A lot of people who bought the 24-70 mark ii are trying to convince themselves as well as others that they made a good(perhaps "worth it") purchase. Wake up people don't lie. The fact is, this argument whether the mark ii is worth the upgrade from mark 1 is the same thing as the argument of having more pixels. When you only view the image 100% crop then you will notice those things. Other than that, you will barely notice(if you will notice) the better sharpness. For the record, i owned both but end up selling the mark ii after 2 months of extensive use.