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Barrel distortion

Photography BarrelBaryta

Barrel Distortion
By Vincent Bockaert
Barrel distortion is a lens effect which causes images to be spherised or "inflated". Barrel distortion is associated with wide angle lenses and typically occurs at the wide end of a zoom lens.

 


Barrel distortion
A lens aberration that causes straight lines at the edges to bow outwards giving a barrel-like form
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Barrel distortion
Techniques Glossary Barrel distortion
A lens aberration that causes straight edges to bow outwards, giving a barrel-like appearance.

Barrel Distortion
Image distortion produced when the position of the camera lens is at its widest angle. Lines you expect to appear perpendicular are not.

Barrel distortion:
One of the common lens aberrations, where straight lines at the edge of the field are caused to bend into the shape of a barrel.

Barrel distortion, which gives the appearance that buildings lean inward, was caused by use of widest end of zoom lens. Zooming in will minimize or eliminate the effect.
Can be fixed with image editing software.

barrel distortion noun
a type of image distortion in a rectilinear projection where scale increases with increasing distance from the center of the image.

Barrel Distortion
Straight lines are bowed in at the edges of the picture frame re sembling the sides of a barrel; pres ent in small amounts in some wideangle or wideangle-zoom lenses, bu~ uncorrected in fisheye lenses.
Balance ...

Barrel distortion at 38mm is 0.57%
Distortion at 380mm is 0.00%
Chromatic aberration
Moderate to high chromatic aberration.

Barrel distortion:
A lens aberration where parallel lines at the edge of the image area appear to bow outwards.
Bokeh: ...

Barrel Distortion
Lens distortion causing straight lines to "barrel" out; the opposite effect is Pincushion Distortion. Fairly common to some extent in cheaper lenses (and some expensive ones).
Bit ...

BARREL DISTORTION - Image distortion caused by a lens, where the edge bows outwards like a fisheye or wide-angle lens's image.

Barrel distortion
Lens aberration (distortion) where straight lines are formed as curved lines in the image. These barrel shaped lines are most noticeable along the edges of the photo.
(see Aberration & Pincushion effect ) ...

Barrel distortion.
A common form of lens flaw or aberration - curvilinear distortion - in which parallel lines towards the edge of the image area appear to bow outwards, like the shape of a traditional wooden barrel. Also known as negative distortion.

Barrel Distortion. A common geometric lens distortion causing an aquired image to pucker towards the centre and be rounded along the outer edges.

barrel distortion
image effect that spreads the center dimensions of the picture.

Barrel Distortion
When straight lines bow out towards the edge of the frame (like the profile of a barrel) it is known as barrel distortion. This is typically found to some extent at the wide end of many zoom lenses.
[edit] ...

Barrel distortion
A lens aberration or defect that causes straight lines to bow outward away from the center of the image.

There are two types of distortion--barrel distortion and pincushion distortion. Distortion cannot be improved by stopping down the lens.

For example, a greater degree of barrel distortion is tolerated in lenses that span the focal length range from wide angle to telephoto with a focal ratio of 10x or more than would be acceptable in a fixed focal length lens or a zoom lens with a ...

Barrel distortion: Distortion of the image where straight lines in the subject are formed as curved lines. It is most noticeable along the edges of the frame.
Bellows: Light-tight folding sleeve in view cameras that connects the lens to the body.

One unintended distortion that's pretty common today is barrel distortion where straight lines away from the center of the photo bow outward (less common is pincushion distortion where the lines bow inward).

If the zoom lens of your digicam suffers from barrel distortion at the wide end of the zoom, chances are pincushion distortion will be present at the tele setting.

Side by side, the 12-24 on a DX digital body was sharper and had less barrel distortion zoomed all the way out than did the 17-35 on a film body and a comparable focal length. And it was a heck of a lot smaller and lighter weight.

The common characteristic of a zoom lens is that is shows barrel distortions at the wide end of its zoom range and pincushion distortions at the long end. Somewhere in between there's usually a small range that is free of distortions.

An ultra-wide angle lens which purposely introduces barrel distortion so straight lines near the edges of the frame appear to curve out.
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The main advantage of the Canon lens has less barrel distortion at the short focal lengths. (It is also a slight bit faster.) That distortion could be annoying if you do a lot of architectural photos.

Wide-angle lenses can distort objects near the edge of the frame. This is called "barrel distortion."
Long lenses make the sun and moon look much larger.
Digital SLR cameras use electrical connections to set the lens aperture and adjust focus.

-Curvilinear distortion - combination of barrel distortion and pincushion distortion.
-Curvature of field - lens aberration causing a curved plane of focus.

The Lens Correction filter is the best choice if additional corrections need to be made to the image (i.e., barrel distortion, pincushion distortion, vignetting, perspective, or chromatic aberration)
Reminders and General Considerations ...

A wide angle lens with significant barrel distortion can therefore achieve a better MTF since objects at the periphery are stretched much less than they would be otherwise.

I have observed a moderate amount of barrel distortion and fairly serious vignetting at 24mm, f2.8. It would have been a problem on film.

See also: Barrel, Camera, Image, Lens, Distortion