Digital Photography and Imaging - Week 4

 Week 4

Photoshop 3

Adjustment Layer & Filters

L4.1

Adjustment layers in Photoshop are a super useful set of non-destructive image editing tools that can add color and tone adjustments to an image without permanently changing its pixels.

L4.2

When you add an adjustment layer to an image, a new layer will appear on the image, and a properties panel specific to the type of adjustment you have selected will pop up.  The Properties panel will allow you to modify adjustment layers, which in turn will modify your image.

1. BRIGHTNESS / CONTRAST

Brightness/Contrast adjusts the tonal range of the image.

 The Brightness slider adjusts the highlights in the image, and the Contrast slider adjusts the shadows in the image.

2. LEVEL

Level modifies the tonal values ​​in the image by

 Adjust the levels of shadows, midtones, and highlights.

 It's one of the most used tools in the Adjustment Layers panel and can go a long way in correcting your image with just a little bit of leveling.

3. CURVES

Curves allow you to adjust as many points as you want across the tonal range of the entire image, and are the most powerful and precise tool for editing tones in an image.

4. EXPOSURE

Exposure allows you to adjust the exposure level through three

 Sliders: Exposure, Offset and Gamma.

 Exposure will adjust only the highlights of the image, Offset will adjust the midtones, and Gamma will adjust only the dark tones.

5. SELECTIVE COLOR

A Selective Color adjustment layer selectively modifies the number of primary colors without modifying the other primary colors in the image. 

Filters

L4.3

Editing photos with filters is an essential part of Adobe's graphics editor.

 There are filters to change colors, add blur or create completely new image effects.  Photoshop offers almost limitless filters for this.