Exif (Exchangeable Image File Format) is basically used in photography area which refers to the informations stored in a photo or video that recorded before by digital cameras. When this technology has not been invented yet, photographers should have a special note to write and record the important informations after took photos, such as date, aperture, shutter speed, etc. Then they use this information in their laboratorium or other research to compare one picture to other picture. Such informations would be useful in order to the best photo compositions.
Now, all the informations above have been discovered in every modern digital cameras. With this Exif data, we can also distinguish whether photos still be in original version or have undergone a several modification through post processing softwares such as Photoshop and others. If a picture information which reflected by Exif data is unreadable, it most likely the image is no longer as original version. Further, in many photography competitions, the committee usually requires that Exif data in every photo submitted should remains readable properly.
You can explore or see the Exif data of your photos by using various Exif data softwares on your PC. One of them that can be used is Photoscape. Here’s how to use Photoscape to read Exif data :
- Open Photoscape at your desktop (if you do not have, install first on your PC by downloading it from their own website at http://www.photoscape.org or third party page).
- Click “Editor” menu.
- Find the photo stored at your PC directory which Exif data will be explored.
- Click “Menu” button and then choose “Exif Info”.
The example of Exif data collected using Photoscape is as shown in the table below :
|Maker||: NIKON CORPORATION|
|Model||: NIKON D5100|
|Date||: 2017:01:08 09:18:08|
|Resolution||: 3696 x 2448|
|Flash||: did not fire|
|Focal Length||: 26.0mm|
|Exposure Time||: 1/640s|
|ISO Value||: 400|
|Exposure Bias||: 0.00 EV|
|White Balance||: Auto|
|Metering Mode||: matrix|
|Exposure||: shutter priority (semi-auto)|
|DPI||: 300 DPI|