PHOTOSHOP LIGHTROOM
User Guide
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To turn off noise reduction, set the Amount slider to zero or click the Detail panel On/Off icon
.
Sharpen a photo
You sharpen photos at two stages in Lightroom workflow: as you view and work on photos, and when you print
them. Sharpening is part of the camera default that Lightroom automatically applies to your photos.
When Lightroom exports a photo or sends a photo for editing in Photoshop, the sharpen setting for the image is
applied to the rendered file.
1
Zoom in the preview image to at least 100%.
2
In the Detail panel of the Develop module, do any of the following:
Amount
Adjusts edge definition. Increase the Amount value to increase sharpening. A value of zero (0) turns off
sharpening. In general, set Amount to a lower value for cleaner images. The adjustment locates pixels that differ from
surrounding pixels based on the threshold you specify and increases the pixels’ contrast by the amount you specify.
Radius
Adjusts the size of the details that sharpening is applied to. Photos with very fine details may need a lower
radius setting. Photos with larger details may be able to use a larger radius. Using too large a radius generally results
in unnatural-looking results.
Detail
Adjusts how much high-frequency information is sharpened in the image and how much the sharpening
process emphasizes edges. Lower settings primarily sharpen edges to remove blurring. Higher values are useful for
making the textures in the image more pronounced.
Masking
Controls an edge mask. With a setting of zero (0), everything in the image receives the same amount of
sharpening. With a setting of 100, sharpening is mostly restricted to those areas near the strongest edges.
Press Alt (Windows) or Option (Mac OS) while dragging a slider to see the areas to be affected (white) versus the
areas masked out (black)
To turn off sharpening, set the Amount slider to zero (0) or click the Detail panel On/Off icon
.
For a video tutorial on sharpening photos in Lightroom, see
www.adobe.com/go/learn_lr_video_sharp
.
See also
“Sharpen a photo for print” on page 118
Compensate for chromatic lens aberration
Chromatic aberration
is a common defect caused by the failure of the lens to focus different colors to the same spot.
In one type of chromatic aberration, the image from each color of light is in focus, but each image is a slightly
different size. This type of aberration is seen as a complementary color fringing in areas away from the center of the
image. For example, you may see a red fringe on the side of an object toward the center of the photo, and a cyan fringe
on the side of the object away from the center of the photo.
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