Tag Archive for 'Lens Correction filter'

Lens Correction in Photoshop

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Photoshop’s Lens Correction filter has controls for fixing many common lens aberrations, including distortion, chromatic aberration and vignetting.

Vignetting

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Vignetting (also called corner shading) is where the lens doesn’t produce the same brightness at the edges of the frame as it does in the middle. It can also happen when the lens’s image circle is just a little too small [...]

Shift (perspective control) lens

Shift-lens

A shift lens is used to correct distortion in architectural photographs and sometimes to manage depth of field in studio shots. The lens can be moved upwards, downwards and side to side relative to the camera body. This is used [...]

Pincushion distortion

Pincushion distortion is where the edges of the photo bow inwards and it’s often seen with zoom lenses at their longest focal lengths. The centre of the image appears to be ‘sucked in’ slightly – lines towards the edges of [...]

Perspective correction

Fixing converging verticals in buildings, for example. This can be achieved by using a special perspective correction (PC) lens or by using software. There are two ways to correct converging verticals or other perspective faults in Photoshop. You can use the [...]

Distortion

distortion

Distortion is where straight lines become curves or appear to converge, and it comes in two types: perspective distortion and lens distortion. Perspective distortion is natural and inevitable. It’s when the tops of tall buildings appear to converge or railway lines [...]

Chromatic aberration

chromatic-aberration

This is a lens defect that produces colour fringes around bright objects near the edges of the frame. Chromatic aberration is largely unavoidable in zoom lenses, though the best lenses do keep it well suppressed. It’s a result of the [...]

Barrel distortion

Barrel distortion is a ‘bowing’ effect seen in wideangle shots, where the centre of the image appears to bulge outwards. Barrel distortion is most noticeable towards the image edges, where horizons and the edges of buildings can appear bowed. It’s [...]