Looking to brush up on your photography vocabulary or learn how to use camera equipment? Look no further than our Glossary category!
Gamma is a mathematical function that describes the relationship between the numerical pixel values in an image file and the actual brightness levels we perceive. This non-linear function typically follows a logarithmic curve, where the output brightness is proportional to…
The head position range refers to the specific measurement from the chin to the crown in a visa photo. This measurement is crucial, as it must fall within a specific range to ensure the proper framing and proportions of the…
Aspect ratio refers to the proportional relationship between the width and height of an image, video, or display. It is typically expressed as a ratio, such as 4:3 or 16:9. The aspect ratio is an important factor in determining the…
Compression artifacts refer to the visible distortions or imperfections that can occur in digital images due to the process of data compression. This technique is used to reduce the file size of an image by removing or approximating certain information,…
The .jpg (Joint Photographic Experts Group) file format is a widely recognized and commonly used digital image standard. This compressed file type preserves image quality while ensuring manageable file sizes, making it suitable for various applications, including submission for the…
Noise can be summarized as the visible effects of an electronic error (or interference) in the final image from a digital camera. Noise is a function of how well the sensor (CCD/CMOS) and digital signal processing systems inside the digital…
Digital information is a system that represents data using binary digits, known as “bits.” These bits have two possible states: “0” and “1,” or “on” and “off,” which makes them easily processed by electronic systems. Analog information, on the other…
The perceived color of an object is affected by the color of the lighting under which it is viewed. The human brain is capable of detecting and compensating for such changes in perceived color. As a result, a white object…
Chromatic aberration is an optical defect that occurs in a lens, causing different wavelengths or colors of light to be focused at different distances from the lens. This results in the appearance of color fringes or halos along the edges…
Each pixel in an image can represent a range of grayscale values. An 8-bit per color channel image, also known as a 24-bit image, can display up to 16.7 million distinct colors (8 bits x 3 color channels = 24…