Using this lens is easy. First, make sure your NEC projector is one of the compatible models listed in the product description. Then, carefully attach the lens to your projector according to the instructions. When using, adjust the zoom to get the image size you want. As for maintenance, keep the lens clean by using a soft, dry cloth to wipe it regularly. Avoid touching the lens with your fingers to prevent smudges. Also, store the lens in a dry and cool place when not in use. If you notice any issues with the lens, contact NEC's customer service for assistance.
