Re: [Darktable-users] Editing exif

2015-12-05 Thread Roman Lebedev
On Sat, Dec 5, 2015 at 4:03 AM, Anton Aylward wrote: > On 12/04/2015 05:14 PM, Pedro Côrte-Real wrote: >>> > Joe-Random edits can be destructive, but specific edits can be purposeful. >> This isn't a matter of "wouldn't it be good if we could edit raw >> files", it possibly would be. It's a matter

Re: [Darktable-users] Numbers of images, wish

2015-12-05 Thread Pedro Côrte-Real
On Fri, Dec 4, 2015 at 11:50 PM, Jean-Luc CECCOLI wrote: > Do you know of some place where I could find explanations on why modifying > information in raw files with tools that pretend to have been made for this > can be unsafe ? > > Could it be because the exif standard is not a standard at all (

Re: [Darktable-users] Editing exif

2015-12-05 Thread Pedro Côrte-Real
On Sat, Dec 5, 2015 at 1:03 AM, Anton Aylward wrote: > On 12/04/2015 05:14 PM, Pedro Côrte-Real wrote: >>> > Joe-Random edits can be destructive, but specific edits can be purposeful. >> This isn't a matter of "wouldn't it be good if we could edit raw >> files", it possibly would be. It's a matter

Re: [Darktable-users] Editing exif (was: Numbers of images, wish

2015-12-05 Thread Pedro Côrte-Real
On Fri, Dec 4, 2015 at 11:58 PM, wrote: > What about Canon CR2 images edited by DPP (Canon's own software)? > > I often have to use DPP (in vmware and Win 7) to view the focus points > used by the camera to try to understand where/how I screwed up. I > usually try not to edit but they've been oc

Re: [Darktable-users] Editing exif (was: Numbers of images, wish

2015-12-05 Thread Pedro Côrte-Real
On Sat, Dec 5, 2015 at 3:31 AM, Patrick Shanahan wrote: > I have a foolish habit of making backup copies before altering an image, > but have never lost an image that I can attribute to exiftool or exiv2 and > that probably amounts to much greater than 500k images. > > Nikon d70, d200, d7100, d720

Re: [Darktable-users] tethering / misc. questions

2015-12-05 Thread Tobias Ellinghaus
Am Donnerstag, 3. Dezember 2015, 00:18:44 schrieb Dr. Johannes Zellner: > Hi, > > I've a couple of questions about tethering: > > 1. I didn't manage to get the focussing arrows in live view to work. > Everything else works fine. Any ideas what could be the problem? For me it sometimes works and

Re: [Darktable-users] Numbers of images, wish

2015-12-05 Thread Tobias Ellinghaus
Am Freitag, 4. Dezember 2015, 00:28:43 schrieb Jean-Luc CECCOLI: > In fact, I think that Philippe is right : adding RPD capabilities to DT > would be an excellent idea. > > ATM, DT is absolutely not capable of what RPD does. Yes. > RPD can import files from the memory stick to a location, Dt onl

Re: [Darktable-users] Editing exif (was: Numbers of images, wish

2015-12-05 Thread Anton Aylward
On 12/04/2015 10:31 PM, Patrick Shanahan wrote: > I have a foolish habit of making backup copies before altering an image, > but have never lost an image that I can attribute to exiftool or exiv2 and > that probably amounts to much greater than 500k images. Although I'm not at that scale of # of i

Re: [Darktable-users] Editing exif (was: Numbers of images, wish

2015-12-05 Thread Pedro Côrte-Real
On Sat, Dec 5, 2015 at 1:45 PM, Anton Aylward wrote: > Although I'm not at that scale of # of images, I agree. > I'd NEVER try altering the DATA even with a vendor's tool! > But the exif fields are another matter. The opposite is true. In most formats changing the data would be much easier, it's

Re: [Darktable-users] Editing exif

2015-12-05 Thread Anton Aylward
On 12/05/2015 06:23 AM, Pedro Côrte-Real wrote: > Never edit raws, never convert to DNG, just edit XMPs when you need to > make changes to the metadata. Exiftool can be used to make the XMP > changes too. Oh? While exiftool can report, I've tried tried using it to make changes to xmp files for the

Re: [Darktable-users] Editing exif

2015-12-05 Thread Pedro Côrte-Real
On Sat, Dec 5, 2015 at 1:55 PM, Anton Aylward wrote: > Oh? > While exiftool can report, I've tried tried using it to make changes to > xmp files for the same geographic changes I would make to the exif data > of other files and and it fails to do so. > > Perhaps you'd care to detail your assertion

Re: [Darktable-users] tethering / misc. questions

2015-12-05 Thread Chester
Herwe (D600/800), the focus arrows are always greyed El 05/12/15 a las 09:51, Tobias Ellinghaus escribió: Am Donnerstag, 3. Dezember 2015, 00:18:44 schrieb Dr. Johannes Zellner: Hi, I've a couple of questions about tethering: 1. I didn't manage to get the focussing arrows in live view to work

Re: [Darktable-users] Editing exif

2015-12-05 Thread Roman Lebedev
On Sat, Dec 5, 2015 at 4:57 PM, Anton Aylward wrote: > On 12/05/2015 06:23 AM, Pedro Côrte-Real wrote: >> Never edit raws, never convert to DNG, just edit XMPs when you need to >> make changes to the metadata. Exiftool can be used to make the XMP >> changes too. > > Oh? > While exiftool can report

Re: [Darktable-users] Numbers of images, wish

2015-12-05 Thread Anton Aylward
On 12/05/2015 06:13 AM, Pedro Côrte-Real wrote: > EXIF is pretty standard and works fine. The problem is the raw files > themselves. There's no standard to them. Each manufacturer comes up > with their own specific way, usually based on TIFF but not always, to > store the information of the image,

Re: [Darktable-users] Numbers of images, wish

2015-12-05 Thread Pedro Côrte-Real
On Sat, Dec 5, 2015 at 2:25 PM, Anton Aylward wrote: > I'm not going to argue with that in the generic, only the specific. > *SOME* vendors have adequately defined their formats and publicised the > same. This is simply not true. There isn't a single manufacturer that I know of that publishes a f

Re: [Darktable-users] Numbers of images, wish

2015-12-05 Thread Anton Aylward
On 12/05/2015 09:47 AM, Pedro Côrte-Real wrote: > You can't "rearrange" the format if you don't understand it. We just > don't for raw formats, not completely. Again, speaking as someone who once wrote compilers and supporting tools, that is not so. A link editor does not need to know about that

Re: [Darktable-users] Numbers of images, wish

2015-12-05 Thread Pedro Côrte-Real
On Sat, Dec 5, 2015 at 3:24 PM, Anton Aylward wrote: > Again, speaking as someone who once wrote compilers and supporting > tools, that is not so. Your analogy to that problem space just doesn't hold here. > A link editor does not need to know about that data its moving. in the > case of a comp

Re: [Darktable-users] Numbers of images, wish

2015-12-05 Thread Anton Aylward
On 12/05/2015 11:15 AM, Pedro Côrte-Real wrote: > It doesn't work like that. Assume a simple TIFF-based format like the > Sony one. Suppose you come across a 16bit value encoded as a standard > TIFF_SHORT that says 15346 (made up number). You don't know what that > number means so when you rewrite

Re: [Darktable-users] Numbers of images, wish

2015-12-05 Thread Pedro Côrte-Real
On Sat, Dec 5, 2015 at 4:32 PM, Anton Aylward wrote: > There is no need for a complete understanding of every field in every > possible file, only an adequate understanding of the ones I use. You need to understand *every* field in the files you do use, and there is no format that is that well un

Re: [Darktable-users] Editing exif

2015-12-05 Thread darktable
On Sat, 5 Dec 2015 11:23:24 + Pedro Côrte-Real wrote: >Never edit raws, never convert to DNG, just edit XMPs when you need >to make changes to the metadata. Exiftool can be used to make the XMP >changes too. Can you suggest some "good" xmp editor? My current purpose would be for the IPTC d

Re: [Darktable-users] Editing exif

2015-12-05 Thread Pedro Côrte-Real
On Sat, Dec 5, 2015 at 4:50 PM, wrote: >>Never edit raws, never convert to DNG, just edit XMPs when you need >>to make changes to the metadata. Exiftool can be used to make the XMP >>changes too. > > Can you suggest some "good" xmp editor? > > My current purpose would be for the IPTC data. Exift

Re: [Darktable-users] Editing exif

2015-12-05 Thread Anton Aylward
On 12/05/2015 12:10 PM, Pedro Côrte-Real wrote: >> > >> > Can you suggest some "good" xmp editor? >> > >> > My current purpose would be for the IPTC data. > Exiftool is probably a good one. In the future we should make it much > easier to edit those from inside darktable itself. > > And just to ma

[Darktable-users] correcting slide duplicates

2015-12-05 Thread Dr. Johannes Zellner
Hi, I'm just digitizing some old slides by taking macro photographs from the slides. This works pretty well, except that the contrast if the photos is pretty strong. It seems that I can tweak the base curve for example to improve the situation. Die anyone work with darktable on digitized slide

Re: [Darktable-users] Editing exif

2015-12-05 Thread Bernhard
Pedro Côrte-Real schrieb am 05.12.2015 um 18:10: >> Can you suggest some "good" xmp editor? >> > >> >My current purpose would be for the IPTC data. > Exiftool is probably a good one. In the future we should make it much > easier to edit those from inside darktable itself. does this mean when applyi