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Image Stabilization

What Does Image Stabilization Mean When Talking About Photography? When talking about photography ‘image stabilization’ refers to a technique used within camera hardware to reduce the effects of camera shake. There are two main types of image stabilization, lens based and camera based. Lens based image stabilization uses floating lens elements which move independently of the lens barrel to reduce the effects shake. Camera based image stabilization allows the image sensor to move independently to the camera body to mimimize unwanted sensor movement. Image stabilization is extremely helpful in any situations which require longer exposure times, for example when hand …

Infra-Red

What Is Infra-Red and How Is It Used When Taking Photographs? The term ‘infra-red’ refers to a frequency of light invisible to the human eye. Infra-red gets it’s name from its position in the light spectrum, between the red edge of the visible spectrum at 700 nanometers and 1mm. Infra-red light can be used to control photographic equipment, a beam of infra-red light can for example be used to trigger an off camera flash unit. Infra-red light is also used in AF assist illuminates found on flash units; a grid of infra-red light is projected over a subject which helps …

Interlaced

What Does Interlaced Mean When Talking About Capturing Videos? When talking about cameras, and specifically recording movies and video, the term ‘interlaced’ refers to a method of capturing moving pictures by splitting an image into two ‘fields’. The odd lines of image sites on the sensors surface are captured first, followed by the even lines. The two fields are then played back as individual frames. Recording interlaced video allows for a reduction in the overall bandwidth required as each frame only contains the information from one field, or half the total image. Interlaced video was widely used in recording for …

Inverse Square Law

What Is the Inverse Square Law and How Is It Used When Taking Photos? The inverse square law is an equation that relates the intensity of a light source to the illumination it produces at a given distance. Light diminishes over distance in accordance with the Inverse square law, which states that doubling the light-to-subject distance reduces the light falling on the subject to one-quarter. The inverse square law can be used to calculate the light output required from a light source when setting up a photographic scene using artificial lighting, the invention of light meters however has mostly illuminated …

KB

What Does KB Mean When Talking About Photography? The acronym ‘KB’ refers to one ‘kilobyte’, a unit of measurement used to describe the size of a digital file. One kilobyte is comprised of 1,024 bytes of digital information. When a picture is captured on a digital camera the resulting file must be stored on the cameras memory; Depending of the resolution of the captured image, and the file format used to encode it, an image will take up a certain number of kilobytes on the cameras memory. Dividing the total size of a camera’s memory in kilobytes by the size …

Kilobyte

What Is a Kilobyte and How Is It Used in Photography? The term ‘kilobyte’ or KB refers to a unit of measurement used to describe the size of a digital file. One kilobyte is comprised of 1,024 bytes of digital information. When a picture is captured on a digital camera the resulting file must be stored on the cameras memory; Depending of the resolution of the captured image, and the file format used to encode it, an image will take up a certain number of kilobytes on the cameras memory. Dividing the total size of a camera’s memory in kilobytes by …

Large Format

What Is a Large Format Camera When Talking About Photography? When talking about cameras and photography the term ‘large format’ refers to a camera which records images in a format larger than 4 x 5 inches. The main advantage of large format cameras is their incredible image resolution. A 4 X 5 inch image has roughly 16 times the image area of that produced by a 35mm camera and therefore 16 times the total image resolution. 4 x 5 inches is the most common large format but cameras have been produced which capture images anywhere up to 20 x 24 …

Latent Image

What Does Latent Image Mean When Talking About Photography? When talking about photography the term ‘latent image’ refers to the invisible image created on a photographic film when the film is exposed to light. The image only becomes visible to the naked eye once the photographic film has been removed from the camera and chemically developed. The latent image is formed by silver atoms clustered on the surface of, or within the silver halide crystals which are in turn coated on the surface of the photographic film. The term latent image has no direct meaning when talking about digital photography.

Light Painting

What Is Light Painting and How Is It Used in Photography? A ‘light painting’ is an image that is created by capturing a long exposure of a dark scene that contains a moving light source. By moving the light source within the scene whilst the photographic medium is being exposed the photographer is able to produce an effect which resembles the brush strokes made by an artist’s paint brush, only composed entirely of light. A classic example of a light painting is writing your name using a sparkler at a firework display. Light Paintings can be created by capturing any …

Lossless

What Does Lossless Mean When Talking About Image Editing? The term ‘lossless’ refers to a form of non-destructive compression which can be applied to a digital file so that it takes up less space than it would in its original format. This allows for more images to be stored on a storage medium. The advantage of lossless compression, and where it gets it’s name from, is that no data is lost during compression. This is particularly important when storing digital photographs as they contain a lot of data which is required to render them correctly. One example of a form …