My hope is that Nikon will come out with a 24megapixel camera without the low pass filter that also shoots faster then the D750, so for now I have to stick to the D7100 as my back up. I carry 2 to 3 cameras with me when I am out and about because I don't like changing lenses on the fly and I use the D800E for wildlife and the D7100 for landscape. I thought about getting the D810 for landscape but I don't always like the file size of the 36meg pixel sensor. It's great for single shot wildlife and landscape photos but I am still learning about post processing and want to use multiple images for this and after converting my images from the D800E, sometimes the files sizes for each photo are over 200 megabytes in size.
So I thought about sharing my experience with this lens for those who have the D7100 or any DX format camera and who have thought about buying this lens. According to the bench marks its one of the sharpest lenses for the DX body if not the sharpest and I see the results after buying it and have no regrets.