Sat 29-Dec-12 04:55 PM | edited Sat 29-Dec-12 05:00 PM by walkerr
As an owner of both, you definitely notice the difference in both size and weight. The 24-70mm weighs almost 35% more than the 24-120mm and coupled with the added length, it feels very different on the camera. Also keep in mind that the extra 50mm focal length of the 24-120mm can sometimes keep you free carrying an extra lens, so the practical weight savings can be even greater.
Despite all that, I wouldn't give up my 24-70mm. It's what I enjoy using for landscapes and any situation where size and weight aren't a concern. I like its control layout better than the 24-120mm or 24-85mm (I've never liked the reversed zoom and focus ring configuration), and it's definitely sharper than the latter.