Using this Konica Minolta zoom lens with your Barco projector is easy. First, make sure your projector is turned off. Then carefully attach the lens to the projector following the alignment marks. Once it's on, turn on your projector and you're ready to enjoy high - quality projections. When handling the lens, always hold it by the edges to avoid leaving fingerprints on the glass. To keep it in good condition, clean the lens with a soft, dry cloth regularly. If there are stubborn stains, you can use a small amount of lens - cleaning solution. Store the lens in its original box when not in use to protect it from dust and damage.