Is a digital camera's make and model somehow embedded into a JPEG file?

I was curious because on the Beta of the new Yahoo! Photos, it tells you the make and model of the camera used to shoot the picture.

If you have a source to cite, the reference would be appreciated.

I'm actually looking for information on HOW it is embedded into the JPG. Is there a specification somewhere?

the data is ina section of the jpeg file.
The format is called EXIF
You can find the EXIF specifications at http://www.exif.org/specifications.html

cameras write the make, model, speed and aperture, sensitivity, date and time, etc.

No, the camera can print time date on the picture. Some cameras have cheap photo editing software, you can use it to print text on the picture. Even cut/crop.

Yes it does Neil S you have no idea what you are talking about!!

Asuming you have a decent camera, right click on the photo, go to properties, click on the summary and and then the advanced option it will give you the info there

Yes, it is. When a digital camera makes a picture, it creates an EXIF file (Exchangeable Image File). In addition to the name of the camera, day and date, ISO at which it was set, shutter speed and aperture, it may also record the focal length at which the picture was shot (for a zoom lens), the exposure compensation you dialed in, the flash mode, the flash compensation you chose, the white balance (auto or what you chose) and so forth. Your camera's manual is the best source for looking up what its EXIF file records.

This has NOTHING to do with the date stamp on the picture. The person who wrote that does not know the answer.


http://graphicssoft.about.com/gi/dynamic...

I don't know actually HOW the embedding takes place, but the "Properties>Summary>Advanced" solution given by the reader above will show that data.

Your camera's processor is programmed to create an EXIF descriptor section in each JPEG file. This contains the kind of information you mention.

The camera manufacturer decided what info to put in the EXIF descriptor. You do not have any control of it.

However, if you use photo editing software to save the pic in a new JPEG file, you can put some of your own comments and data into the new EXIF descriptor.

. Use "Save As" to save the pic as a JPEG file
. Right Click the new pic, and select Properties
. Select the Summary Tab, and choose Simple (if not already there)
. Insert your own data in the boxes, then click Apply
. Click Advanced to see the basic data with your data

Good Luck