The apparent displacement, or difference of position, of an object, as seen from two different stations, or points of view.
The apparent difference in position of a body (as the sun, or a star) as seen from some point on the earth's surface, and as seen from some other conventional point, as the earth's center or the sun.
The apparent shift in position of a nearby object, relative to more distant ones, as the observer changes position. Using basic trigonometry, it is possible to derive the distance of a star as observed from opposite points on Earth's orbit.
The difference between what is seen through the optical viewfinder and what is seen on the LCD viewfinder because the viewfinder is separate from the lens. This issue does not affect SLR cameras.
change in direction to object observed from two locations.
The angle formed by two different views of an object.
The apparent change in direction or position of an object as seen from two different points. In astronomy, parallax refers to the change in angle of a celestial body caused by viewing it from the surface rather than the center of the Earth (diurnal or geocentric parallax), or from the Earth at different locations on the Earth's orbit around the sun (annual or heliocentric parallax).
With a lens-shutter camera, parallax is the difference between what the viewfinder sees and what the camera records, especially at close distances. This is caused by the separation between the viewfinder and the picture-taking lens. There is no parallax with single-lens-reflex cameras because when you look through the viewfinder, you are viewing the subject through the picture-taking lens.
The apparent angular displacement of an object as seen in an aerial photograph with respect to a point of reference or coordinate system. Parallax is caused by a difference in altitude or point of observation.
Change in the apparent position of objects when viewed from two widely separated positions.
The difference between what is seen through the viewfinder and what the camera records on film, caused by the viewfinder being separate from the camera lens.
The apparent convergence of parallel lines.
The apparent shift in position of an object relative to background objects when observed from two different locations. An everyday demonstration of parallax is easy to try: hold a finger in front of your face, and without moving it, wink one eye and then the other. When you see the position of your finger change with respect to the background, you are seeing parallax. Astronomers measure the parallax of a stars close to the Earth using Earth's orbital diameter as a baseline. The astronomer observes a star at a six-month interval, when the Earth is at opposite ends of an imaginary baseline defined by the width of its orbit around the Sun. Astronomers look for a parallax shift in the two images of the star, and if they find one, they can use simple geometry to estimate the star's distance from Earth.
In camera work, the viewfinder often is mounted with its optical axis at an appreciable distance from the optical axis of the camera lens, commonly resulting in inadvertent positional errors in framing.
The apparent movement of an object seen from two different points not on a straight line from the object (e.g., from your two different eyes).
The difference in point of view that occurs when the taking lens is separate from the viewing lens.
The apparent displacement of an observed object due to a change in the position of the observer. Parallax error can cause a misreading of a scale or a dial. See also parallax error
Apparent shift in the position of an object when observed from two different placed.
The difference in point of view that occurs when the lens (or other device) through which the eye views a scene is separate from the lens that exposes the film.
The different image content that results from slightly different viewpoints. What you see isn't exactly what you get.
(a) When used by itself, the word "parallax" refers to trigonometric parallax, half the angle through which a star appears to be displaced when the earth moves from one side of the sun to the other, that is, through 2 A.U. The parallax of a star is inversely proportional to the distance to the star from the sun. (b) Some of the other ways of measuring distances, usually in those cases referred to with an adjective, as in spectroscopic parallax.
if you shoot a sequence of images for creating a panorama without using a pano-head and tripod you will suffer from parallax. It may be barely noticeable, or it may completely ruin the panorama. The most important factors are: how far off-centre the camera lens's nodal point is when turning, the angle of view of the lens (wider is worse), and how short a distance there is from the camera to the nearest object (shorter is worse). See What is Parallax
The apparent change of the position of an object, caused by a lateral, or sideways, change in the position of an observer. Specifically, in astronomy, stellar parallax.
The change in apparent position of one object with respect to a further one. A source of possible error in many kinds of observation.
the difference in apparent direction of an object as seen from two different locations; conversely, the angle at the object that is subtended by the line joining two designated points. Geocentric (diurnal) parallax is the difference in direction between a topocentric observation and a hypothetical geocentric observation. Heliocentric or annual parallax is the difference between hypothetical geocentric and heliocentric observations; it is the angle subtended at the observed object by the semimajor axis of the Earth's orbit. (See also horizontal parallax.)
The apparent change in position of a star caused by the annual motion of the earth.
The apparent change of position of a close object compared to a more distant object when the viewer shifts the position from which he views the object (try this: hold your finger close to your face and look at it first with one eye, and then the other. The finger will appear to move).
when the observer moves, objects that are closer appear to shift from side to side. This is called parallax, and it can be used to determine the distance to nearby stars.
In tidal work, the term refers to horizontal parallax, which is the angle formed at the center of a celestial body between a line to the center of the Earth and a line tangent to the Earth's surface. It may also be expressed as an angle whose sine equals the Earth's radius divided by the distance of the celestial body, or, since the sine of a small angle is approximately equal to the angle itself in radians, it is usually taken in tidal work simply as the ratio of the mean radius of the Earth to the distance of the tide-producing body. Since the parallax is a function of the distance of a celestial body, the term is applied to tidal inequalities arising from the changing distance of the tide-producing body.
The apparent shift of an object as it is observed from different locations. For example, having two eyes allows your brain to consider the parallax and gives you the benefit of improved depth perception. Similarly in photogrammetry, the parallax for a point that appears in overlapping photographs is used to determine its elevation. See Also: photogrammetry
A star's apparent motion over the celestial sphere, or sky, of a planet. Measured in arc seconds, it is used to determine the distance to the star (a larger parallax indicates the star is closer).
an apparent shifting of an object's position resulting from observing the object from two different vantage points. Stellar parallaxes are seen when we view nearby stars from opposite sides of the Earth's orbit.
The change in the position of an object in the heavens due to the orbit of the earth. Observable parallax in the fixed stars is a proof of the rotation of the earth around the sun. See this explanatory diagram.
Viewing error that represents the reticle and the target as being parallel, not in line. Parallax is influenced by two factors, the angle of the viewer's eye, and the internal design. It can be seen by leaving the gun at rest with a scope centered on the target, and then moving the one's head left, right, and up, down. Apparent movement of the reticles across the target is parallax error. Parallax can be corrected for, but only at a set distance. Most scopes have fixed parallax correction at 100 or 150 yards. Shotgun scopes are usually set to 50 yards. Target scopes have Adjustable Objectives with range markings for correction. Cheap scopes, very high power scopes and variable scopes with a very large range of power adjustment typically have the most problems with parallax. Cheap scopes often experience zero shift when adjusting the parallax.
the apparent displacement of an object as seen from two different points that are not on a line with the object
an apparent shift in the position of nearby stars relative to distant stars
Difference in the view seen by the finder of the camera and recorded on the film. Arises from the fact that usually the optical axis of the finder does not coincide with that of the lens. Can be compensated in various ways, but is worrisome only at nearer subject distances.
Change in perspective due to different locations of lenses for framing and shooting.
The difference in angle between altitude as measured at the center of the earth and as measured at the surface of the earth.
The difference between what the viewfinder sees and what the camera records. Typical of lens/shutter cameras and is caused by a separation of the viewfinder and the picture taking lens (ie the user is not viewing the image through the picture taking lens).
difference in viewing angle created by having two eyes looking at the same scene from slightly different positions, which creates a depth cue, and can create apparent movement of object arising from change in position of observer
The apparent change in location of a object due to the change in position of the observer. Astronomical parallax is measured in seconds of arc.
A change in position of the object, as viewed through an instrument, if the viewing eye is moved. Parallax correction is especially important for a riflescope.
The apparent shift in position of a celestial object when viewed from different directions.
(Trigonometric) ( - pi ) ( arc seconds ) - An angular value derived from a method to determine the distance () to the nearby stars Used are the radius of the Earth's orbit which is also the distance to the Sun called 1 AU (astronomical unit) and one-half of the displacement of the star against the background of more distant stars when viewed from points in Earth's orbit six months apart. Tangent = 1 AU / d. Since the distances involved are very large, a more convenient unit called a parsec is used ( 1 pc = 3.26 light years = 206,265 AU ) thus = 1 / Parallax.
The apparent shift in position of an object when it is viewed from two different points. The parallax of a star is measured from opposite ends of Earth's orbit. For even the nearest stars this shift is less than one second of arc.
The angle between the directions in which an object is seen from two different positions. The parallax of an object seen with the left and right eye helps create depth perception. The stellar parallax (stellar=of a star) is the angle between the directions a star appears to us, when viewed from opposite sides of the Earth's orbit, half a year apart. Even though that distance is 300 million kilometers, the stars are so much more distant that even for the closest star the parallax is only 3/4 of a second of arc. See parsec.
Looking through a camera viewfinder does not always display the true picture - the closer one is to an object, the more the so-called parallax error takes effect. This is because in some compact cameras, viewfinder and lens are a few centimeters apart. When taking close-up photos it is therefore a good idea to use the LCD viewfinder.
The tiny periodic shift of the apparent positions of nearby stars due to the changing position of the Earth as it orbits the Sun. The nearer the star is, the larger the shift. The distance to stars in parsecs is simply 1/parallax, (or in light years it is 3.2616/parallax) where the parallax is in arcseconds.
This effect is due to the observer being on the surface of the Earth (not the centre) in combination with the relative proximity of the Moon in astronomical terms. The effect of parallax is about 1°.
Occurs in telescopic sights when the primary image of the objective lens does not coincide with the reticle. In practice. parallax is detected in the scope when, as the viewing eye is moved laterally. the image and the reticle appear to move in relation to each other.
The apparent movement of the target in relation to the Reticle when the shooter moves his eye in relation to the ocular lens. When the target's image is not focused on the same focal plane as the riflescope's reticle, a parallax error is the result. For varmint shooters, improper Parallax adjustment can easily make the difference between a hit and a miss.
The angular difference in apparent direction of an object seen from two different viewpoints.
An optical illusion which occurs in analog meters and causes reading errors. It occurs when the viewing eye is not in the same plane, perpendicular to the meter face, as the indicating needle.
The apparent displacement or change of position of an object when viewed from different places; such as the alternate use of the right and left eve.
Illusion of opacity resulting from the juxtaposition of translucent or polarized surfaces. Also achieved when rows of panels or fins are spaced in such a way as to be seen through when viewed directly, but that appear to be opaque when viewed from an angle.
An effect produced with a viewfinder camera shooting close up. The scene through the viewfinder is offset by the scene through the lens due to the distance between the two.
The apparent shift in objects/elements between right and left perspective views. The greater the parallax shift the greater the apparent depth.
the apparent shift of a relatively nearby object against a fixed background due to the motion of the observer; astronomers observe the parallax of stars to measure their distances
The apparent shift in position of one object to another when seen from different points of view. The difference in the angle of view between one line of sight and another. For example, what the right eye sees is slightly different than what the left eye sees. This difference is called parallax. In a range finder camera, the difference between what is seen in the viewfinder and what is actually recorded on film is parallax. Parallax will be more pronounced the closer objects are.
The apparent motion of a relatively close object compared to a more distant background as the location of the observer changes. Astronomically, it is half the angle which a star appears to move as the Earth moves from one side of the Sun to the other.
A condition that occurs when the image of the target is not focused precisely on the reticle plane. Parallax is visible as an apparent movement between the reticle and the target when the shooter moves his head or, in extreme cases, as an out-of-focus image. Tasco center-fire riflescopes under 11x are factory-set parallax-free at 100 yards; rim-fire and shotgun scopes at 50 yards. Some high power scopes have a special range focus to adjust for parallax.
The difference in appearance in an object when seen from different perspectives. The parallax between left and right eye views produces 3-D perception. Holograms are unique in providing a wide, continuous range of parallax on the image.
The apparent change in the position of one object relative to another when seen from a different location.
The difference between the field of view seen through a camera's viewfinder and the image recorded on film by the taking lens of a twin lens reflex camera.Parallax is due to the distance between the viewfinder and taking lenses on rangefinder and twin lens reflex cameras and is most evident at close subject distances. SLR cameras don't have the problem because the subject is viewed through the taking lens.
An apparent displacement of a nearby star that results from the motion of the Earth around the Sun; numerically, the angle subtended by 1 AU at the distance of a particular star.
(1) An apparent change in position of one object relative to another when viewed from different positions. (2) The change in position of an image from one aerial photograph to the next as a result of the aircraft's motion.
The difference between the image that comes through the camera's lens and the image that the camera operator sees through the viewfinder.
The difference between the image seen by a viewing system and that recorded by the sensor or the film. As subjects move closer to the lens, the variance increases. Only through the lens (TTL) viewing systems avoid parallax error.
The apparent movement of an object across the sky when seen from two different points, which can then be used to calculate the distance to the object by triangulation.
In a 3D image, the phenomenon where objects in a scene seem to shift relative to one another as the angle of view is changed. Objects closer, or in front of the keyplane, will be opposite objects behind the keyplane. back
The different framing of a picture seen through separate viewfinder. Parallax is especially big when shooting close-ups.
Viewfinder inaccuracy due to the viewfinder and lens seeing the subject from slightly different angles. Parallax increases as you move closer to the subject. One of the benefits of the SLR camera design is the absence of parallax.
Apparent change in the position of the object caused by actual change in the point of view of observation. Parallax may be used to create stereo viewing of radar images.
modification of the apparent position of a star, when observed from two different points. The Parallax allowed to measure the distance of the nearest stars.
The apparent shift in position of a viewed object attributable to the difference between two separate and distinct points of view. A major problem for users of telescopic sights without parallax adjustment, as these sights will only be free of error at one distance, usually 100 yards. Note that this is not the same thing as focussing and if a telescopic sight does not have an adjuster ring near the object lens, then almost certainly it does not have parallax adjustment. This means that apart from the one distance it is parallax free (usually 100 yards) it will be of little value for accurate target shooting purposes, no matter with what gun or ammunition it is used.
The change in an object's apparent position when viewed from two different locations; specifically, half the angular shift of a star's apparent position as seen from opposite ends of the Earth's orbit.
A focusing error introduced in a typical optical rangefinder at extremely close range; caused by the discrepancy between the optical viewfinder and the camera lens.
The apparent displacement of the position of a body, with respect to a reference point or system, caused by a shift in the point of observation.
In rangefinder cameras, the difference between the image seen by the lens and the viewfinder. The discrepancy increases as the subject moves closer to the camera. This does not occur in SLR cameras
The apparent movement of an object viewed through a lens when the position of observation is moved laterally.
An effect seen in close-up photography when the viewfinder is offset by some distance from the lens. The scene through the viewfinder is offset from the scene through the lens.
technique used to measure distances to nearby objects. By observing the position of a star from two different locations in the Earth's orbit around the Sun (i.e. several months apart), it is possible to calculate the distance to the object. See the Astro 201 explanation of parallax.
An optical illusion that causes a viewed image to apparently change position as the viewer's eye moves to either side of the eyepiece.
Generally, the differences in a scene when viewed from different points (as, photographically, between the viewfinder and the taking lens of a camera). In stereo, often used to describe the small relative displacements between homologues, more correctly termed deviation.
The apparent motion of an object caused by viewing the object from different locations.
The apparent change in the position of one object, or point, with respect to another, when viewed from different angles. As applied to aerial photographs, the term refers to the apparent displacement of two points along the same vertical line when viewed from a point (the exposure station) not on the same vertical line.
In telescopic sights, the condition that exists when the crosshairs do not lie exactly on the image plane. Excessive parallax makes the shooter's eye position very critical if repeatable accuracy is to be obtained. Most lower power scope have the parallax pre-set at 150 yards; high-magnification scopes (10X and up) commonly have an adjustable objective to correct for various distances.
This refers to the difference between what you see through the viewfinder and what the camera actually records on film. Parallax happens when the viewfinder is separate from the camera lens.
Parallax, or more accurately motion parallax (Greek: Ï€Î±ÏÎ±Î»Î»Î±Î³Î® (parallagÃ©) = alteration) is the change of angular position of two stationary points relative to each other as seen by an observer, due to the motion of an observer. Simply put, it is the apparent shift of an object against a background due to a change in observer position.