viewfinder


Also found in: Dictionary, Thesaurus, Legal, Financial, Acronyms, Wikipedia.

viewfinder

a device on a camera, consisting of a lens system and sometimes a ground-glass screen, enabling the user to see what will be included in his photograph

Viewfinder

 

an optical device on still and movie cameras that is used for determining the borders (frame) of the image of an object that is being photographed. A viewfinder is de-signed for a camera lens with a fixed focal length. Cameras with interchangeable lenses having different focal lengths require the use of separate viewfinder attachments for each lens or of universal viewfinders, which consist of a set of miniature lenses with different focal lengths, mounted on a rotating disk. Types of viewfinders include the frame (iconometers), telescopic, and reflecting. Professional movie cameras often have mirror viewfinders with a mat collective lens and a sight.

Parallax, which is the difference between the borders of the image as observed in the viewfinder and as actually re-corded on the film, occurs when the optical axis of the viewfinder does not coincide with the optical axis of the camera lens. Parallax is especially great when photographing at small distances. A series of rectangular frames that permit corrections when photographing at various distances are mounted in the field of view of some viewfinders to eliminate parallax. Parallax is absent in single-lens reflex cameras and in movie cameras with a mirror shutter. In some cameras (for example, the FED and Zorkii) the viewfinder is coupled in a single unit with an optical range finder.

viewfinder

[′vyü‚fīn·dər]
(electronics)
An auxiliary optical or electronic device attached to a television camera so the operator can see the scene as the camera sees it.
(optics)
A device which provides the user of a camera with the view of the subject that is focused by the lens.

viewfinder

The preview window on a camera that is used to frame, focus and take the picture. The viewfinder is an eye-sized window that requires the camera to be pressed against the face. All analog cameras have viewfinders but not all digitals have them. Professional photographers generally prefer a viewfinder because it helps them hold the camera steady and allows them to focus on framing the scene without distraction.

Types of Cameras
Many point-and-shoot cameras have only an LCD display for previewing the image. Prosumer and digital single lens reflex (DSLR) cameras have both the screen and a viewfinder, which can be an optical lens or a tiny microdisplay. The first DSLRs did not have a "live preview" and used the screen only to display images after they were taken. See DSLR, prosumer and parallax error.


Viewfinder and LCD
This prosumer camera has both viewfinder and live preview screen. The viewfinder has two advantages. Since it is held against the face, it helps steady the camera and uses less battery if the screen is turned off.
References in periodicals archive ?
But while the vision it creates is the smoothest and purest yet on a digital camera, the X-T1's viewfinder also packs in breakthrough technologies to help your photography.
ViewFinder was founded in 2008 and is Switzerland's first English-language photography learning centre.
The review button is placed on the right hand side of the viewfinder whereas the programmable shortcut key is placed on the left hand side.
Still and video shooting, framing, focusing and real-time preview of exposure adjustments are a pleasure with the new Tru-Finder electronic viewfinder. With ultra-detailed 1440k dot resolution and a 100% field of view, it rivals quality optical viewfinders.
Use the ball head to tweak the camera's position until it's pointed at the center of the circle that the stars traced in the viewfinder (this aligns the center of the viewfinder with the rotational axis of the hinge).
Users look through the viewfinder at the liquid metal (in the furnace or during pouring), pull the trigger and the Meltmaster uses advanced, noise-rejection processing to lock onto the real temperature.
Redcar & Cleveland Council use a cross section of their local residents to form what is know as The Viewfinder Panel, of which there are 1,600 residents.
Both units display all three measurements--line-of-sight distance, horizontal distance, and angle--in the viewfinder. The Opti-Logic displays only the corrected (horizontal) distance.
Still looking through my viewfinder, I refocus and see him turn and look at me.
The Canon PowerShot SD700 IS is a digital powerhouse, It offers 6.0 megapixels, 4x optical zoom viewfinder, and more than 20 shooting modes.
First, and most important, is when we look into our viewfinder to make the picture itself.
The Kodak EasyShare-One Zoom digital camera features a 3-inch "swing-out, LCD (no viewfinder), four picture-quality settings, 4.23-megapixel maximum resolution, 18 scene modes, a 3x zoom 36-108mm Schneider-Kreuznach C-Variogon lens, a 2- to 30-second self-timer, four light balance modes, and a 1.5-second delay between exposures.