thinking outside the box
Photo Editing Guide Part 3 - The Enhance Options
XARA TUTORIAL
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Color Saturation

This controls the intensity of the colors. At the minimum -100 value this removes all color and is a simple way of making black and white images. Most digital images are well saturated, so it’s very unusual to have to turn this control up, i.e. to add to the color saturation. How- ever, some cheaper digital cameras tend to over-saturate colors. In this example the sky is unrealistically over-saturated, it’s too blue. So here we use the color-select tool feature to reduce the saturation of the sky blue color only, so the sand and sea are not affected.

Temperature

You might think it unusual to describe the temperature of a photo, but the light all around you has a temperature (and is generally created by objects such as the sun or an incandescent light that are very hot things). In fact, you can measure the temperature of hot objects by measur- ing their color. We tend to associate ‘warm images’ with being more red-orange, and cooler images being more blue - that’s what this control adjusts.

Photo Hue

The Hue control changes the colors in your image. A strength control can adjust this from a very subtle tint towards a certain color, to a complete re-coloring where all colors are changed to be the desired color. Combine this with the color-select feature, and you can change the color of only certain colors in your photo, or part of your photo. Instead of the usual slider the Photo Hue control shows a pop-up with Hue and Strength sliders. This example uses the Color Select Tool to select the orange, and then the Hue Control to adjust only the color (I guess you can’t call this an orange any more.) Note that even the subtle reflection on the table has changed color. This whole process takes less than 30 seconds. Advanced note: Other programs sometimes include a ‘Hue shift’ facility. But typically these shift the hue of all colors in the image, which in our opinion is not useful in many, if any, cases. Instead, our version of Hue control moves all the colors towards a single defined hue, as the above examples show.
Original image Temperature -36 Temperature +50 Starting with the saturation-fixed image from above. The overall colors are balanced for a bright mid-day photo. Making an image such as this more cool, doesn’t really work. Increasing the temperature control adds warmth to the image, making it look more like a sunset image, with a more dusky sky and clouds and a more orange sand. Original image Moving to orange Turning blue The original image has a range of different colors. With the Strength slider at zero, no coloring effect happens. The Hue slider is over a orange color, and the Strength slider moved to 50% so the colors in the image have moved towards orange. The higher the Strength value the more orange the colors will become. A light blue Hue value, and high Strength value has moved all colors toward blue. There is still some slight hue variation because the Strength is not 100%.