Aperture refers to the size of the hole in which light travels through to get to the camera sensor. The larger the hole the more light is allowed in. The Aperture is a function of the lens rather than the camera body. The size of the hole in specific lenses is referred to as the F number, and it is measures in stops which is the halfing or doubling of light absorbed by the cameras sensor. The lower the F number the larger the hole in the lens.
Shutter speed is the amount of time that the shutter is open for. Whilst the shutter is open light is being let into the camera to make a still image. The shutter speed can be changed depending on the light quality in the scene, it can also be changed to create different artistic effects. Shutter speed is measured in fractions of a second, the smaller the fraction the faster the shutter speed. I took the two images above using different shutter speeds to show how it can be used in different situations. A fast shutter speed is useful for capturing moving objects as a frozen image, for example this water splash happened quickly therefore a fast shutter speed was needed to freeze the moment in time. A slow shutter speed can be used to enhance motion, for example in this image on the right I shook the camera creating a distorted effect.
Metadata is a set of standardized information about a file, such as author name, resolution, color space, copyright, and keywords applied to it. For example, most digital cameras attach some basic information to an image file, such as height, width, file format, and time the image was taken. You can use metadata to streamline your workflow and organize your files.
Firstly the smaller white box refers to a quick overview of the selected photo; giving the user only the most important information about the selected photo, however, the panel below goes into more detail.
‘File Properties’ describes the characteristics of the file, including the size, creation date, and modification date.
IPTC Core displays editable metadata about the file.