Embodiments of the invention relate generally to creating semiconductor junctions with reduced contact resistance. A lens of the digital camera system receives light from a scene, and a conversion device defines a first set of digital data based on this light. and an absolute pressure of from 5 to 50 bar with a hydrogendiene molar ratio of at least around 1, and catalytically cracking the olefins in the presence of a crystalline silicate catalyst at an inlet temperature of from 500 to 600\xb0 C.