Soligor was originally the American Allied Impex Corporation trademark, used from 1956 for lenses and later cameras imported from Japan. They were best known for a T4 interchangeable mount for cameras. The T4 mount would allow for a universal application for swapping several lenses across different brands and cameras. Soligor offered several different types of lenses as well. Sell your Soligor equipment on Gear Focus to get the most value for your items