Exif Data Viewer

EXIF stands for Exchangeable Image File, a format that is the standard for storing exchange information in image files of digital photographs using JPEG compression. Almost all new digital cameras use EXIF annotation to store image information such as exposure time, exposure compensation, f-number, metering system used, flash used, ISO number, date and time of image capture, white balance, additional lenses used, and resolution. Some images may even store GPS information, allowing you to easily see where the images were taken!

SAS tools are an online tool that lets you explore your favorite images in more detail!

How to see where a photo was taken?

The EXIF ​​viewer tool will automatically show you the location of your photo on Google Maps using the GPS data embedded in the photo (if available). The photo location viewer is a convenient feature if you can’t remember where your photo was taken. The location viewer will only work if location data is embedded in the photo. Not all cameras support GPS location data, and people often remove location data before posting images.

Some camera manufacturers (Nikon, FujiFilm, etc.) also record the shutter count in EXIF data.

Date and time, ƒ-number (aperture), ISO sensitivity, white balance (WB), exposure metering, orientation, resolution, exposure compensation, used lens, and more...

EXIF (Exchangeable Image File) is a format for storing image information within the image file itself. It is used by digital cameras, smartphones, tablets, and other devices.

Open a photo from your desktop or mobile device.

What are EXIF data?

Almost all digital cameras use the EXIF standard and store a wide range of metadata. You can view some of this metadata using this EXIF ​​data viewer tool, such as:

• Date and time information. Digital cameras will record the current date and time and save it in the metadata.
• Camera settings. This includes static information such as the camera model and manufacturer, as well as information that changes with each image, such as orientation (rotation), f-number, exposure time, metering system, orientation, focal length, white balance, and ISO sensitivity information.
• A thumbnail for previewing the image on the camera s LCD screen, in file managers, or in photo editing software.
• Descriptions
• GPS information for determining the location where the photo was taken
• Shutter count (currently only for Nikon – where available)
• Copyright information

Geolocation

The EXIF format has several tags for location information. Many newer cameras and phones (2014 and newer) have built-in GPS receivers that store location information when a photo is taken. This online EXIF location viewer displays a map and address if the photo contains GPS location data.

What is the ƒ-number?

The ƒ-number is the ratio of the focal length of the lens to the diameter of the aperture and is a measure of the lens’s light-gathering ability — an important concept in photography. It is usually denoted using the hook ƒ in the format ƒ/n, where n is the ƒ-number, such as ƒ/1.8 or ƒ/2.8.

What is lens speed?

You’ve probably heard about fast and slow lenses but may not fully understand what it means. What does "fast" and "slow" mean when we talk about camera lenses?

Lens speed has nothing to do with movement or shutter speed. It refers to how much light passes through the lens when the shutter is open. Lens speed is controlled by the lens’s aperture, which determines the size of the aperture. The faster the lens, the larger the maximum aperture, and more light will hit the sensor (or film) at the same exposure time. Fast lenses with a wide open aperture can isolate a subject from the background. Such a shallow depth of field opens endless creative possibilities and can add emotion to an otherwise dull photo.

What is a fast lens?

A fast lens is generally defined by the size of its maximum aperture. The smaller the ƒ-number, the larger the aperture, and the more light passes through when the shutter is open. Higher ƒ-numbers correspond to smaller apertures. Typical ƒ-numbers halve or double the amount of light reaching the sensor. They are known as ƒ-stops. Moving from ƒ/5.6 to ƒ/8 means using only half the amount of light to expose the image. In this case, we stopped down one aperture stop. To get the same exposure at ƒ/8, you would need a longer exposure time than at ƒ/5.6 to let in the same amount of light. An ƒ/1.4 lens is twice as fast as an ƒ/2.0 lens.

What is Exposure Value (EV)?

Exposure Value (EV) is a number representing a combination of camera shutter speed and f-number. The EV number represents a set of equivalent exposures. Along with ISO value, the camera can be set to the correct exposure. The EV number actually names (in this case, the number) settings of "equivalent exposure." +/- 1 EV is another way to change the exposure by 1 stop. Camera exposure compensation (or shift) allows the photographer to adjust exposure to get a brighter or darker exposure.

What is ISO?

ISO in film photography

In film photography, ISO (or ASA) is a measure of how sensitive (or light-gathering) the film is to light. It is measured by numbers: 50, 100, 200, 400, 800, etc. The higher the number, the higher the sensitivity (or light-gathering) of the film, and the grainier the photos will be.

What’s the difference between ASA and ISO?

ASA and ISO are measures of film light sensitivity (or light sensitivity). The ASA scale was created by the American Standards Association. ASA is no longer widely used, with most films using ISO numbers. The ISO scale was created by the International Organization for Standardization, which is a global federation of standards bodies working on developing standards for almost every conceivable topic. Film sensitivity is one such topic.

ISO in digital photography

In digital photography, ISO measures the sensitivity of the image sensor.

Here the same principles apply as in film photography: the higher the number, the more sensitive the sensor is to light, and the grainier the image will be.

Lower values mean your sensor becomes less sensitive to light.

Higher ISO values allow you to take photos in darker places but at the cost of greater image grain. Other factors, such as the sensor and pixel size, affect the amount of noise (or grain) introduced. Larger sensors with bigger pixels typically produce less noise at higher ISO values. However, as sensors improve, the noise/grain introduced by higher ISO values becomes less noticeable.

What is YCbCr?

YCbCr is one of the two main color spaces used in video systems and digital photography (the other being RGB). YCbCr differs from RGB in that YCbCr represents color as brightness and two chrominance signals, whereas RGB represents color as red, green, and blue. In YCbCr, Y is brightness (or luminance), Cb is blue minus brightness (BY), and Cr is red minus brightness (RY).

What is White Balance in Photography?

When you take photos, whether indoors or outdoors under sunlight, the light source affects the scene you re capturing. White objects can take on a color other than white, often with a blue or orange hue depending on the light source. We use white balance to adjust the color temperature and tone to match the light source so white objects appear white.

Fortunately, cameras allow you to easily adjust the white balance to avoid unwanted results. All cameras have an automatic white balance setting that adjusts the image by removing unwanted color casts, such as making photos taken under incandescent light appear bluer.

Photographers who need more control over white balance can typically choose from some preset white balance options, which adjust the photo for specific lighting conditions. You’ll see settings such as Tungsten, Cloudy, Fluorescent, Shade, Daylight, Flash, Underwater, and so on. Some cameras also allow you to define a custom preset where you can create your own white balance settings. The preset guide will show this white balance setting on your camera.

What is Orientation (rotation)?

The EXIF standard defines 8 orientations:

1. Horizontal (normal)
2. Mirror horizontal
3. 180 degrees rotated
4. Mirror vertical
5. Mirror horizontal then rotate 90° counterclockwise
6. Rotate 90° clockwise
7. Mirror horizontal then rotate 90° clockwise
8. Rotate 90° counterclockwise

Orientation is an indicator in EXIF data of how the photo was taken (portrait, landscape, etc.). It allows apps to determine how to rotate the image for proper display. When taking a photo, your camera typically uses only 4 rotation settings (i.e., non-mirrored, as shown to the left in the image above).