Here is a Quick Take on how we clean the front element on our lenses here in Hollywood. Some of the products in this video may be readily available at your photo supply shop. I highly recommend only using non abrasive lens cleaning agents and disposable lens cloths whenever possible. It is also a must to use some type of air to clean any dirt or particles that may actually grind into the anti reflective coating. In some cases a little hot breath and a quick wipe with a clean t-shirt will also work.