On 03.6.7 8:39 PM, "Alan Chan" <[EMAIL PROTECTED]> wrote: > I am no material enginner. Those worn K/M lenses show silver metal which > can't be brass.
I am no expert on the lens barrel either but I once saw a brass helicoid and that's why I was assuming that older metal lens barrels were made of brass, but I also heard that they could be light metal (or alloy), usually aluminum. I cannot believe it is of steel though. Anybody? Ken
