In a recent set of pictures I took during a hike I found that there was an unpleasing color cast in all of them. I find myself increasingly shooting in JPEG not only for the ability to store more images, but also because I do not have the time to manually process a bunch of RAW images. If I can get very pleasing results straight out of the camera, so much the better. Now there are times when the added post-processing potential of RAW is needed, but we should still be able to get great results without it. After browsing through DP Review's forums, I found that the D200's Auto White Balance should not be trusted. The color cast in my hiking photos was most likely due to this. Instead of blindly using the preset Sunny, Cloudy, Shade, Fluorescent, and Tungsten modes, I decided to see what a custom white balance with a neutral gray card could do. Here are my quick test results. Custom White Balance shots are in the middle of each sequence so they can be easily compared to their neighbors. First, my room lit by indirect sunlight. Auto White Balance: Custom White Balance with Neutral Gray Card: Preset Shade: Next, I tested fluorescent light. Auto White Balance: Custom White Balance with Neutral Gray Card: Preset Fluorescent: Finally, I checked tungsten light. Auto White Balance: Custom White Balance with Neutral Gray Card: Present Tungsten: Conclusion: Custom White Balance with a Neutral Gray Card makes a huge difference. I'm going to be using this as much as possible.