A process for producing high pressure tubing from austenitic stainless steels. A transformation manager in the electronic camera device may be configured to convert the primary image data into secondary image data by utilizing selectable transformation parameters that are optimized by utilizing an optimization metric to thereby minimize noise characteristics in the secondary image data. The apparatus includes a sleeve configured for variably closing the outlets so as to vary the proportion of the air exhausted, relative to that directed back to the compressor.