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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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Aerial Picture Ground Footprint Calculation

I've been working on an application that, given an aerial picture taken by a drone and the coordinates of an object of interest, tries to determine whether the object is located within the ground ...
Samuele B.'s user avatar
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41 views

Is EXIF timestamp affected by write buffering?

In general, if you capture an image at time X, but the camera is write buffering after a long continuous shot burst, when the image is written to card at time ...
stephent's user avatar
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2 answers
117 views

Can image metadata taken with a camera phone be trusted?

I’m wondering how accurate the metadata is on iPhone 12 photos taken. I understand time, date, and location info is easily modified. My question relates to the phone/camera description of the device ...
Asil Klab's user avatar
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1 answer
62 views

How to enter multiline caption in Lightroom metadata preset?

I want to insert a predefined image description (called "Description" in Adobe Bridge CS5 and "caption" in Adobe Lightroom). I defined a metadata preset with the relevant tags and ...
Triceratops's user avatar
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3 answers
150 views

XMP sidecar file editor

I'm looking for recommendations for an XMP sidecar file editor. That is, something that will let me edit standalone .xmp sidecar files, not XMP data embedded within an image. Ideally Windows and ...
Andy Johnson's user avatar
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0 answers
44 views

How do I add multiple tags or keywords in Lightroom using a preset?

I want to add a set of keywords for certain types of photos - typically for a certain flower I want to add as keywords its scientific name, its vernacular name, and the tagד "flower" and &...
Triceratops's user avatar
0 votes
1 answer
52 views

How do i use the exif tool to create folders on the camera model name?

Here's the deal, i'm an absolute beginner and i'd to do this. I'd asked chatgpt and it came up with this code. Somehow, it's not working. I'd check everything and it should be. I also want to make ...
yoloxolo's user avatar
1 vote
1 answer
37 views

Adding same description to many files in Lightroom

How do I add the same caption/description to multiple files using Lightroom? I tried to select all the photos and edit the caption in the Metadata panel but it only applies the changes on a single ...
Triceratops's user avatar
0 votes
1 answer
28 views

Attributing as B&W in IPTC using Bridge

As an amateur I organise my photos in Bridge which does everything I require apart from one thing, I cannot find a means of attributing the color mode. It is visible but not editable under the file ...
Dight's user avatar
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1 vote
3 answers
350 views

A JPEG image EXIF Orientation problem

I have an image which it is strange, The EXIF Orientation tag is 8 (left bottom, i.e. rotate 270 CW) Image source: https://drive.google.com/file/d/1WQOuy4wZpofvSLu3p6TmiOQI-udN7ooS/view?usp=sharing I ...
saycchai's user avatar
5 votes
2 answers
202 views

Edit an image's data so that a digital camera can read it

Context I have a Polaroid PoGo Zink printer (link to manual) that I would like to print an image on. Unfortunately I cannot get the Bluetooth to connect succesfully to any of my devices, so I am ...
MicroMachine's user avatar
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74 views

DigiKam: Transfer XMP Data from grouped JPEG to RAW

i have a large image collection in DigiKam that consists of grouped JPEG and RAW images. JPEG images are the thing displayed by the group by default. I'm pretty sure that I configured digikam in a way ...
paschwuerfler's user avatar
1 vote
1 answer
71 views

How to find 360° images within a folder shared with many other images?

In the past years I've taken many 360° pictures. I used the Google photo sphere function in the camera app of my Android Pixel phone to do this. These images are now on my computer, mixed up with ...
Sandra's user avatar
  • 113
0 votes
1 answer
66 views

I have 1000+ photos with intact metadata. I want to list the dates taken

I have 1000+ photos with intact metadata. I want to list the dates taken in tabular form with the photo image included. How can I do this?
Robert Jarvis's user avatar
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0 answers
71 views

Samsung "Scene Optimizer" and EXIF data

Considering this earlier question Is it generally accepted that "Samsung 'space zoom' moon shots are fake" and that some cellphones (e.g. S20 Ultra) use AI to add features? Leaving ...
Mark Morgan Lloyd's user avatar
0 votes
2 answers
118 views

Lightroom Classic synchronize folder fails to import metadata

I have Lightroom Classic 12.4 on my laptop and desktop, and store all my photos on my Synology NAS. I edit my photos locally on my laptop using Lightroom Classic, then (when I'm home) I use Lightroom ...
thatguy's user avatar
0 votes
2 answers
663 views

How can I determine if this image has been altered in any way?

I need help trying to see if this photo has been messed with in any kind of way. ...
court b's user avatar
0 votes
2 answers
92 views

Obtaining original creation data of photo

I need to obtain the original creation date of a photo taken on a phone. This phone does not store any EXIF metadata. How can I get the date when the photo was originally created ?
operauser's user avatar
2 votes
2 answers
2k views

What might be the reason I cannot see the date a photo was taken in its metadata?

I was sent a .jpeg photo by gmail. It looks like it is pasted into the mail, but it also shows up as an attached file on the mail preview. Opening the mail however, the photo is in-line with the text. ...
Investicroc's user avatar
0 votes
0 answers
181 views

Breaking down the format of the "Y Cb Cr Sub Sampling" EXIF tag

When using exiftool to inspect various images, I've seen lots of different values for the Y Cb Cr Sub Sampling tag. A few ...
2rs2ts's user avatar
  • 101
0 votes
1 answer
150 views

Image metadata contains Focal length and calibrated focal length but the values are different

I have a DJI drone image. When I use gdalinfo -mdd all myphoto.jpg at the command line I can read the EXIF and XMP tags for the image. I see there are two values ...
GBG's user avatar
  • 155
1 vote
0 answers
93 views

Managing time zone data in jpg files for use in Google Photos

I wish to create a Google Photos album which displays my images in the order that I dictate. My problem would not exist if Google Photos would offer the option of sorting images in an album by ...
CB24's user avatar
  • 11
1 vote
1 answer
135 views

How can I use ExifTool to prepend text to image files' descriptions?

I need to prepend text to the description fields of a bunch of jpgs. I found discussions of appending text (e.g., here and here), but not of prepending text. My destination tag is ...
KnowItAllWannabe's user avatar
0 votes
1 answer
134 views

How do I use EXIF tags to determine the length of an object in focus? [duplicate]

I have an image with EXIF information encoded into it. What I need to know is what information I can use to determine the length of a certain object. For example, are there tags that hold the camera ...
vs07's user avatar
  • 101
0 votes
2 answers
587 views

Which JPG has better quality? And which Exif Byte Order is better?

I have two folders of "the same" JPG images that I made over 10 years ago, when I was a kid, but the size of photos in one folder is different than the other. The photos were made on my old ...
user14119170's user avatar
4 votes
2 answers
273 views

How to print GPS coordinates on face of photo with caption/comment?

Is there an app/program that can display the following information on my photos (both when I display them on my Windows 10 PC and when I print them): The date the picture was taken The GPS ...
Tom's user avatar
  • 41
2 votes
2 answers
890 views

How can I find detailed Sony Exif codes in a format that I can use

Summary Where can I find Exif codes of the type shown below that cover all features of my cameras? (I have mainly Sony cameras but a more general resource would be welcome). I have too many Sony ...
Russell McMahon's user avatar
2 votes
1 answer
88 views

Relationship between quad bayer sensor and the CMOS size

I have developed Python code to take an image produced by a DJI drone (and several other GNSS Cameras) and georeference the images. Basically the code reads the EXIF data from the individual images. ...
GBG's user avatar
  • 155
0 votes
2 answers
50 views

propritery SANYO metadata

How does an old SANYO camera store proprietary metadata on JPG that are not part of the Exif section? Like if the photo has the correct date or if it was taken using the hand or smile detection or ...
Eridion Kiorai's user avatar
0 votes
0 answers
101 views

Set Date Created from filenames

I have around 4k photos and 1k videos that have no date in metadata because I switched my phones. All of them have the dates in the filenames in the format - ...
Duonic's user avatar
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1 vote
1 answer
146 views

Wrong EXIF data when uploading directly from camera

Given a webform where I can upload a photo I have two different outcomes. 1 When uploading a picture that was taken earlier, the EXIF data of the uploaded picture contains orientation "top left&...
Rene's user avatar
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2 votes
1 answer
751 views

IPTC vs XMP: how do they differ

I am quite confused by what IPTC and XMP are used for. I understand that EXIF is for technical information about the image, while IPTC is for actual metadata (with respect to the image, not the file), ...
texnic's user avatar
  • 282
0 votes
1 answer
88 views

Lightroom Classic v12.1 error: A change in Develope remove all Fujifilm metadata

Lightroom Classic v12.1 error: Any change in Develope removed all Fujifilm metadata (Exif tags) when saved. When comparing a jpg file from my X-H2s camera by ExifTool, the following where missing ...
Olaf's user avatar
  • 1
1 vote
2 answers
454 views

How can put 2 jpg images side by side in a new jpg without losing metadata or image quality?

I have lots of photos with writing on the back. I've scanned the fronts and backs into jpgs, and now I want to create a single jpg for each front/back pair. The front and back images should go side by ...
KnowItAllWannabe's user avatar
1 vote
2 answers
126 views

Why does Jhead with the -autorot option fail to fix my photos' orientation?

I have a lot of photos taken with an iPhone SE that are not displayed in the correct orientation when I view them using the Windows Photos app, XnView MP, or FastStone Image Viewer. I never modified ...
pacoverflow's user avatar
0 votes
0 answers
26 views

Are there software tools to help analyze EXIF metadata to help guide new lens choices? [duplicate]

I have a zoom lens (18-135mm on an APS-C body) and I am starting to look at options to upgrade to a different lens. I bought my camera and lens together and while I used a different lens (70-350mm) ...
Vince's user avatar
  • 113
1 vote
1 answer
454 views

Is there an exif tag for face areas?

There is a SubjectArea tag in EXIF. Is there something equivalent for Faces? https://www.cipa.jp/std/documents/e/DC-008-2012_E.pdf https://www.cipa.jp/std/documents/e/DC-X008-Translation-2019-E.pdf ...
BuZZ-dEE's user avatar
  • 111
0 votes
0 answers
868 views

How can I change the "time taken" metadata for iPhone HEIC files?

I have some recent iPhone photos with timestamps in the wrong timezone. In Windows PowerShell, ...
KnowItAllWannabe's user avatar
2 votes
4 answers
705 views

Can I assume the DateTimeOriginal of an image without an OffsetTimeOriginal is already in UTC?

I'm working on an application which will extract some EXIF information from images including when the image was taken. I see that some images provide a DateTimeOriginal but not an OffsetTimeOriginal. ...
Logan Shire's user avatar
1 vote
2 answers
242 views

Time zone camera clock was set for does not match GPS timezone

I have a bunch of photos I took with my DSLR. It does not have GPS, so I geo-tagged all the photos using GPS positions I captured on my phone. This part works fine. However, when I upload them to ...
Michael's user avatar
  • 791
2 votes
3 answers
343 views

Programatic way of aggregating focal length metadata across large collection of photos

I am looking to analyze my library of photos to see what focal lengths I use most often, to better inform lens purchasing decisions. The recommendations I have been able to find online so far usually ...
Kenny Sexton's user avatar
1 vote
3 answers
2k views

Suspect photograph timestamp data has been altered

I received photographs over email from a client which I suspect were taken in 2022 but the client insists are from 2021. I looked at the metadata, filenames, and date modified timestamps to look for ...
EllipticalInitial's user avatar
3 votes
0 answers
160 views

How do these modern multi-lens/multi-sensor smartphones work?

My last smartphone just had one front lens, so I could understand. My current phone has three front lenses (and three sensors, too, I guess), so I was a bit surprised, that I had zero control over the ...
U. Windl's user avatar
  • 443
0 votes
1 answer
76 views

How to update XMP metadata in paired JPGs in Lightroom?

Background: In my catalog, many photos that were imported as RAW+JPG. Note that I obscure JPGs in Library View (the default) to simplify my workflow. In order to export my Lightroom keywords, I have ...
mkk's user avatar
  • 113
0 votes
2 answers
171 views

Incorrect exif orientation on Canon 80D/60D when upside down/180 degrees?

The EXIF orientation tag can hold 8 values for the orientation of the camera. One of the tag values 3, indicating that the camera was turned 180 degrees, i.e. held ...
Postie's user avatar
  • 101
0 votes
2 answers
207 views

What's the best software for reading and writing image tags to and from image meta data fields?

I have millions of images that have had image tags assigned to them by various cv-api's my plan is to generate a data file, that will associate the image file names with the data captured so that I ...
Barclay Hound's user avatar
3 votes
2 answers
943 views

Migrating away from Picasa - "Write faces to XMP" changes the hashes of images

I want to migrate from Picasa (to digiKam) and to export the face tags. I tried the experimental feature of writing faces to XMP, and noticed it changes the SHA256 hashes of the files, which I want to ...
Sepp A's user avatar
  • 31
0 votes
1 answer
103 views

What is the term write time referring to?

Date time taken, and date time digitized are the same. Write time is one hour prior. What does that mean? Photo was analyzed on opanda.
Lisa's user avatar
  • 21
0 votes
2 answers
168 views

Is there any photography website where I could find photos based on exposure time, focal length, ISO...?

I was wondering if there is a site where I could filter photos that were shot, for example, with a certain exposure time and few other conditions. Is there any photography website where I could filter ...
Alfonso_MA's user avatar
8 votes
1 answer
4k views

Where are Samsung's "Gallery" app's automatic "tags" stored and how can they be used downstream (i.e. in non-Android photo mgmt / dam software)?

Samsung's "Gallery" does a fantastic job at automatically / on its own assigning "tags" to photos, making it easy to find photos with certain keywords (e.g. "sunset" or &...
nutty about natty's user avatar

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