5d3 & Zeiss Distagon, Moire?

Correct me if im wrong, but I seem to the detect the presence of moire on the 2nd image from the top, which appears all through stopped down to f16 and seems to disappear at f22. If u look at the grey part of the building on top of the white sign there seems to be a semi circle appreaing over the horizontal lines. Could well b my iphone lcd screen protector playing tricks on the image. Im away from my Mac so cant say for sure.

http://www.lenstip.com/...II_and_Zeiss_Distagon_T*_2.8_15_-_sample_shots.html

http://photogenics.photoshelter.com/