The fourth product generation is currently available as a modular PTL series, which allows any combination of visual and image fields on both sides (object-side FOV 37-390mm; image-side FOV 8-82mm). There is a choice of fixed aperture or variable aperture, whereby easy adaptation to all common camera mounts is always guaranteed. A 90° deflection is available for many variants if installation space is limited. The range is rounded off with telecentric lighting suitable for all lenses.