Lightroom: Ability to edit certain EXIF data fields

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At a mimum, I would like to be able to edit:

(1) Lens (not all lenses are recorded properly by camera).
(2) Camera (for scanned film).
(3) Date and time (for scanned film and for when camera messes up).
(4) Focal Length.

Let this be also free promotion for John Beardsworth, who has a plugin that does some of this stuff. I think it's time it was expanded and made a part of the program.
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Photographe

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Posted 8 years ago

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Rob Cole

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Do you want to write the edited data back out to the source file, or just have it be changed in Lightroom (via metadata in the catalog)?
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Photographe

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If it's in Lightroom, would there be any issue writing it to xmp? I guess you're going to tell me yes, so yes, I would want to write it to xmp (whether it be inside the file or sidecar).
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Rob Cole

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Well, the question was "do you want to correct it in the source file, at its origin". If its corrected in the Lightroom catalog, it will get written to xmp, but that's different. Presently, capture date/time is the only item Lightroom will change in the original source file at the origin, and that only if explicitly permitted via a preference which defaults to "not permitted". It sounds like you dont care if its written back out to the original source file at its origin, as long as Lightroom is using the correct values for lens, camera, date/time, and focal-length, no?
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Photographe

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There is a major problem with the way LR handles changes to the Date/Time. If you select a bunch of pictures and set a date and time, they will all have different dates and times. They all get changed in relation to the most selected picture or something.

I don't understand your point though. If the metadata gets changed in xmp and you're dealing with DNG, JPG and TIFF, doesn't that mean it's being changed at the original file, since xmp is contained within the file?

I have no interest changing RAW files, and in that case xmp changes can be written in sidecar.
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Rob Cole

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"I have no interest changing RAW files... " - that was what I was trying to ascertain.

So forgetting about xmp for the moment, you want it corrected in the Lightroom catalog, as opposed to correcting the original source.

The difference being: Lightroom does not like to mess with the original raw - not sure why there was an exception made in the case of date/time. If a plugin were to mess with the original raw it'd probably be by way of ExifTool, which has no quams about it. If plugin changes Lightroom catalog, it'll be by way of SDK API.

So, now that we've got that straightened out. It might actually work to use exiftool before importing into Lightroom - and actually change the origin in raw for Lightroom's sake. RC Importer has ExifTool wired in, that's one possibility, but if you prefer your imports through Lightroom's import dialog box, then consider dropping your files onto a corrective batch file or something like that before importing - PM me for help setting that up if you want. If you want the catalog patched by way of a plugin, I may get to that at some point - not sure when. You could do it too if you have a little technical aptitude and the SDK...

All of this *not* intended to replace native support, but to satisfy until then, if its worth the trouble. Is it?
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martijn Saly

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This reply was created from a merged topic originally titled LIGHTROOM - Editable lens metadata.

Useful for manual/analogue lenses on digital cameras. It's not useful to have ALL lens information absent, when you've got the information to fill it out.

Yes, this can be done with external tools like Exiftool, but it wouldn't be too much work, I imagine, to remove the `readonly` mark from those fields to make them editable.

I mean fields like lens brand/type, aperture, focal length, focus distance, that sort of thing.
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MyGetSatisfactionAccount

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This reply was created from a merged topic originally titled Lightroom: Edit Exif and fix magenta shift when importing from manual lenses.

With new cameras like the Sony NEX-7 it is possible, and indeed extremely attractive, to attach manual lenses to the camera, such as high-quality Zeiss and Leica lenses. In fact, people are attaching all sorts of exotic and interesting old and manual lenses to these cameras. The problem is that when one does this the camera has no way of recording the lens model, the focal length, the aperture setting etc, etc into the EXIF. Secondly, usage of these old lenses can create a magenta colour shift that has to be corrected using something like CornerFix. Adobe has the Lens Profile Creator but it does not have a way that customers can easily create magenta colour shift profiles, as you can with CornerFix. I believe that this will become more of an issue once cameras like the NEX-7 become more popular and people mix the old world and the new world. Therefore, can I request a change/update to Lightroom to enable:

1. The setting of the Lens Model, Focal Length, Focal Length in 23mm Format, F Number/Aperture Value details at the time of import so that this information can be added to the EXIF at the time the photo is import.
2. The ability to easily create simple magenta colour shift profiles.
3. The ability to apply these colour shift profiles to photos at the time of import.

This could make the use of "exotic" lenses much easier in Lightroom than is currently the case - it would certainly mean one does not have to use things like ExifEdit and CornerFix when importing images into Lightroom. Thanks :-)
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David Lilja

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This reply was created from a merged topic originally titled BRIDGE / LIGHTROOM - Edit EXIF lens information during import.

I'm shooting with a manual Nikkor lens via an adapter on my Canon. I would love to be able to edit the EXIF lens information while importing; either via Adobe Bridge, Photo Downloader or Lightroom.

Cheers
David
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martijn Saly

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The amount of merges kind of signals the the demand for this "feature". Or rather, the removal of the feature that arbitrarily makes certain fields readonly.