Adjustment Layers

In Photoshop, there are different types of layers. The basic example is an image but another is an adjustment layer. This works much like a normal layer except that it applies an effect to all the layers below such as Levels and Hue/Saturation. Masks can then be used with these layers to highlight certain areas to apply the effect.

wine-bottle
Original Image

Firstly, we created a new adjustment layer for the layerslevels of the image so that the text on the bottle was easier to read. Then we used a layer mask so that only the wine bottle was affected. Next, we created a Hue/Saturation layer to over-saturate the image. Finally, we created another Hue/Saturation layer with a mask so that everything but the bottle was almost completely desaturated.

 

 

 

wine_bottle_final
Enhanced Wine Bottle
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Destructive and Non-Destructive Editing

cityscape-22
Original Image

To help us understand the difference between destructive and non-destructive editing, we did the task twice, once destructively and once non-destructively.

Destructive editing

layersFirst of all, we used the magic wand selection tool to select the sky area and then erased it by pressing Ctrl + Backspace. Then we created a new layer and added a gradient to it.

selection-error
Example of bad selection

 

 

 

Destructive editing is bad because you are erasing the pixels and once they are gone they cannot be restored. Also, with the skyline, once you have destroyed the sky it is difficult to refine it if there is an area where the selection is wrong.

cityscape
Destructive Cityscape

Non-Destructive Editing

layersFirst of all, we applied a mask to our original image.
A mask is black and white information which tells photoshop what parts to hide in a layer – keeping the pixel information rather than deleting it as with Destructive editing. We then used the Refine Edge tool to perfect the edges of the mask to make sure there was no colour bleeding from the sky. Finally, we added the gradient to a lower layer.

cityscape-final-render
Non-Destructive Cityscape