Foveon made a splash years ago with a camera sensor capable of recording all three additive colors at each pixel—as opposed to every other camera, which records only red, green or blue at each pixel and then uses software to decide what the other two colors should have been. However, since the original product lineup, Foveon has languished with sensors that haven't kept pace with the super-high-speed megapixel wars.

At a certain point it became almost moot as to whether recording RGB at each pixel on an essentially 6MP sensor is better than recording RGB across 24MP. Foveon, which has found a home inside Sigma camera bodies—claims their sensors are 14MP. However, that is inaccurate because it's a combined count of each color's resolution. In other words, the camera is really resolving less than 6MP a color.

In any case, Sigma has just released a new camera almost as boring as the last camera and nearly identical. The new SD15 replaces the SD14 with a body that has a larger LCD sensor and faster speed.

This ordinarily isn't enough to write about, but it's worth a mention so that you're not confused by the marketing hype around the size of the sensor. It's a nice idea, but it's not really the best consumer choice out there today.