Operation Manual

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Processing and developing photos
Last updated 11/30/2015
Contrast Controls luminance contrast. Useful for very noisy photos. Higher values preserve contrast but may
produce noisy blotches or mottling. Lower values produce smoother results but may also have less contrast.
Color Reduces color noise.
Detail Controls the color noise threshold. Higher values protect thin, detailed color edges but may result in color
speckling. Lower values remove color speckles but may result in color bleeding.
To turn off noise reduction, set the Sharpening Amount slider to zero or click the Detail panel On/Off icon .
Video tutorial: Remove image noise in Lightroom
Learn how to quickly remove image noise, even in the most extreme situations.
Correct lens distortion and adjust perspective
About lens distortion
Camera lenses can exhibit different types of defects at certain focal lengths, f-stops, and focus distances. You can correct
for these apparent lens distortions using the Lens Corrections panel of the Develop module.
Vignetting causes the edges of an image, especially the corners, to be darker than the center. It is particularly noticeable
when the photo contains a subject that is supposed to be an even shade or tone, such as the sky in a landscape image.
Barrel distortion causes straight lines to appear to bow outward.
Pincushion distortion causes straight lines to appear to bend inward.
Chromatic aberration Chromatic aberration appears as a color fringe along the edges of objects. It is caused by the
failure of the lens to focus different colors to the same spot, aberrations in sensor microlenses, and by flare. Lightroom
provides a checkbox to automatically correct blue-yellow and red-green fringes, also known as lateral chromatic
aberration.
Lightroom 4.1 and later provides slider controls to correct purple/magenta and green aberration (axial chromatic
aberration). Axial chromatic aberration often occurs in images made with large apertures.
Correct image perspective and lens flaws automatically