Originally Posted by M_Six
Good eye. Yes, it was quite hazy this morning and the RAW file actually shows a darker, smog-like haze along the horizon line. It really needed the CPL. Yesterday was the same with a whiteish-blue sky full of haze. The type of light that makes your eyes hurt. No fun for landscape photography.
And it was shot at F10.
On your 100% crop, was there an AF point on the building? If not, then I suspect the lens is actually sharper than shown here. At 100% the AF point needs to be on the enhanced subject and you need either a high SS or tripod damped by your body weight.
I DO occasionally use my 70-200mm for scenics, but it really shines for close ups of animals and as a portrait lens.