Originally Posted by danm
Well, that's the thing. L-series lenses are 'top drawer' for a reason - they have larger apertures, better IQ, and better build quality than mid-range lenses of similar focal lengths. Larger apertures and better IQ mean bigger glass and more elements to correct aberrations, meaning more size and weight, and better build means more weight. It's just physics, and to throw in a Star Trek reference, "Ye<span>cannaechange the laws of physics!"