Make an image cooler, meaning make the overall cast of an image, a bluish color. This can be used to make images look more cutting edge, or even making them look more cold.
Photoshop Version: CS2
First you would open the image you would like to adjust. Here we open an image of a Lexus car.
Next, go to [Image -> Adjustments -> Photo Filter]. This will open the Photo Filter window.
Set the settings as shown here, you can test with different shades of blue or cyan. Here we used a cyanish blue. The density here is set pretty high. Density determines how much the color is applied. If you keep “preview” checked you will be able to see the outcome of the image. Notice the image has a cooler look.
The photo filter can be used in many ways and is a great image adjuster. I use it a lot to give photos the right feeling. You can use any color you want, it depends on what feel you want the photo to have. For example, if you are doing a design that is orangish and you put a photo into it, but the photo sticks out too much, you can apply an orangish photo filter to bring it into better color harmony.
The good thing about the photo filter is that it keeps the rest of the photo details in tact and keeps the rest of the colors there. Before they had this adjustment I would try to use Hue/Saturation, which would ruin the image details and it wouldn’t give a general cast, it would just apply a color over the whole image. The photo filter is good, because it only changes the colors for certain parts of the photo, but keeps the general color composition the same for the rest of the photo.