Abstract: An embodiment includes an auto-darkening apparatus for supporting welding performed by a human welder. The auto-darkening apparatus includes a housing configured to be removably installed into a welding helmet. The auto-darkening apparatus also includes an ADF lens assembly configured to transition from an un-darkened state to a darkened state in response to light from an arc being formed between a welding electrode and a work piece during a welding process. The auto-darkening apparatus further includes a magnification assembly integrated with the ADF lens assembly within the housing. The magnification assembly is configured to provide magnification of light coming through the ADF lens assembly. The magnification is continuously user-adjustable from a defined lower level of magnification to a defined upper level of magnification.