> The finished preforms are packed in vinyl trays, with a number of preforms in each carrier - at least for smaller lenses like these. I imagine that the huge f

> The finished preforms are packed in vinyl trays, with a number of preforms in each carrier - at least for smaller lenses like these. I imagine that the huge front elements for the like of a 600mm f/4 might call for more robust packaging. It looks just like a muffin tray, though each muffin is a lens element!