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What Your Photos Know About You (itworld.com)
itwbennett writes: Sandra Henry-Stocker became curious about how much more complex the jpg format had become since she first did a deep dive into it more than twenty years ago, so she dug into how much information is stored and where. "This information is quite extensive — depending on the digital camera you're using," says Henry-Stocker, "containing detailed information about the photo such as the make and model of the digital camera that was used, whether a flash was used, the focal length, light value, and the shutter speed that was used when it was taken. And, if your phone/camera has geotagging turned on, it will also include the altitude, longitude and latitude of the place where the photo was taken." Henry-Stocker used exiftool to extract and label the data so you can see what is collected, and how you can protect your privacy as well as your intellectual property.
Thanks, we know.
How is this News for Nerds? It is common knowledge.
I've been uploading photos to Wikimedia Commons for a decade, and they list all this metadata right there. Did anyone not already know about this?
iOS preferred.
If you have a link, please. Diving into the App Store is a vast time-consuming exercise.
It appears that itwbennett was, in fact, born yesterday.
Solving Unix problems since 1989...
"had become since I she first" - ???
For every problem, there is at least one solution that is simple, neat, and wrong.
Which is kinda great. Phones and cameras let you turn off the location tagging, but considering the lengths that people went to for location tagging when it was not a built-in function, why would you? You're not a terrist, are you?
Nevertheless, if you want all of that info removed, you can use jhead -purejpg *.jpg
That means I can actually use some sort of extra data, let's call it "meta" data from now on, to manage my photos! Imagine if in the future they could store extensive details like even the temperature of the sensor! I know I am making things up now, but perhaps it would be convenient for example on some sort of futuristic long exposure technique where you would need dark calibration frames.
Can't wait for tomorrows news for nerds, where Mandy George-Shelley after twenty years takes another look at the mouse and discovers a second button which can do so many things, but can be a privacy concern if you right-click the wrong things...
Violence is the last refuge of the incompetent. Polar Scope Align for iOS
Breaking: Journalist discovers exif data, decides it's newsworthy, more at 11.
light value ... that was used when it was taken
This is why I use neutral density filters on my camera... I like to keep private details, like the aperture, private!
That's what this news is all about! Great article!
Next up: Apple TV users can't play MKVs
I turn off the geotagging if I'm posting a picture to social media or going to use the picture in a for sale ad. I don't want everyone to know where I live, especially with the ads, and I don't trust the sites to remove it for me.
What does the picture have to do with the info? It's the camera that encodes it.
Wuddooeyeno? IITYWYBMAD? Like nuts? eclecticallyincorrect.com
In Soviet Amerika, photos look at you!
Looks like someone has just discovered EXIF / IPTC / XMP!
This is a known issue, most social sites, including Facebook, Twitter and Instagram, strip all data, though they may use the title and copyright fields for naming the photo.
And the more specialized photo sharing sites like Flickr and 500px give you various levels of control over the privacy of photo metadata.
OMG!!
Is that they're terrible photographers.
I'll be right back, I have to write a paper on how every internet browser has unique identifiers that can ID the exact computer that is being used to browse any website, no matter how Cowardly they are.
If your computer runs OS X, you can use ImageOptim to easily remove the metadata from your JPEG photos without re-compressing them.
Fight for your bitcoins!
Wow, EXIF has only been around for about 20 years. Good to see that they are doing some hard-hitting journalism over there at IT World from well credentialed writers who can boast about knowing Unix, English, and and how to buy groceries.
The old way: A notebook (the paper kind) with a pencil (this wooden thing with graphite in the center).
THe notebook would record that Roll #3 was Tri-x exposed as rated (400 ASA), that frame 1 was a grey card at f5.6 with a shutter speed of 1/400, and then on and on for each successive frame.. if you gave a rip about how a particular frame was shot.
I'll take exif any day, I just make sure the camera (or device) I'm using doesn't geotag.
The "Civilized World" jumped the shark ca. 1973.
I'm on a mushrooming forum, and members (and more generally any mushroom pickers) are notoriously secretive about the location of their spots. I wrote a script to download images from the site, run them through exitools to check if there are geolocation data and find their spots. I did find some, but unfortunately none close to home.
Non-Linux Penguins ?
for a in *.jpg; do convert -strip "$a" "$a:r.clean.$a:e" ; done
So people on the internet can figure out what shutter speed I was using when I took a photo? I sure hope they can't find any other identifying information like the copyright note with my name that my camera is configured to add.
I'll never post a picture to facebook again! (Oh wait, facebook actually removes all the metadata, which I find rather annoying)
Somebody must have had the same idea. Have you thought of uploading your own, but with the location data frigged? Sewage farm, middle of an airport runway, army practice range ...
If I see it on the news I'll know it was you.
Confucius say, "Find worm in apple - bad. Find half a worm - worse."
That would be a good joke, but I guess people would check on google maps before going and notice something is amiss. And it may backfire if you place them in the middle of a nuclear reactor, you may have some men in black knocking at your door with some questions about your recent whereabouts...
Non-Linux Penguins ?
Next in the series: your phone has your email, phone calls, and even text messages on it. And pictures! And it knows where you are, like a small spy who follows you around constantly.
Moreover, I disallow anyone, family or friend, to post photos of my family, adults or children, online where anyone can see them
Sure. Good luck with that one.
I shoot street and I promise you, I've asked permission from none of the thousands of people I've put online. Don't need to, don't care.
I don't need my camera to tell me that!
Of course, you can rescue anything in post ;)
41.948333, -87.655556 .
Go Cubs!
My ism, it's full of beliefs.
So when you enable geotagging, it tags your photos with your geographic location? Good! That's why I turned it on.
Sorry about that.
My ism, it's full of beliefs.