Shares of OmniVision Technologies have been hit hard, falling 49% over the past year. While the stock market correction contributed to the stock’s slide, OmniVision has lots of its own problems as well.

I was once a fan of OmniVision Technologies (nasdaq: OVTI - news - people ), adding shares of the company to the Forbes Wireless Stock Watch Core Wireless Portfolio in 2005. Fortunately, I got out before the stock’s most recent fall. Back in 2005, OmniVision, which designs image sensors–silicon semiconductors that turn photons into electrons so that they can be processed, stored or displayed–made about 75% of revenues from selling its camera chips to developers of mobile phones. The company also made its chips available in a variety of other electronics, such as security cameras, Sony (nyse: SNE - news - people ) PlayStation games and automobiles–to provide a rear image of what’s behind the car (useful when moving in reverse).

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