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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5answers
81 views

How does PPI relate to DPI in photo metadata?

I have been asked to provide pictures in JPEG format at a resolution of 300DPI. My computer give me a picture sizes in kilobytes and Photoscape the photo editing package that I use, converts ...
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2answers
25 views

Add Geotags to photos from GPX track

What's the best way to add geotags to photos if I have a GPX file with my location track? I don't have lightroom and I'm on a Mac.
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2answers
2k views

How to extract depth information from JPEG files?

Some mobile phones support changing the depth of field using depth information calculated from dual cameras. If the depth information is stored in the jpg file, how can it be extracted?
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4answers
15k views

How can you write/convert Picasa's People tags to the EXIF data?

I use Lightroom for my workflow, and I tag photos with people's names so that I can find them faster. Since Lightroom doesn't have the "Faces" feature, I want to use Picasa's People feature for this ...
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1answer
64 views

Why does device listed in metadata change on photo transfer?

What are the reasons that a photo would have the wrong 'Device used' and 'software in use' metadata on a photo. The photo that was checked was not the provenance picture and so it is a copy of the ...
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6answers
15k views

Ways to edit metadata of a PNG file?

How can I edit metadata of a PNG file? Is there some free software I can use?
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4answers
340 views

Is there a digital camera that is able to save people bounding boxes?

I am looking for digital cameras that are able to recognize faces(automatically or by user input) and save those as tags in XMP using either Microsoft Photo 1.2 Schema or Metadata Working Group - ...
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3answers
701 views

iPad photo editing app that exports edits as XMP to reuse in lightroom?

Basically, I'm looking for Lightroom for iPad :) but until then, I'm trying to find an alternative. To organize and tag pictures I'll be using Photosmith which integrates with Lightroom. Now, I ...
109
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18answers
8k views

How can I better organise and file my photos?

At present I meticulously add metadata as EXIF tags to my photos using Microsoft Pro Photo Tools, which also lets me place them accurately on a map. The thing is I tend to leave photos in a folder ...
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1answer
91 views

Why doesn't Lightroom load files after I've changed their camera model metadata using EXIFTOOL?

I shoot with Fuji (.RAF). I am currently having issues in changing camera model on Mac. I tried using the command line exiftool -Model="..." <filename>.raf It says the file was updated, but ...
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6answers
5k views

Fix photo timestamps?

I took a bunch of pictures, and when I loaded them onto my PC, I discovered the time on my camera was set incorrectly. Now this normally wouldn't be a problem...but I am combining pictures from ...
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2answers
71 views

Is there way to visualize Photoshop changes by EXIF?

Photoshop saves the changes made on the photo to its EXIF (or XMP). Is there any chance of visualizing this data? Example photo and its EXIF data can be found on my webpage: example
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4answers
2k views

How to get lens serial number from Exif?

I want to write down model name and serial number of my camera body and camera lens, in case they are lost or stolen. Where can I find those data? Lightroom provides all data but serial name of lens. ...
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0answers
97 views

Calculating EV of an image file using its exif data

I'm trying to calculate the EV (exposure value) for an image file based on its exif data. In Wikidepia, I came across this formula for calculating EV: EV = EV100 + LOG(S/100, 2) = LOG(N^2 / t, 2) +...
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2answers
622 views

How do XMP files encode aperture?

When I open a Lightroom XMP file, I read this odd line (the photo has been taken at f/8.0, all tools agree with that) exif:ApertureValue="6/1" Apparently, 6/1 means f/8.0, but where is this ...
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2answers
88 views

Shutter Speed from the Exif ShutterSpeedValue

Extracting Exif data from my photo (using python) among the other values I have: 'ShutterSpeedValue': (8643856, 1000000), 'ApertureValue': (1695994, 1000000) After some research, I found that the ...
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10answers
79k views

Is there a free program to (batch) change photo file's date to match EXIF?

I want to specify a directory and have the software find all the photos in the directory and its sub-directories, and if they contain EXIF date/time, it sets their filesystem timestamp to match the ...
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1answer
39 views

Can Tamron Tap-in Console solve focal length problems in metadata?

I recently found some issues on my Tamron 24-70mm f2.8 G2 (A032) lens for Canon. The first issue is about the focal length in the EXIF data. While the lens works well in autofocusing, I found the ...
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2answers
8k views

Identify date from code on back of printed photo

I am digitizing all of my old family photos and was curious if anyone knew how to interpret this code and figure out the date the photo was taken or printed. Either would be fine: Sample Code #1: ...
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1answer
38 views

Exif tag for png files that will be recognized by google photos as date taken

I am trying to upload several png files (screenshots) to google photos. As PNG does not have DateTimeOriginal tag, I have used CreationTime tag to store the date taken information copied from the date ...
0
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1answer
67 views

Can anyone tell me which cameras populate sub-second EXIF information?

I see the EXIF standard has a SubsecTimeOriginal field, but the sample photos I've tried looking at don't seem to have populated the field. Or maybe the tooling I'm using (GIMP, exiftool, PHP's ...
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2answers
274 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 ...
42
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11answers
55k views

How to shift EXIF date/time created by time in days, hours, minutes?

I have two camera bodies, I was shooting while on vacation, when I downloaded the photos to lightroom, one body was set to the correct date/time, the other was off by 722 days, 4 hours, 32 minutes. ...
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1answer
3k views

How can the aperture value written in Exif be larger than the nominal limit of the lens?

A photo shot with an 1:1.8 lens contains the following exif data: ApertureValue: 1695994/1000000 MaxApertureValue: 16/10 How is this possible? Both values are <1.8.
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2answers
427 views

How do I find raw files corresponding to selected JPEGS

I shoot RAW + JPEG on fujifilm cameras and 90% of the time I'm fully content with my jpeg images but a few could use some editing. To save time I would like to cull my photos into three categories: ...
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1answer
50 views

Metadata problem

I have a photograph which displays time taken and camera model etc. But looking further at the properties and under "file", there is no date created or modified date. But there is a date of when it ...
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5answers
8k views

How can I add/edit geotag data for one particular photo?

How can I geotag one particular photo? Or edit a photo with incorrect geo data? I'm using GPSLogger in my android phone to record GPS data and later sync them to my photos using GPicSync. But I ...
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1answer
260 views

Is GIMP allow to add or change geo-tag localization in Exif data? Is there any plugin for that?

do you know is it possible to change or add geo-tag localization in Exif data of .JPG photos? Is there any plugin for that? I cannot find any clear answer is it possible from the graphical application ...
3
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1answer
92 views

How to retrieve tags from “Amazon Photos”?

I recently subscribed to Amazon Prime, which allows me to use Amazon Drive / Amazon Photos. With it, I can upload and store all my images, RAW files included. I was surprised to see that Amazon ...
2
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1answer
206 views

What EXIF fields are commonly populated and don't vary shot-to-shot on photos from the same camera?

For programmatic reasons I'd like to be able to group photos taken by a photographer using multiple cameras on a given day by the camera. I'm thinking make, model, & software. Though it's very ...
2
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1answer
77 views

exiftool - rename using model only - not maker

I want to rename my files to include the camera model, but the full tag includes the make as well. exiftool.exe -d %Y-%m-%d_%H%M%%-c.%%e "-filename<${model;}_$CreateDate" -r DIRECTORY Creates: ...
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2answers
68 views

How to sort photos by time, while ignoring date?

I'm an ecologist working with trail camera data. I have about 1 million images taken over a period of several months from multiple cameras that I need to sort through for pictures of animals, but ...
2
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0answers
197 views

Is there a way to batch-edit metadata in the Mac OS Photos app?

I've starting using the Photos app built into Mac OS (El Capitan). I appreciate the great integration with iOS/iPhone and iCloud. However, I'm not seeing any features that will let me make significant ...
4
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2answers
334 views

Why does the “As Shot White XY” metadata tag change even when WB is set manually?

I am capturing raw images using N900 camera. It gives me DNG files. I have some question regarding the colour temperature of these raw images. Objective: I am trying to map the CIE-XY Camera white ...
6
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2answers
12k 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 ...
5
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3answers
4k views
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 ...
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3answers
740 views

Picture Metadata and Face Tags: What Software to Write them and Read them

These past 3 days were a nightmare to me as I was trying to find THE way to store picture metadata for my 5000 photo archive the correct way. Since I read this great blog post of Carl Seibert I found ...
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1answer
96 views

How can I manually set EV in Lightroom to take a neutral density filter into account when merging photos?

I shoot a couple of Images and try to merge them with Lightroom. Since a few (but not all) of the shoots were taken with an ND-Filter. I need to somehow tweak the EV value of the Photos I took with ...
3
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3answers
500 views

What is “focus distance lower/upper” and how is it different from depth of field?

I have taken two photographs on a Canon crop sensor camera: 18mm f/9 with the following exiftool output (the focus was approximately at 3.5 meters): Focus Distance Upper : 5.27 m Focus ...
0
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2answers
60 views

Proper formatting of Subject Tag in XMP

My intention is to assign tags to each image based on the content in the image.For example This image can be be assigned tags Tulips,Flower etc So can i assign subject like tulips,flower and so on ...
0
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3answers
105 views

Where to store scene label information about a photo (e.g., “nature”, “cat”, etc.)?

I want to tag some images. I'm wondering which is the right place in the EXIF to store specific information about the scene. For example: Cat, Nature, etc.
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9answers
17k views

What software can show my most frequently used focal length?

Many people recommend a focal length of 35mm, 50mm, and sometimes even 85mm and upwards for those interested in purchasing a prime lens. I, however, would like to figure out what focal length(s) I use ...
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1answer
131 views

What metadata does RAW support that TIFF doesn't?

RAW and JPEG both support recording of a lot about the shooting,ranging from the İSO to what lens was used at what coordinates. When I convert CR2 RAW to 16 bit lossless TIFF, what will I lose? (I ...
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1answer
111 views

Can I find anything out from numbers on the back of old photos?

I have some photos of my grandfather's during WWII and the occupation in Japan (1942-1949???). They are from all different places in Japan and were taken at different times. I wanted to know if there ...
2
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1answer
80 views

Can the date a jpeg was created be wrong — too early?

I have a set of jpeg photos that, according to the person who gave them to me, were taken in November 2016, of damages to a car that occurred in August 2016. The "created" date in the exif data is in ...
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1answer
59 views

How to get focal length data from proprietary file formats (CR2, ARW, etc)? [closed]

I'm looking for a way to read the equivalent of EXIF data (focal length, camera make, etc) from RAW file formats, preferably with javascript. I've managed to read EXIF from JPG's, but there don't ...
0
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1answer
88 views

Filename to Created date

All my photos - jpegs - have the naming convention YYYY-mm-dd-nnn (1971-12-00-001) and I've recently uploaded them to Google Photos. On my PC I can sort them into date order but Google Photos uses ...
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1answer
1k views

How to copy DateTaken tag from another image using ExifTool?

I want to copy EXIF Date Created Tag from one image to another.I understand that i can copy all details using exiftool -TagsFromFile a.jpg b.jpg This copies all tags from a.jpg to file b if its ...
30
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4answers
6k views

What tagging system do you use?

What tagging system do you use for your photo collection? I ask because tagging is the only way I can make sense of my large photo collection and I am trying to improve the effectiveness of my photo ...