Blown Highlights

Since we've all moved outdoors I've been noticing a problem with blown highlights. White uniforms in bright sun can pose a problem, especially if you're shooting in aperature priority mode and using +ev comp to compensate for the shadows. A very useful exposure tool is the blinking highlights feature. Always have this feature enabled in your lcd. That way if huge chunks of your image are blinking, you'll know that you need to adjust your exposure. When you blow the highlights, or overexpose, there is no information recorded in that area of the image, so trying to fix it in photoshop is not an option. I found a few interesting sites that talk about blinking highlights and metering:

http://www.ximinasphotography.com/lessons/lesson04/lighting_4.html
http://www.naturescapes.net/092004/gd0904.htm