I came across a very interesting article that pertains (for now) to the new 42.5 lens. This is a very well written article that references the info used to a visit the author had to Panasonic's lens factory in Japan. Definitely worth reading if you want to expand your general knowledge of lens technology. http://www.imaging-resource.com/new...-panasonic-beats-the-curse-of-aspheric-lenses I don't believe there is any problem with cross posting from another Digital Camera site. If there is, my apology goes along with my request for forgiveness!