Details

To sharpen an image, we select the “Details” pane.
In the “Details” panel, we have two categories.
The category “Sharpening” (1) and the category “Noise Reduction” (2).
Let me first begin to sharpen an image.
When you see a picture sharpens it is best in a 1:1 ratio.That is in the original size. To view a photo in 1:1 ratio, click in the picture.
In the “Sharpening”, we have four options.

1. Amount
   It adjusts the sharpness of their edges. Increase your value, increases the sharpening. A value of zero (0) to disable the sharpening.
   Personally, I think, you should start with a high value and work to reduce it further.
2. Radius
   It adjusts the size of the details to which sharpening is applied. For photos with very fine details, you need a lower radius setting.
3. Detail
   Lets you determine how frequently the image is sharpened and the extent of sharpening of the edges. At lower settings, it primarily sharpens the edges to remove blurring.
4. Masking
   Lets you control an edge mask. When zero (0) is selected, all aspects of the image are equally sharpened. A setting of 100, sharpening is mostly restricted to the areas near the strongest edges.

Tip.
Hold down the Alt key on your keyboard pressed while dragging a slider lever to see which areas will be sharpened (white areas) and which areas will be masked (black areas).

1. So you get a black / white representation of the image when drag the handle “Amount”. And this is interesting because Lightroom still determines the sharpening on grayscale and not on the colors.
2. By dragging the lever “Radius”, you will see a little depth effect at the edges.
3. By dragging the handle “Detail”, you get to see a suppressed display of dragging the “Radius” lever. You use this handle to make the edges sharp and less for adjusting the softer parts of the picture.
4. And by dragging the handle “Masking”, you get a picture with the edges in the picture. The higher the value for this handle, the less sharp the softer parts of the picture. Thus more detail for the edges, less for the softer parts. The white parts in this view will show you the parts to which this operation is performed, the black areas to which this operation is not performed.

Click the “Enable / Disable” button to view the photo with or without sharpening.

The second category we find under the “Development” module is “Noise Reduction”.
Image noise is extraneous visible artifacts that decrease the quality of the image.
Yet noise in your picture is not always bad, because removing excessive noise can reduce the very depth of your photo.
So you need to somewhere set a condition of what noise can be and what noise can not reduced while sharpening the photograph.

In the category of noise we have five options:

1. Luminance
   Lets you reduce the luminance noise.
2. Detail
   This is useful for images that are very noisy. Sets the threshold for luminance detail. Higher values give more details, lower values indicate results with less noise, but also remove details.
3. Contrast
   This sets the luminance contrast. Useful for photographs with lots of noise. Higher values retain the contrast, but can stain with noise. Lower values give results with less noise, but with less contrast.
4. Color
   Lets you reduce the color noise.
5. Detail
   This sets the color noise threshold. Higher values, we get thin, detailed and colored edges again. Lower values remove color speckles, but this can cause the color flow.

Lens Corrections

In the Lens Corrections panel of the Develop module, you can correct distortions in camera optics.
Select “Manual” Lens Corrections pane.
A word of explanation about the options available:

Transformation Category:

• Distortion
  We use this to correct distortion and straighten lines that bend away from the center.
• Vertical
  Lets you correct the perspective that is caused when the camera is held at an angle up or down.
• Horizontal
  Lets you correct the perspective that is caused when the camera is held at angle left or right.
• Rotate
  Lets you adjust for the camera held at an angle. Uses the center of the cropped image as a non-rotation axis.
• Scale
  It adjusts the image to scale up or down. It can also remove blank areas that are the result of perspective correction and distortion. And this gives you the areas of the image beyond the cut off limit.
• Constrain Crop
  Lets you limit the cutting to the image area, not allowing gray edge pixels to be included in the photo.

Category “Lens Vignetting’:

• Amount
  Drag the slider “Amount” to the right to make the corners of the photo lighter.
  Drag it to the left, edge of the image becomes darker.
• Midpoint
  Drag the slider “Midpoint” to the left to apply the amount of adjustment to a larger area outside the corners.
  Drag the slider to the right for applying the adjustments to a smaller area close to the corners.

Category “Chromatic Abberation”:

• Red / cyan
  Changes the size of the red channel relative to the green channel and thus the red / cyan color fringing.
• Blue / yellow
  Changes the size of the blue channel relative to the green channel and thus the blue / yellow color fringing. If you want to correct color fringing better, hold down the Alt key when dragging the slider.
• Defringe
  Selects “All Edges” to correct the color fringing for all edges, including any sharp change in color values.

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