The Hue/Saturation dialog works in a subtly different way. The Hue slider shifts all the colours along the colour spectrum. This can solve some colour problems, but the effects can be unpredictable and hard to control. At the same time, you have a Saturation slider for increasing the strength of all the colours in the image. Our original image was shot on an overcast day and has distorted and fl at-looking colours. We can try to boost the colours by increasing the Saturation level, but this also exaggerates the unwelcome red/purple cast in the brickwork beneath the ivy leaves. The solution is to adjust the colours independently. First choose the nearest colour from the pop-up in the Hue/Saturation ‘Edit’ menu.

Then use the eyedropper to click on the part of the image you want to alter. Your hue and saturation changes will be applied to this range of colours only. Our fi nal shot features ‘reddened’ brickwork and greener leaves.