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A million factors can affect the intensity of the colors that you see in your photos.

Well, perhaps not a million. But if you're shooting outdoors, the look of your photos can certainly be affected by such diverse factors as the time of day that you shoot, the weather, the presence or absence of cloud cover, and whether you use a flash. In the old days, it was even worse, since even the particular kind of film you used could affect the colors in the photo. Fuji's famous Velvia film was well-known for its highly saturated colors, for instance, and I used it often for an extra punch in my landscape photography.

These days, it's a snap to use your photo editing software to tweak the intensity of the colors in your digital images. I'll show you how to do it with Adobe Photoshop Elements, but the process is nearly identical no matter what software you use.

Saturation Explained

Suppose you have a photo like this one. It's not bad, but it lacks a certain oomph.

There are a few ways to add life to a washed-out picture. You can use the Levels control to stretch out the histogram, for example. (For tips on using Levels, check out "Perfect Photos Every Time.") But let's say you've already done that, or perhaps you're just looking for a fast way to make a quick improvement. If that's the case, then you might want to try increasing the saturation.

The Saturation control allows you to increase or decrease the intensity of colors in an image, much like the saturation control on your television. Too much saturation can punch up the colors so much that it'll make your eyes bleed. But using the control in moderation can enhance an otherwise bland picture.

Bump Up the Colors

Let's give this a shot. In Photoshop Elements, access the Saturation control by selecting Enhance, Adjust Color, Hue/Saturation.

Feel free to experiment with the Saturation tool--it's fun. Note that the Saturation control is the middle slider, sharing the dialog box with Hue and Lightness. Dragging the saturation slider to the left or right increases or decreases intensity in the colors throughout your photo.

Move the Saturation slider to the right a little--such as +20--and observe the results. That is often all you need to add some punch to your photo. Click the thumbnail above to see what my photo looks like now that I've pumped up the saturation.

Go to Extremes

Now drag the slider all the way to the right. You can see in my sample image that maximizing the saturation slider makes the colors turn radioactive. That's fine for a special effect, perhaps, but probably not something you can use for practical photo editing.

Sending the slider to the left is a lot more useful. You can bleach all the color from your picture and turn it into a black-and-white by reducing the saturation to 0. Or try one of my favorite effects: reduce the saturation to a low level, so the image is almost monochromatic, but still has some hint of color.

The resulting photo, linked above, could be a scene from a misty morning, or near dusk.

Hot Pic of the Week

Get published, get famous! Each week, we select our favorite reader-submitted photo based on creativity, originality, and technique. Every month, the best of the weekly winners gets a prize valued at between $15 and $50.

Here's how to enter: Send us your photograph in JPEG format, at a resolution no higher than 640 by 480 pixels. Entries at higher resolutions will be immediately disqualified. If necessary, use an image editing program to reduce the file size of your image before e-mailing it to us. Include the title of your photo along with a short description and how you photographed it. Don't forget to send your name, e-mail address, and postal address. Before entering, please read the full description of the contest rules and regulations.

This week's Hot Pic: "Brooklyn Bridge," by Paul Corcoran, New York

Paul used a Nikon D300 to capture this engaging photo of the Brooklyn Bridge. He writes: "The clouds are the main reason I took the photo. They almost look like they were painted onto the background, making the bridge look 3D."

This Week's Runner-Up: "Maine Fog," by Brad Smith, Secaucus, New Jersey

Brad writes: "'Maine Fog' is a three-frame high-dynamic range composite shot that I captured in the fog, before just before sunrise, in Rockland Harbor Maine. Shooting multiframe bracketed images in low-light conditions can yield some interesting results, but it can be quite tricky when you have boats moving around in the water. There was such a lack of color that I decided to transform the image into black and white."

See all the Hot Pic of the Week photos online.

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