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Questions tagged [metadata]

Metadata is additional data related to a photo, this is usually written by the camera into the image file at the time of shooting but can be edited later. This metadata includes information such as the time and date of shooting, equipment involved and settings used.

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1answer
3k views

What metadata is necessary for Facebook to display a 360°×180° photo correctly?

I have a 360×180 panoramic photo, and I'd like it to display on Facebook similarly to this example from Mark Zuckerberg. I tried following Facebook's documentation, but my image is being interpreted ...
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2answers
803 views

How to determine film size from smartphone image exif data?

I took an image from my phone and got its exif data below. It was a samsung note 4, which uses a 35mm film size (24x36) with a 43.27 diagonal. But what I am trying to figure out is the sensor diagonal ...
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2answers
1k views

Rear or Front Facing Camera through EXIF Data?

I have compared the standard EXIF data from a picture taken with a mobile phone's rear camera and another taken with the same phone's front camera. The same fields appear in both files and no big ...
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1answer
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When exactly is “GPSTimeStamp”?

I'm trying to use EXIF data from my photos, and I discovered the wonders of the tag "EXIF GPS GPSTimeStamp" (a timezone-independent timestamp). However, I notice that it's often different from "EXIF ...
3
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0answers
88 views

How to let users make a photo selection online (pick flag rate)? [closed]

I take all my pictures in RAW, I only want to edit the keepers (obviously) and my users want to make a selection themselves, so pick/discard,flag, rate. Is there a way to have them do that online? ...
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2answers
1k views

Why doesn't updating the datetime in EXIF change it in darktable's “image information”?

I use darktable for my digital workflow. The datetime in some of my images is off by a couple of hours. I changed the datetime in all the relevant tags I could find in the *.NEF using exiv2: Exif....
0
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1answer
144 views

Prevent Lightroom from discarding lens model from EXIF

I recently got a Tokina 10-17 mm F mount. Lightroom does not seem to be able to automatically recognize this lens based on NEF files. It does not automatically find the correct lens model for ...
0
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2answers
767 views

Write IPTC “byline” to all images within a folder using Exiftool

I am new to Exiftool and have some experience with Mac Terminal. I am trying to add IPTC 'BY-line' meta to all images within a folder. This is what I have so far: exiftool -iptc:By-line='mybyline' /...
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1answer
1k views

Software to view and add metadata (tags and note) to photos and save it to IPTC

Commercial softwares such as Adobe Bridge and Photo Mechanic allows you to easily browse your images and add metadata to them (eg tags and notes). This metadata will be save in the same JPEG file as ...
5
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1answer
1k views

Convert Picasa stars to EXIF ratings?

Picasa is being phased out by Google. Unfortunately I have a lot of data in Picasa. Most important for me to preserve/export is the photos that have stars. Picasa stores this in a little text file ...
8
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2answers
3k views

How to edit the shutter speed value in metadata?

I found ExifTool, which allows you to edit almost any piece of metadata from the command line. However if you try to edit the shutter speed (using exiftool file.tif -shutterspeed=1/200), it simply ...
5
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3answers
1k views

What is the device with a file name prefix of win?

I have some photos that were sent to me and I was intrigued with the device that was used to take them. However the the EXIF data it's of no help. I know that I have the original JPEG file, with a ...
4
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1answer
404 views

Is there any way in Lightroom to sort photos from multiple days based on time of the day?

I have a folder with holidays photos (7 days). I would like to make a collection witch would sort these photos based on time of the day, without considering the day. For example, all pictures taken ...
6
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2answers
13k views

How to add author and other properties to PNG files?

I am on Windows 7 and I can't find how to add the author or any other properties for a PNG file I created. The only thing I can modify is the shooting time which I don't need. Why is this so? You can ...
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2answers
439 views

Does a Canon 1.4X I teleconverter provide the information needed to show up in Lightroom?

I'm looking at buying a 1.4X Mark I teleconverter (I already have a Tamron one that doesn't register) and was just wondering if anyone knows if the Canon Mark I makes itself known in the metadata
2
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1answer
334 views

Auto White Balance data

I am a wedding photographer and work under a wide range of lighting conditions. I prefer to set my white balance with a Sekonic Kelvin meter and use this value in the Kelvin setting on the camera. I ...
0
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1answer
1k views

How to recover original thumbnail of an edited image?

I would like to know if it is possible to recover the original version of an edited picture. The metadata of the picture in question indicates . "Hasthumbnail : False". So how is it possible to ...
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1answer
432 views

Lightroom - Focus point / length data?

I am building a visualization using Lightroom data (the catalog file) to extract information of my pictures. My Question: In Lightroom, how do i know what my focus length is (that dial which you turn ...
3
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2answers
300 views

Are colour profiles ever stored in RAW files?

Recently on a wildlife photography course, the leader asserted that using aRGB in the camera settings meant less loss of data in the RAW file than if sRGB were used. As I did not understand this I ...
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1answer
73 views

Exif data tool and profile color

I would like to know in a exif data what is the difference between profile CMM type lino and profile CMM type n/a What does it means Profile CMM type?
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2answers
2k views

how can I copy custom exif fields from one image to another with exiftool?

I am trying to copy all metadata from one image to another, including custom exif fields (in this case absolute and relative altitudes present in images from my DJI drone) using the command: exiftool ...
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2answers
439 views

How do I get Exiv2 to apply metadata from a static XML file to several images?

Exiv2 seems to work quite well with batch operations by keeping any generated derivative files the same root filename with an different extension. My mission is to draw the meta information from a ...
2
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1answer
479 views

Why don't the Shutter Speed, Exposure Time, Lens Aperture, and F-Number metadata values from my camera make sense?

I was just looking at some digital image properties, and it did not seem to make sense. Shutter Speed: 1/16 sec. Exposure Time: 1/11 sec. Lens Aperture: F/1 F-Number: 2.8 I would have thought that ...
6
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4answers
1k views

How is actual focal length greater than focal range of lens?

This image (not shot by me) is shot using 70-300mm f/4.5-5.6 lens, but the EXIF shows the focal length to be 302 mm. How is it possible to be shot at a focal length (302 mm) greater than the ...
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2answers
187 views

Is there a Lightroom feature for ranking images collaboratively?

Say a photographer takes a bunch of photos and needs his teammates, who are geographically separated, to rank them so that the best of the best photos can be selected for post production. If it were ...
8
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6answers
11k views

What photo editing software will keep tags (incl. face/people tags) with the file (EXIF/XMP)?

I am evaluating Photoshop Elements and Lightroom for my photos. I store my photos in the cloud (currently OneDrive) and on a website (currently SmugMug). At the end of every year I like to go ...
1
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1answer
402 views

Searching IPTC fields in images over the web

If I embed IPTC data into images that I provide to clients (or anyone else) and assuming they don't remove that data, is it possible to search for the data in that image over the web using google or ...
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2answers
120 views

is there a way to see how I edited an image that has already been changed to a jpeg?

I have an image that I can't remember how I edited and I no longer have the lightroom catalog. I thought there was a way to view the editing steps from the metadata, does anyone know how to do that?
5
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2answers
352 views

In Lightroom, where are the equivalents of the “Comments” and “Subject” tags from Windows File Explorer?

I wrote some info on a couple JPEGs using Windows File Explorer. In Explorer, I wrote info on the "Comments" and the "Subject" tags. However, when I import the JPEGs into Adobe Lightroom, I can't find ...
8
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5answers
931 views

How do I update Lightroom metadata after using ExifTool without wiping my edits?

I had to change the date/time of my photos to + 3.5 hours with ExifTool because Lightroom didn't allow me to input half an hour… I was using "exiftool -AllDates+=3.5" which is working nicely but ...
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2answers
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When is each of these EXIF date & time variables created, and in what circumstances do they change?

Analyzing various EXIF data, one noticed there are several date and time data inside. [File] from what I understand is system data, just displayed there for convenience, not really part of EXIF data (...
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1answer
518 views

What caused the EXIF data to be changed in these files I expect to be identical?

I have two folders full of images, folders 1a and 1b, that I took, and in the process of sorting them for backing up, I noticed they are not the same. The dates in Windows Explorer are all wrong, and ...
2
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2answers
101 views

Setting up Lightroom

I am about to launch my photographic collection into Lightroom but it is something I want to do correctly,and only once. I have a collection of several thousand images, presently foldered in Windows, ...
3
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1answer
467 views

How can I record the zenith angle of camera within the metadata of a photo from smartphone (iphone)

I'm taking a series of hemispherical (fisheye) photos while I ride my bike down city streets as a part of a project to explore the structure of city street trees. I'm planning on using my smartphone (...
5
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1answer
1k views

Does writing EXIF tags influence jpeg quality?

If I understand well then the EXIF data is written in an extra space of the JPEG file. When I add or modify an EXIF tag does this leave the picture untouched? I searched for this and I was not able to ...
3
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3answers
47k views

Any tool that would retrieve the ORIGINAL date a photo was created on even after it has been processed?

As mentioned in the title, sometimes the desktop or mobile application used to process/edit a photo, especially if it has been moved, copied, re-saved, etc.. would cause the very original date of the ...
2
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0answers
84 views

Does anybody know software that limits amount of keywords?

Does anybody know software that limits the amount of keywords in each photo, e.g. by discarding all keywords above keyword no. 50, for example? (Of course using the given sorting of keywords) If ...
2
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2answers
368 views

Can I calculate my phone's sensor size from f-stop, focal length, max aperture, or other metadata? [duplicate]

Could I work out sensor size of my phone from these info: F-stop= f/2.6 , focal length = 3mm, max aperture = 2.8 and others info like: resolution unit, exposure time?
0
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1answer
927 views

How do I import metadata from a filename?

I'm looking for a tool (freeware if possible) that can write the metadata of a picture by parsing its filename. Example: Filename: mySuperCoolPhoto_20150825.jpg Extracted Metadata: EXIF:...
2
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1answer
121 views

How do I autofill the copyright metadata for the current Lightroom catalog?

When I was using Lightroom, I accidentally overwrote the copyright metadata to 2009. Is there any script or technique inside LR4 (or with some free software) so I can calculate and rewrite the ...
1
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1answer
3k views

How to use exiftool to write date tags according to file path?

I need to set the exif date tag of a bunch of photos stored with the following hierarchy: YEAR/MONTH/DAY/IMG_something.JPG How could I do it easily with exiftool?
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1answer
1k views

How can I automatically create an image “key” with group photo silhouettes tagged with people's names?

From a group photo, I would like to create an image that identify each person with their names. My first idea was to create a silhouette image from the original one, put a number over each face, and ...
2
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2answers
118 views

Photo hosting solution with very specific requirements [closed]

I'm working on an archiving project in which I'm scanning hundreds of old family photos, retouching them, adding metadata, and eventually hosting them for other family members to browse. I've checked ...
2
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1answer
1k views

How can I convert a panorama to “Google Sphere” / Panorama for “Google Views”?

I have this panorama: https://www.dropbox.com/s/1e0qz92jsb4xibe/test-3000x1500.jpg?dl=0 I edited it in Photoshop and uploaded it to Google, but it isn't recognized as a panorama any more. That's why ...
0
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1answer
292 views

how to calculate “FocalLenIn35mmFilm” with limited metadata

Im creating an app that uses "FocalLenIn35mmFilm" to calculate feild of view(FOV). unfortunately not all photographs contain this property in their meta data, the Motorola Nexus 6 is an example. The ...
13
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3answers
308 views

Do web-based photofinder services for stolen cameras work?

Unfortunately I've been robbed this week, and the thief stole my Nikon DSLR + Optics. I am considering registering in Stolen camera finder or CameraTrace, which browse the metadata of web pictures. ...
0
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1answer
2k views

How can I remove all keywords from Adobe Bridge?

I have started using bridge and in doing so reorganized my keyword list a number of times, without being aware that if all the files with that keyword aren't selected, you end up with duplicate ...
2
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1answer
2k views

Is there a tool to compare image EXIF data across folders, so I can eliminate duplicates?

Is there a tool that can take two folders of images files and give comparison (duplicates info) based on images' EXIF data, instead of comparing file size or file dates (which tend to be unreliable ...
0
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1answer
115 views

Why does Photoshop say the f-stop is f1.6 in the summary but 1.4 in the details at the bottom?

Here is the picture; photo shot in RAW. Why is it that at the bottom it says f1.4, but the summary on top says f1.6? Plus, I am pretty sure flash fired too but again it is saying flash did not fire.
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2answers
2k views

Software to cross-check EXIF date taken vs date in filename?

I have a library of about 25,000 photos (JPGs). I have been maintaining the library so that the date taken in the EXIF data reflects the actual capture date, but I keep finding exceptions where I've ...