Levels in Photoshop

Levels is an image adjustment that allows you to control the tonal range of an image.

It provides controls for:

• Shadows
• Midtones
• Highlights

Levels can help improve the tonal balance of an image.

• Correct a dark image
• Correct a bright image
• Improve contrast
• Adjust midtones
• Improve overall tonal range

Levels can be opened from the Image menu.

Image → Adjustments → Levels

Photoshop then displays controls for adjusting the tonal range.

The Levels dialog includes a histogram that represents the distribution of tones in an image.

Dark Tones        Midtones        Bright Tones
    ↓                 ↓                 ↓

████████████████████████████████████████
                Histogram

The histogram helps you understand where the image contains darker and lighter tones.

The black point controls the darker end of the tonal range.

Moving the black point can make the darkest tones deeper and increase contrast.

Black Point
     ↓
[■■■■□□□□□□□□□□□□□□]
Dark            Light

The white point controls the brighter end of the tonal range.

Adjusting it can make the brightest areas stronger and improve the overall tonal range.

The middle slider controls the midtones of the image.

Midtones are areas that are neither very dark nor very bright.

Black        Midtones        White
  ↓              ↓              ↓
  ●──────────────●──────────────●

Shadows represent the darker areas of an image.

Adjusting the black point can strengthen or reduce the darker tonal range.

Highlights represent the brighter areas of an image.

Adjusting the white point can help control the brighter end of the tonal range.

Midtones contain the middle range of brightness values.

Adjusting the midtone slider can make the image appear lighter or darker without simply changing the entire image equally.

Input Levels are used to adjust the tonal range of the original image.

The controls generally represent the black point, midtone and white point.

Black Point → Midtone → White Point

Output Levels control the darkest and brightest output values.

They can be used to reduce the maximum contrast range of the result.

Output Black ───────── Output White

When working with an RGB image, Levels can be applied to the composite RGB channel.

This changes the overall tonal appearance of the image.

Levels can also be used on individual color channels such as Red, Green and Blue when working with an RGB image.

Channel adjustments can change both tone and color.

Levels can help improve a photograph that appears too dark.

1. Open the Levels adjustment.
2. Check the histogram.
3. Adjust the black point carefully.
4. Adjust the midtones.
5. Check the highlights.

Levels can also be used to improve an image that is too bright.

Adjust the tonal range carefully so that important highlight details are not lost.

If an image looks flat, Levels can help increase the separation between dark and bright tones.

Flat Image
    ↓
Adjust Black Point
    +
Adjust White Point
    ↓
Stronger Tonal Range

Levels can also be used with individual color channels to correct unwanted color casts.

Make small changes and compare the result with the original image.

Levels can improve the tonal balance of portrait photographs.

Be careful not to make skin tones too dark or highlights too bright.

Product photographs can benefit from improved tonal contrast.

The goal is to make the product clear while preserving its important details and colors.

Instead of applying Levels directly to image pixels, you can create a Levels Adjustment Layer.

Image Layer
     ↓
Levels Adjustment Layer
     ↓
Edited Result

This provides a more flexible editing workflow.

• Settings can be changed later.
• The adjustment can be hidden.
• The adjustment can be combined with a layer mask.
• The original image layer remains easier to preserve.
• The effect can be refined during the project.

A layer mask can limit the Levels adjustment to selected areas.

Levels Adjustment
       +
   Layer Mask
       ↓
Selected Area

This is useful when only a particular part of an image needs tonal correction.

Suppose a photograph contains dark shadows and weak contrast.

1. Create a Levels Adjustment Layer.
2. Review the histogram.
3. Adjust the black point carefully.
4. Adjust the midtones.
5. Check the white point.
6. Compare the result with the original.

• Moving the sliders too aggressively
• Making shadows completely black
• Making highlights completely white
• Ignoring the histogram
• Over-correcting colors
• Making skin tones unnatural
• Forgetting to compare with the original
• Using Levels when a smaller adjustment is enough

Practice Levels with a sample photograph:

1. Open a photograph.
2. Create a duplicate layer or Adjustment Layer.
3. Open Levels.
4. Study the histogram.
5. Move the black point slightly.
6. Adjust the midtones.
7. Adjust the white point carefully.
8. Compare the result with the original.
9. Try Levels on another photograph.
10. Save your best result.

Create a simple photo advertisement and improve the photograph using Levels.

┌──────────────────────────────┐
│       SOOPRO PATHSHALA       │
│                              │
│       [ PHOTO ]              │
│                              │
│        ADCA COURSE           │
│                              │
│          JOIN NOW            │
└──────────────────────────────┘

Use Levels to improve the tonal balance of the photograph before placing text over it.

1. Open the image.
2. Keep the original image safe.
3. Create a Levels Adjustment Layer.
4. Check the histogram.
5. Adjust the black point.
6. Adjust the midtones.
7. Adjust the white point.
8. Check colors and details.
9. Compare with the original.
10. Save the Photoshop project.

Levels is a powerful adjustment for controlling the tonal range of an image. It provides separate control over shadows, midtones and highlights.

The histogram helps you understand the distribution of tones, while the black point, midtone and white point controls help you make precise corrections.

Using Levels as an Adjustment Layer provides a flexible and non-destructive editing workflow.