Hi Ricardo!! Thanks for the support my friend!! I have a 105mm Heliopan polarizer + Lee 100mm filters. The 16-35L works well on this gear, just a little vignette on the corners if your filters are on the diagonal or if they aren't 100% straight . I usually do some clone stamp to erase it or sometimes some crop, but if you choose 17mm or 18mm instead of the 16mm you don't get any vignette. Cheers my friend!!
The blue sky came like this because it was 90º with the sun, and it's the better position to polarize skies. All the other colors came like this because of the low sun and it was an amazing the good light. The post process is Saturation ( +10 or +15)and Vibrance (+15 or +20, never more than that, not to exaggerate the colors, this way they look more natural. Finally I resize and sharpen for web. Hope it helps. Cheers and thanks a lot!!