enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Prism correction - Wikipedia

   en.wikipedia.org/wiki/Prism_correction

   Eye care professionals use prism correction as a component of some eyeglass prescriptions. A lens which includes some amount of prism correction will displace the viewed image horizontally, vertically, or a combination of both directions. The most common application for this is the treatment of strabismus. By moving the image in front of the ...

3. History of photographic lens design - Wikipedia

   en.wikipedia.org/wiki/History_of_photographic...

   The first auto-everything 35mm point-and-shoot camera with built-in zoom lens, the camera type that dominated the 1990s, was the Asahi Optical Pentax IQZoom (1987, Japan) with Pentax Zoom 35-70mm f/3.5-6.7 Tele-Macro. [113] The next landmark zoom was the Sigma 21-35mm f/3.5-4 (Japan) of 1981. It was the first super-wide angle zoom lens for ...

4. Chromatic aberration - Wikipedia

   en.wikipedia.org/wiki/Chromatic_aberration

   Telephoto lenses using diffractive elements to minimize chromatic aberration are commercially available from Canon and Nikon for interchangeable-lens cameras; these include 800mm f/6.3, 500mm f/5.6, and 300mm f/4 models by Nikon (branded as "phase fresnel" or PF), and 800mm f/11, 600mm f/11, and 400mm f/4 models by Canon (branded as ...

5. Distortion (optics) - Wikipedia

   en.wikipedia.org/wiki/Distortion_(optics)

   Simulated animation of globe effect (right) compared with a simple pan (left) In photography, distortion is particularly associated with zoom lenses, particularly large-range zooms, but may also be found in prime lenses, and depends on focal distance – for example, the Canon EF 50mm f / 1.4 exhibits barrel distortion at extremely short focal distances.

6. Single-lens reflex camera - Wikipedia

   en.wikipedia.org/wiki/Single-lens_reflex_camera

   A single-lens reflex camera (SLR) is a camera that typically uses a mirror and prism system (hence "reflex" from the mirror's reflection) that permits the photographer to view through the lens and see exactly what will be captured. With twin lens reflex and rangefinder cameras, the viewed image could be significantly different from the final image.

7. Canon New F-1 - Wikipedia

   en.wikipedia.org/wiki/Canon_New_F-1

   The New F-1 is an expandable system. It includes interchangeable viewfinders, focusing screens, motor drives, and alternate backs, all of which are specific to the New F-1. All other Canon components, such as the FD lens series, close up accessories (bellows, extension tubes, etc.), and Canon A and T Speedlights (except the 300TL) are also ...