The ISO charts are up. It looks to me like


The 70-200mm F2.8L II as you would expect is the clear winner over the 70-300 at 70 and 200mm


The 70-300mm seems to be better than the 100-400mm L at both 100mm and 300mm.





[View:http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=113&Camera=453&Sample=0&am p;FLIComp=4&APIComp=1&LensComp=738&Cam eraComp=453&SampleComp=0&FLI=5&API=1]