Exchangeable image files (officially abbreviated as Exif or EXIF, based on the JEIDA / JEITA / CIPA specification are standard formats for image files, sounds, and other additions used by digital cameras (including smartphones), scanners, and other systems related to image recording and sound by digital cameras (https://id.wikipedia.org/wiki/Exchangeable_Image_File).
Not all photographers know EXIF data, but this information will be very useful. Actually, what data is stored in a photograph and what is important for us.
EXIF data contains information when shooting images in several formats. Almost all digital camera manufacturers have supported the EXIF feature and even if you understand or not the ins and outs of the camera. Automatically after we take a photo, the EXIF data will be saved by itself.
How can EXIF data be known ?, following its review:
1. View EXIF data from a digital camera.
The first way to view EXIF data is when the memory card is still in a digital camera, on a Canon DSLR you can do this by pressing the ‘info’ button during Preview mode. You will be faced with information about Shutter Speed, Aperture, shooting date and time and more.
2. View EXIF data from a PC
Another way to view EXIF data is to right-click on an image or image file and click on the properties button, then some information will appear as shown below.
3. View EXIF data is to use editing software or editing software.
For this example using Adobe Photoshop Lightroom 3.3, so in this software in the right sidebar select the Metadata column, and then select EXIF, it will automatically display information like the image below:
Now you can see some information about the photo, including what camera is used, resolution, time and date of shooting, Shutter Speed, ISO, Aperture and even at the bottom there is a Focal Length information used (50mm).
Keep in mind that, maybe with different cameras or different software it will display different detail information too, but basically everything will display basic information.
EXIF data will be very useful in a number of purposes, but the main thing is to make it easier for photographers to compare photos and find out what is right and wrong in the photos.
The following is basic information from EXIF data:
1. Date and time the photo was taken
2. Brand and type of camera to use
3. Type of lens is used
4. Focal length
5. Publicity information, equivalent to: what is the shutter speed, aperture, what is ISO
6. Flash is used or not
7. and if you use a camera with GPS, EXIF also records the place of taking photos
There really is a lot more recorded information besides the information above, but at least you know the big picture.
Benefits of knowing EXIF data:
1. we can compare two photos taken with completely different settings, then see the difference in results so that we can find out which settings are better for certain shooting conditions.
2. We can group photos by lens type, date of shooting or by.
3. We can learn from the work of other photographers, for example you visit the photo sharing site google photo and find a good picture and also you need to understand how the photo was taken.
Using EXIF data may not be something you will do for each of your photos, but it will be very useful if you are just starting to enter the world of digital photography and want to continue to improve your photography techniques.