pardon my ignorance. Recently i was at the zoo and i saw one ang mo with an attached silver bodied lens. the lens body is silverish in color, like spray painted silver, or grey. definitely not the L beige nor chrome or stainless, if you get what i mean. it has the size or probably even larger than the 70-200 2.8L. It is not internal zoom and has 2 red "rubber bands". it was spotted with a petal lens hood of "silver" color as well. from my rough estimate it should have a filter size if at least 77mm. anyone has any idea what lens it that?