Adjustment Layers are a type of layer that adds additional filters to an image. However, the difference is that the layer affects all layer underneath it only which allows you to a specific adjustment to parts of an image if needed. Such as if you want to change the hue of two parts of an image.
Adjustment layers work better with non-destructive editing as adjustments aren’t necessarily used to edit an image. This will make the adjustment layer not forcibly noticeable and seem more natural on the non-destructive edit, rather than the destructive edit. Also, it takes less time to adjust the adjustment layer to its desired state and non-destructive editing is much softer with its changes.
The picture above is of a rainforest scene which I’ll use the adjustment layers to make it more saturated by 50%. The yellows of the image should stand out more in the image. In other words, the image will look more lively and bright.
The picture below is another adjustment on the exposure of the image. This makes the image look like it takes place at a later time than the original or just simply darker toned than the original image. Using -2.80 exposure and 0.78 gamma correction.
Hollie Hurwood's Game Design course work 