afocal lens
11Digiscoping — Spotting scope with a digital camera mounted afocally using an adapter. Digiscoping is a neologism for the activity of using a digital camera to record distant images by coupling it with an optical telescope. The term usually refers to using… …
12Cardinal point (optics) — For other uses, see Cardinal point (disambiguation). In Gaussian optics, the cardinal points consist of three pairs of points located on the optical axis of an ideal, rotationally symmetric, focal, optical system. For ideal systems, the basic… …
13photography, technology of — Introduction equipment, techniques, and processes used in the production of photographs. The most widely used photographic process is the black and white negative–positive system (Figure 1 >). In the camera the lens projects an image of… …
14Photography — is the art, science and practice of creating durable images by recording light or other electromagnetic radiation, either electronically by means of an image sensor or chemically by means of a light sensitive material such as photographic… …
15Digital camera astrophotography — is astrophotography using common digital cameras mounted on clock driven telescopes. The cameras are typically medium to high range D SLRs with remote control, long exposure capability and high settings. Due to the wide field of the cameras… …
16Depth of field — The area within the depth of field appears sharp, while the areas in front of and beyond the depth of field appear blurry …
17Camera — For other uses, see Camera (disambiguation). Various cameras A camera is a device that records and stores images. These images may be still photographs or moving images such as videos or movies. The term camera comes from the camera obscura… …
18Digital camera — Digicam redirects here. For the military camouflauge method using micropatterns, see Military camouflage#Digital camouflauge. A digital camera (or digicam) is a camera that takes video or still photographs, or both, digitally by recording images… …
19Circle of confusion — For the closely related topic in microscopy, see Point spread function. In optics, a circle of confusion is an optical spot caused by a cone of light rays from a lens not coming to a perfect focus when imaging a point source. It is also known as… …
20Photographic filter — Four photographic filters. Clockwise, from top left, an infrared hot mirror filter, a polarising filter, and a UV filter. The larger filter is a polariser for Cokin style filter mounts. In photography and videography, a filter is a camera… …
