The present teachings are directed toward electrocatalyst compositions of alloys of platinum, tungsten and nickel for use in fuel cells. An optical element is positioned to reflect a different view of the electronic part into the camera, and the camera thus provides an image of the electronic part having differing views of the electronic part. The system may identify corresponding features in the first and second camera images. The result is relatively free of EMI noise, and is used as an error signal for an adaptation circuit that in turn identifies the fundamental frequency \u03c91.