Just curious, but I have the following questions: Why have Lenses gotten so much larger than the older manual focus lenses? Why do Lenses have so many more glass elements compared to older lenses? I thought, in general, more glass is not so good for certain image quality aspects. Couldn't Nikon, etc... create a new lens with fewer elements and better coatings to create a superior lens? Take the Nikkor 105mm f2.5 AI-s is a lens with five elements in four groups. But everything I've heard it is an excellent lens. Now I get the idea for SWM makes things a little larger width wise, but newer lenses tend to be a bit heavier in regards to "Professional Grade". My Nikkor 80-200mm f2.8 is a pretty heavy pig, not the most enjoyable lens to lug around. Thoughts?