad Developers to Shame Dominate Development with Jenkins Continuous Integration Continuously Automate Build, Test & Deployment Start a new project n

[Lensfun-users] Hidden feature?

Apparently, there is a tag in LensFun allowing for decentred lenses: Did anybody know that? :-) Never tested it though ... maybe it is undocumented because it doesn't work. -- Put Bad Developers to Shame Dominate D

Re: [Lensfun-users] lensfunpy

I mean http://en.wikipedia.org/wiki/Derivative You don't plot x(r) but x'(r). This way, the colour blue means "barrel" and red means "pincushion" (or the other way round). Look at the section "How to read a distortion graph" on . And look at the

Re: [Lensfun-users] Urgent question about the database of Lensfun

All your assumptions are correct. Note that Ru is measured in the original image (taken by the camera), whereas Rd is measured in the destination picture (which is supposed to be undistorted). -- Put Bad Developers to Sha

[Lensfun-users] Primary keys of lenses

Currently, all mounts of a lens need to be taken into account for uniquely identifying a lens. This is because of the compact cameras, for which the lenses are called "Standard". Thus, the combination of maker, model, and cropfactor is not enough to make a database entry unique. On the other h

Re: [Lensfun-users] Improved matching for fixed-lens cameras.

My camera gives also a wrong focal distance ... I think it is also 0. Maybe it is darktable bahaviour or that of the EXIF library. Unfortunately, only a few cameras return the focal distance. And even for them, only a few lenses do.

Re: [Lensfun-users] lensfunpy

I plot (with gnuplot) plot [0:1.8*12][-0.5:1] (3*0.03083*(x/12.)**2 - 2*0.0633*(x/12.) + 0.01093)*12 and get good results. 12 is the half-height of the sensor in mm. -- Put Bad Developers to Shame Dominate Development

[Lensfun-users] About double entries

If we have an entry for cropfactor 1.5 and someone submits an entry for the very same lens with cropfactor 1.0, is the first deleted? Crop 1.0 data may be inaccurate at the borders of cropfactor 1.5, so there is a mild reason for keeping both. However, at least in Darktable, this does not work.

Re: [Lensfun-users] Bug? Canon EF 75-300mm f/4-5.6 III ?

He said that he will take new test photos when he has the time for it. I will remove the entry till then. I keep the other two he submitted, though. -- Put Bad Developers to Shame Dominate Development with Jenkins Contin

Re: [Lensfun-users] Improved matching for fixed-lens cameras.

If vignetting has been already corrected in the camera, the remaining vignette cannot be reliably corrected. Vignetting correction *must* work on *linear* sensor data. That said, unless vignetting is not over-corrected, everything is fine. The human eye cannot see slightly under-corrected vigne

Re: [Lensfun-users] GoPro hero support?

GoPro hero in connection with LensFun means that somebody takes test pictures and makes the calibration. The result of the calibration is then incorporated into LensFun's database. See http://wilson.bronger.org/calibration for futher information. -

Re: [Lensfun-users] About double entries

I found at least two double entries in LensFun. They are from SVN version 1. So I guess Andrew designed it this way. Thus: Don't remove entries just because the lens is re-calibrated with a smaller cropfactor. Question is how depending programs can make use of is. Neither Darktable nor Rawstu

Re: [Lensfun-users] lensfunpy

The 1.8 is approx. sqrt(1.5**2 + 1**2), i.e. half-diagonal in normalised coordinates. And half-height is 12mm, and this is the factor between normalised coordinates and real-world coordinates since half-height is 1 in normalised coordinates by definition. Thus, the half-diagonal of the sensor is

Re: [Lensfun-users] GoPro Lens definition help

l file. But it doesn't work. > > In both digikam and GIMP I can get it to load up: > Make GoPro > Model HD2 > > But then the lens list is empty. There may be other problems, too, but at least the cropfactor of the camera is missing. Tschö, Torsten. -- Torsten Bronger

Re: [Lensfun-users] GoPro Lens definition help

sfun, and send a copy of the XML to you. Tschö, Torsten. -- Torsten BrongerJabber ID: torsten.bron...@jabber.rwth-aachen.de or http://bronger-jmp.appspot.com -- Start Your Social Netw

Re: [Lensfun-users] GoPro Lens definition help

rance. Tschö, Torsten. -- Torsten BrongerJabber ID: torsten.bron...@jabber.rwth-aachen.de or http://bronger-jmp.appspot.com -- Start Your Social Network Today - Download e

Re: [Lensfun-users] Olympus E-600

Hallöchen! Jan Niklas Fingerle writes: > the Olympus E-600 seems not to be included in the DB as of > 0.2.8. It's a clone of the E-620[1], so you could just copy that > entry. Okay, done. Tschö, Torsten. -- Torsten BrongerJabber ID: torsten.bron...@jabber.

Re: [Lensfun-users] Image artefacts as a result of vignetting correction

Hallöchen! Jan Wolter writes: > [...] > > Does anyone has the same problem? Or can reproduce it with my raw > file, which you can download here: > https://www.dropbox.com/s/oa717wk8w7vkgmy/P7057624.ORF I cannot reproduce it with Darktable. Maybe a Digikam problem? Tschö, Torste

Re: [Lensfun-users] Lensfun integration with ImageJ

rnatives to working with > Lensfun that don't involve calling the API, e.g. a command-line > tool. No, there is no command-line tool. (Only some toy-level programs.) Tschö, Torsten. -- Torsten BrongerJabber ID: torsten.bron...@jabber.rwth-aachen.de

Re: [Lensfun-users] Distortion models in astronomy

ymore since december. Tschö, Torsten. -- Torsten BrongerJabber ID: torsten.bron...@jabber.rwth-aachen.de or http://bronger-jmp.appspot.com -- _

Re: [Lensfun-users] Missing Nikon D610 in supported cameras

n of Lensfun since dec 2013, so it will be included into the upcoming release. If you need assistance for including the camera locally on your computer, contact me. Tschö, Torsten. -- Torsten BrongerJabber ID: torsten.bron...@jabber.rwth-aachen.de

Re: [Lensfun-users] Calibration for OLYMPUS M.14-42mm F3.5-5.6 II R

lens are already in Lensfun, see <http://wilson.bronger.org/lensfun_coverage.html>. Or is there a difference between the ED and non-ED version? Tschö, Torsten. -- Torsten BrongerJabber ID: torsten.bron...@jabber.rwth-aachen.de

Re: [Lensfun-users] Olympus Stylus1 - typo in model string in lensfun db?

my opinion, Digikam should remove this check. In case of the Stylus 1, the EXIF name and the marketing name simply do not match. Thus, I fixed it now for the Stylus 1 in Lensfun's database, but the result is an unnecessary redundancy: Stylus1 Stylus 1 Tschö, Torsten. -- Tors

Re: [Lensfun-users] lfMLstr encoding

Hallöchen! Maik Riechert writes: > which encoding is used in lfMLstr strings in lensfun? UTF-8? Yes. Tschö, Torsten. -- Torsten BrongerJabber ID: torsten.bron...@jabber.rwth-aachen.de or http://bronger-jmp.appspot.

Re: [Lensfun-users] Recent changes

tests later. Tschö, Torsten. -- Torsten BrongerJabber ID: torsten.bron...@jabber.rwth-aachen.de or http://bronger-jmp.appspot.com -- Comprehensive Server Monitoring with Site24x7. Monitor

Re: [Lensfun-users] Canon EF 400 f5.6L lens profile

Hallöchen! eric writes: > Hello all, if is a lens profile for the canon ef 400mm f/5.6L Thanks for your contribution! For exiv2 lens model name and selection of the best TCA entry, would you mind uploading your image set at <http://wilson.bronger.org/calibration>? Tschö, Torsten. --

Re: [Lensfun-users] lensfun.sourceforge.net/usage isn't up to date

--recursive lensfun src from the hugin's sources root directory yields no code anymore. Tschö, Torsten. -- Torsten BrongerJabber ID: torsten.bron...@jabber.rwth-aachen.de or http://bronger-jmp.appspo

Re: [Lensfun-users] lensfun.sourceforge.net/usage isn't up to date

Hallöchen! Carl von Einem writes: > Torsten Bronger wrote on 12.02.15 08:01: > >> Lensfun usage was dropped in the following revision: >> >> changeset: 6588:02283d5b9820 >> user:tmodes >> date:Wed Apr 30 18:16:35 2014 +0

Re: [Lensfun-users] lensfun.sourceforge.net/usage isn't up to date

nsfun in > hugin just to make sure. You may do so. But first I recommend that you compile Hugin's current source code and check the features you mentioned. Tschö, Torsten. -- Torsten BrongerJabber ID: torste

Re: [Lensfun-users] lensfun.sourceforge.net/usage isn't up to date

of an erroneous calculation of the focal length, which still is in Hugin: I filed a bug report, and https://bugs.launchpad.net/hugin/+bug/1307457 certainly demonstrates well why don't like to follow-up on the Hugin mailing list. Tschö, Torsten. -- Torsten Bronger

[Lensfun-users] Database lookup problem

Hallöchen! I just added a test that does a database lookup and fails currently. I think that the "M3517" in the lens model name is misinterpreted as a focal length by lensfun, but I haven't really investigated it yet. I'll open a proper bug report tomorrow. Tschö, Torsten.

Re: [Lensfun-users] Post distortion correction image parameters

nd Lensfun even use the same distortion models. Tschö, Torsten. -- Torsten BrongerJabber ID: torsten.bron...@jabber.rwth-aachen.de or http://bronger-jmp.appspot.com -- Download BIRT iHub

Re: [Lensfun-users] Nikkor AF 28mm f/1.4D profile

Hallöchen! Maik Riechert writes: > I got a new profile for you: > > [...] Thank you, I included your data into lensfun's database. Tschö, Torsten. -- Torsten BrongerJabber ID: torsten.bron...@jabber.rwth-aachen.de or http://bronger-j

Re: [Lensfun-users] Lens correction profiles for different aspect ratios?

in one case (I cannot remember the model name), there were different aspect ratios but the same crop factor. Then, the same camera and lens model can be used for all aspect ratios. (This is certainly something to re-visit for the next database overhaul ...) Tschö, Torsten. -- Torsten BrongerJa

Re: [Lensfun-users] Manually set lens for LensFun

camera/lens is not found: Lensfun contains only calibration data for this lens with cropfactor 2.0, but you need 1.0. Please upload a sample image at http://wilson.bronger.org/calibration according to the instructions there. Tschö, Torsten. -- Torsten BrongerJabber ID: torsten.bron.

Re: [Lensfun-users] Store the Exif Id inside the XML

not complete, or because the EXIF data is ambiguous. Besides, it is already possible to locally add lens entries with a lens model name like "(123)". Tschö, Torsten. -- Torsten BrongerJabber ID: torsten.bron...@jabber.rwth-aachen.de

[Lensfun-users] Lensfun issue: calibration = lens

ection for his lens (which he had before). This must not happen. Tschö, Torsten. -- Torsten BrongerJabber ID: torsten.bron...@jabber.rwth-aachen.de or http://bronger-jmp.appspot.com -

[Lensfun-users] Lensfun issue: aliases

Hallöchen! We need alias names for cameras and lenses. How could be dealt with the fact that a certain camera models have different names on different continents? Tschö, Torsten. -- Torsten BrongerJabber ID: torsten.bron...@jabber.rwth-aachen.de or http

[Lensfun-users] Lensfun issue: calibration = lens

ection for his lens (which he had before). This must not happen. Tschö, Torsten. -- Torsten BrongerJabber ID: torsten.bron...@jabber.rwth-aachen.de or http://bronger-jmp.appspot.com -

[Lensfun-users] Lensfun issue: Handling of invalid values

. Still, Lensfun should return something that can be safely cast to integer. Alternatively, one can force the calling programs to change their checks. In any case, Lensfun should adopt well-defined and documented behaviour for such cases. Tschö, Torsten. -- Torsten BrongerJabber ID

[Lensfun-users] Lensfun issue: RAW modi of cameras

model and pixel dimensions. Tschö, Torsten. -- Torsten BrongerJabber ID: torsten.bron...@jabber.rwth-aachen.de or http://bronger-jmp.appspot.com -- Dive into the World of Parallel P

[Lensfun-users] Lensfun issue: Getting rid of bogus camera mounts

Tschö, Torsten. -- Torsten BrongerJabber ID: torsten.bron...@jabber.rwth-aachen.de or http://bronger-jmp.appspot.com -- Dive into the World of Parallel Programming The Go Parallel Website, spo

[Lensfun-users] Lensfun issue: The API of lfModifier is bad

. How can one design the API to make such changes painless? The old API must remain parallely, which should not be a problem. Tschö, Torsten. -- Torsten BrongerJabber ID: torsten.bron...@jabber.rwth-aachen.de or http://bronger-jmp.appspot.com ---

[Lensfun-users] Lensfun issue: Lack of primary keys in the database

(numerical?) ID which is unique, even with local XML files present, and never ever changes. Tschö, Torsten. -- Torsten BrongerJabber ID: torsten.bron...@jabber.rwth-aachen.de or http://bronger-jmp.appspot.com

Re: [Lensfun-users] Lensfun issue: calibration = lens

Hallöchen! m...@sebastiankraft.net writes: > Torsten Bronger writes: > >> Let's start with the toughest one: Lensfun makes no distinction >> between lens and calibration. [...] Lensfun is currently unable >> to take calibration data from different calibration e

Re: [Lensfun-users] Lensfun issue: aliases

Hallöchen! m...@sebastiankraft.net writes: > Am 2015-02-25 21:33, schrieb Torsten Bronger: > >> We need alias names for cameras and lenses. How could be dealt >> with the fact that a certain camera models have different names >> on different continents? > > H

Re: [Lensfun-users] Lensfun issue: Lack of primary keys in the database

Hallöchen! m...@sebastiankraft.net writes: > Am 2015-02-25 21:36, schrieb Torsten Bronger: > >> [...] Ideally, every camera and lens should have a (numerical?) >> ID which is unique, even with local XML files present, and never >> ever changes. > > Maybe a good i

Re: [Lensfun-users] Lensfun issue: aliases

Hallöchen! m...@sebastiankraft.net writes: > Am 2015-02-25 21:33, schrieb Torsten Bronger: > >> [...] How could be dealt with the fact that a certain camera >> models have different names on different continents? > > How is that handled curently? I remember some workar

Re: [Lensfun-users] Lensfun issue: The API of lfModifier is bad

API to make such changes painless? > > Have to take a closer look if this will really work in our > context, Okay, I stay tuned. Tschö, Torsten. -- Torsten BrongerJabber ID: torsten.bron...@jabber.rwth-aachen.de or http://bronger-jmp.appspot.com

Re: [Lensfun-users] Generating TCA data for existing correction profiles.

#x27;d recommend to use the slider positions and generate TCA entries like Older darktable versions swapped red and blue, so check the result! Tschö, Torsten. -- Torsten BrongerJabber ID: torsten.bron...@jabber.rwth-aachen.de

Re: [Lensfun-users] Lensfun issue: Lack of primary keys in the database

better to discard all entries without an ID and force the user to update their local files? Tschö, Torsten. -- Torsten BrongerJabber ID: torsten.bron...@jabber.rwth-aachen.de or http://bronger-jmp.appspot.com

Re: [Lensfun-users] Lensfun issue: calibration = lens

uture. But we should at least create a Wiki > Page or Bug to take track of the ideas for a new database > format. Same for the alias issue. I did so: https://sourceforge.net/p/lensfun/wiki/Home/ By the way, not only Sebastian and me may participate. ;-) Tschö, Torsten. -- Torsten Brong

Re: [Lensfun-users] Generating TCA data for existing correction profiles.

Hallöchen! junkyardspar...@yepmail.net writes: > My question now is if the TCA correction really need to be at the > same focal lengths as the distortion corrections. No, it needn't. Tschö, Torsten. -- Torsten BrongerJabber ID: torsten.bron...@jabber.rwt

Re: [Lensfun-users] Lensfun issue: The API of lfModifier is bad

fExt... classes with their parents. The two GLib types here are GPtrArray and gchar. What do you think of this idea: Rename gchar -> char and GPtrArray -> void in the declarations moved to lensfun.h.in and some other places, and static-typecast them back to the GLib types when

Re: [Lensfun-users] Lensfun issue: The API of lfModifier is bad

ble. Of course, one may add optional parameters to the methods. But appending fields to a struct, or adding a Prepare...() method, is better in my opinion. Tschö, Torsten. -- Torsten BrongerJabber ID: torsten.bron...@jabber.rwt

[Lensfun-users] Using Adobe lens profiles

her LCP or Lensfun data is in action. Please give us feedback about the functionality and accuracy so we can evaluate this possible addition. If you have access to a Lightroom or Photoshop version, please try to compare the results. You may use Lensfun's bugtracker for feedback. Thank you

Re: [Lensfun-users] calibrated lens Sigma 12-24mm

Hallöchen! muellst writes: > I did calibrate the vignetting of my new > > Sigma 12-24mm > f/4.5-5.6 EX DG ASPHERICAL HSM > > lens and like to share my results. Thank you for the data! Which camera model was used? Regards, Torsten. -- Torsten BrongerJabbe

Re: [Lensfun-users] Lens profile for Panasonic 14-140mm f/3.5-5.6

Yes, please upload them at http://wilson.bronger.org/calibration Regards, Torsten Bronger. -- Torsten BrongerJabber ID: torsten.bron...@jabber.rwth-aachen.de -- Don't Limit Your Business. Reach for the Cl

Re: [Lensfun-users] Add more information in lensfun

ut I plan to extend this information because some cameras are able to operate in different modes (resolutions, aspect ratios). What sensor data exactly do you have in mind? Regards, Torsten. -- Torsten BrongerJabber ID: torsten.bron...@jabber.rw

Re: [Lensfun-users] Calibration with checkerboard

hieved with distances larger than 10m. At the same time, the highest accuracy provide uninterrupted horizontal features that span the whole image width. This is why I urge people to take pictures of modern buildings. Regards, Torsten. -- Torsten BrongerJabber ID: torsten.bron...@jabber.rwt

Re: [Lensfun-users] TCA overdone for Sony SAL-16105?

ages at http://wilson.bronger.org/calibration Regards, Torsten. -- Torsten BrongerJabber ID: torsten.bron...@jabber.rwth-aachen.de -- Don't Limit Your Business. Reach for the Cloud. GigeNET's Cloud Solutions provide

Re: [Lensfun-users] TCA overdone for Sony SAL-16105?

st open a feature request. Regards, Torsten. -- Torsten BrongerJabber ID: torsten.bron...@jabber.rwth-aachen.de -- Don't Limit Your Business. Reach for the Cloud. GigeNET's Cloud Solutions provide you with

Re: [Lensfun-users] TCA overdone for Sony SAL-16105?

'm also not a fan of taking distance into account, not even for vignetting.) Regards, Torsten. -- Torsten BrongerJabber ID: torsten.bron...@jabber.rwth-aachen.de -- Don't Limit Your Business. Reach for the Cloud.

Re: [Lensfun-users] TCA overdone for Sony SAL-16105?

ly moderated. But postings from non-members as well as postings larger than 40kB are moderated. Regards, Torsten. -- Torsten BrongerJabber ID: torsten.bron...@jabber.rwth-aachen.de -- Don't Limit Your Busine

Re: [Lensfun-users] Calibration with checkerboard

abase entry because it had been taken at close focus, and did not work *at* *all* for images taken at a large distance. Tschö, Torsten. -- Torsten BrongerJabber ID: torsten.bron...@jabber.rwt

Re: [Lensfun-users] Add more information in lensfun

. Indeed, but this will take some time. Other things are more important, I'm afraid. > Maybe a collaboration with the impressive effort of http://www.digicamdb.com > ? Nice site, but their figures

Re: [Lensfun-users] Calibration with checkerboard

use the aperture. The focal distance is set to infinity (unless the creator of the images tell differently). Tschö, Torsten. -- Torsten BrongerJabber ID: torsten.bron...@jabber.rwth-aachen.de -- __

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