Schneider Optics PYRITE LF focus tunable liquid lenses are a combination of a Schneider Optics lens and the Optotune focus tunable lens EL-16-40-TC. Using a 5mm or 8mm extension tube enables a wide range of working distances so the liquid lens can be operated in its optimal range. PYRITE LF lenses are available with a C-Mount or TFL-Mount. These industrial lenses are excellent for many industrial and machine vision applications such as barcode reading, quality control, package sorting and logistics.