A system for controlling a motor may include a motor driver circuit for driving a camera motor. The present invention provides a method and apparatus incorporating a spinning, oscillating or stepping optical interference filter to change the angle at which light passes through the filters after passing through a sample under analysis downhole. The video processing module has a connector for coupling the interchangeable connector module. A one-part blank is provided for the manufacture of a container of this nature. In some embodiments this metadata is used to select between files and different versions of files when provisioning an application specific runtime environment. 5 or more and an average long axis length of 15 \u03bcm or less is preferred.