Dave JohnsonPCWorld

Dave Johnson is a writer and photographer who has covered technology for magazines such as PCWorld and Wired. He is currently the Editorial Director for eHow.com's Tech channel. Dave is the author of How to Do Everything with Your Digital Camera, and over a dozen other books.

5 Accessories to Take With You (and Your Camera) on Vacation

Whether you have a compact point-and-shoot or a digital SLR, here's the gear you need to pack to use your camera safely and intelligently on a trip.

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Play With an Online Simulator to Learn Camera Settings

The CameraSim photo simulation site teaches you how ISO, shutter, aperture, and other settings affect your photos.

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Reader Questions on Thumbtack, Background Blur, and More

Dave answers questions about blurring backgrounds, pruning large photo collections, printing Digital Focus articles, and more.

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6 Tips for Exciting Fireworks Photos

You can find all sorts of complicated advice for taking good pictures of fireworks--but these six simple tips tell you everything you need to know.

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Taking a Great Facebook Profile Picture

Here are five tips for putting your best face forward on social networking sites.

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Taking Good Handheld Photos at Night

New cameras from Canon and Sony have low-light photo modes, but here's how to get a similar effect with the camera you already own.

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Five Simple Tips for Better Fireworks Photos

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There's all sorts of complicated advice for taking pictures of fireworks--but here's everything you need to know boiled down into five tips.

Five Easy Ways to Add Special Effects to Your Digital Photos

It once took a darkroom to do the stuff you can now do on your PC or right in your camera--thanks to some simple image-editing tricks and creative scene modes, you can turn full-size objects into miniatures, compose panoramas, and more.

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Photo Gifts for Dads and Grads

Fathers' Day is almost here, and high school and college graduations are around the corner--so put a smile on loved ones' faces with these cool photography gadgets.

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Taking Night Photos, Understanding Focal Lengths, and More

Dave answers reader questions on night photography, flash reflectors, focal lengths, photo anomalies, and cropping in this month's FAQ.

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Five Reasons Photographers Should Love the Apple iPhone

These free (or cheap) photo-friendly apps should be on every photographer's iPhone.

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6 Handy Tips for Getting Around Photoshop Elements

Remember these keyboard shortcuts to streamline your photo editing with Adobe's image editor.

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Improve the Exposure of Your Photos With Just a Few Clicks

Use your image editor's Levels tool to bring mediocre photos to life.

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5 Tips for Shooting Dramatic Silhouettes

Apply these rules to capture dark silhouettes against bright backgrounds in your digital photos.

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Artistic Digital Photo Effects: Zoom Blur, Orton Effect

Learn how to use blur selectively--in the lens and in your image editor--and how to apply the Orton Effect to your digital photos.

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