Hi all. I am wondering how much stock to put into the ISO crops when it comes to deciding on a lens. I am currently in the market for a landscape lens. For "wide angle" landscape shots I use the wide end of my widest zoom, the 24-105mm. The sweet spot is 35mm @ f/5.6-f/11 (from viewing Bryan's ISO test results) for the wider end. The Canon 16-35 II seems the best bet for Canon wide angle. So how much weight do the ISO tests carry?? Should I be more concerned with real-world photographic examples?

Thanks in advance.

Damian