This stands for ‘autofocus-silent’, and refers to Nikon lenses that use a silent motor to control the autofocus system. A pattern of red light is projected on to the subject, which aids the contrast-detection autofocus to adjust the lens correctly. This is a system used by some cameras and flashguns to assist autofocus operation in poor light. Read more: What is autofocus and how does it work? Manyl modern lenses for digital SLRs have AF, which is achieved via one or more sensors and a motor either integrated in the lens itself In which the lens is adjusted automatically to bring the designated part of the image into sharp focus. Stands for autofocus, a function first introduced on cameras in the late 1970s, The button can also be used for focusing. This is a push-button control that enables you to select the part of the scene from which the camera takes its meter reading, and then lock this setting while the image is re-framed for better composition. This camera feature enables the user to determine the shutter speed and aperture for an image, usually via a TTL (through-the-lens) exposure meter.Īutomatic exposure lock. Read more: What is Adobe Camera Raw (ACR)?Īn abbreviation for automatic exposure. Adobe Camera Raw is frequently updated to support the newest camera models. When you add an adjustment layer, a mask is also automatically created, so that the effect can be applied to a lesser extent (or not at all) in particular areas of the image.Ī plugin included with Photoshop and Photoshop Elements that enables users to process and edit raw files. The adjustment can be altered, hidden or removed at any point. Like a red Cellophane overlay on a print, an adjustment layer will alter the appearance of layers below it, but not actually alter their content, making adjustment layers a cornerstone of reversible, ‘non-destructive’ editing. This is a layer containing an image adjustment or effect instead of image content. Together with Fred Archer, he formulated the Zone System as a way to determine the optimum exposure for a negative. His black-and-white landscapes of the American West, and particularly Yosemite National Park. In photography, this term refers to images that concentrate on aspects of a subject such as shape, form, color and texture, instead of a straightforward representationĪdams (1902-1984) was an influential American photographer, acclaimed for Read more: What are lens aberrations? Lens defects explained Read more: Video jargon explained AĪn optical fault in a lens that creates a less-than-perfect image. Most video in consumer cameras uses 8-bit capture (just as JPEG images from cameras are 8-bit), but more advanced video cameras may offer 10-bit capture, which gives more editing leeway later on in post production.
#IS DEXIS PLATINUM CCD OR CMOS FULL#
It doubles the horizontal and vertical resolution of 4K video and is to 4K what 4K is to full HD. Read more: What is 5G?ĨK video is a new, high-resolution video standard for video with a horizontal resolution of around 8,000 pixels. Using higher frequencies with much shorter wavelengths than 4G, 5G networks can far exceed fibre-optic networks, but wirelessly. Read more: What is 4K?ĥG simply means the fifth generation of standards for mobile networks. Video with a horizontal resolution of around 4,000 pixels, including 4K UHD (3,840 pixels wide) and C4K (4,096 pixels wide). Read more: What is a 360 camera and how do you use them? 1-9Ī camera with two back to back 180+ degree fisheye lenses that can capture a full spherical view of the world around the camera. In addition to the gear and techniques, we also pull out some of the most influential photographers and inventors from the history of photography. From the letters found on lenses, through the names of obscure lighting accessories, in the glossary below you will find a full A to Z of what these terms mean. With a history stretching back almost 200 years, the dictionary of photographic terms has grown enormously.