Adobe Photoshop is best and most widely used image editor by professionals as well as by amateur. But photoshop is not easy to understand and requires and lot of practice and patience to master. There are many features of photoshop which beginners find very difficult to understand such as Hue/saturation,layers, layer masks, levels, curves etc.
In this post, I'll be talking about Hue, saturation and brightness.
Hue, saturation and brightness are aspects of colour in the RGB scheme. All possible colours can be specified according to hue, saturation and brightness, just as colours can be represented in terms of R,G, and B components.
HUE
Most sources of visible light contain energy over a band of wavelengths. Hue is the wavelength within the visible-light spectrum at which the energy output from a source is greatest. Changing Hue, changes colours according to colour wheel.
SATURATION
Saturation is an expression for the relative bandwidth of the visible output from a light source. Saturation is represented by the steepness of the slopes of curves. As saturation increases, colours appear more "pure". As saturation decreases, colours appear more "washed-out".
BRIGHTNESS
Brightness is a relative expression of the intensity of the energy output of the visible light source. It can be expressed as the total energy value or as the amplitude at the wavelength where the intensity is greatest.
To use the Hue/Saturation command in Photoshop:
1. Open the Hue/Saturation dialog box.
To open it, go to Image > Adjustments > Hue/saturation.
The two colour bars in the dialog box represent the colours in their order on the colour wheel. The upper colour bar shows the colour before the adjustment; the lower bar shows how the adjustment affects all of the hues at full saturation.
2. Choose the colours to be adjusted.
3. For Hue, enter a value or drag the slider until the colours appear as you desire.
The values displayed in the text box reflect the number of degrees of rotation around the colour wheel from pixel's original colour. A +ve value shows clockwise direction and -ve value shows anticlockwise direction. Values can range from -180 to +180.
4. For saturation, enter a value or drag the slider to the right or left to increase or decrease saturation.
The Colour shifts away from or towards the centre of the wheel.
Values can range from -100 to +100.
5. For lightness, enter a value or drag the slider to the right or left to increase or decrease the lightness.
Values can range from -100 to +100.
In this post, I'll be talking about Hue, saturation and brightness.
Hue, saturation and brightness are aspects of colour in the RGB scheme. All possible colours can be specified according to hue, saturation and brightness, just as colours can be represented in terms of R,G, and B components.
HUE
Most sources of visible light contain energy over a band of wavelengths. Hue is the wavelength within the visible-light spectrum at which the energy output from a source is greatest. Changing Hue, changes colours according to colour wheel.
SATURATION
Saturation is an expression for the relative bandwidth of the visible output from a light source. Saturation is represented by the steepness of the slopes of curves. As saturation increases, colours appear more "pure". As saturation decreases, colours appear more "washed-out".
BRIGHTNESS
Brightness is a relative expression of the intensity of the energy output of the visible light source. It can be expressed as the total energy value or as the amplitude at the wavelength where the intensity is greatest.
To use the Hue/Saturation command in Photoshop:
1. Open the Hue/Saturation dialog box.
To open it, go to Image > Adjustments > Hue/saturation.
The two colour bars in the dialog box represent the colours in their order on the colour wheel. The upper colour bar shows the colour before the adjustment; the lower bar shows how the adjustment affects all of the hues at full saturation.
2. Choose the colours to be adjusted.
- Choose Master to adjust all colours at once.
- Choose one of the other preset colour ranges listed for the colour you want to adjust. An adjustment slider appears between the colour bars, which you can use to edit any range of hues.
3. For Hue, enter a value or drag the slider until the colours appear as you desire.
The values displayed in the text box reflect the number of degrees of rotation around the colour wheel from pixel's original colour. A +ve value shows clockwise direction and -ve value shows anticlockwise direction. Values can range from -180 to +180.
4. For saturation, enter a value or drag the slider to the right or left to increase or decrease saturation.
The Colour shifts away from or towards the centre of the wheel.
Values can range from -100 to +100.
5. For lightness, enter a value or drag the slider to the right or left to increase or decrease the lightness.
Values can range from -100 to +100.
Post a Comment