Originally posted by JimJohnson either the 16-85 shooters' images are not downsizing well, or frankly the 18-135 has better resolution
I haven't checked that thread for a while, but every poster has a unique combination of image processing system and decision making process to determine which images to capture and which to post online. If anything, that thread has less diversity in posters and posts than this one, so if a couple of posters end up posting images that end up looking less sharp or contrasty, it will influence your opinion of the lens.
In terms of lens construction, I challenge anyone to consistently pick out the difference between HD and SMC coatings and at common focal lengths, there doesn't appear to be much difference in how the optical elements affect the image. However, pictures at 16mm are noticeably different from 18mm and on APS-C 135mm is a true telephoto focal length while 85mm produces much less telephoto compression of the background. I bought a DA 15 after the 16-85 came out, for less money and no regrets, but I respect other photographers who find the 16-85 more suitable. What drove me nuts were the posters who tried to convince everyone that the 16-85 was superiour to the 18-135 because it was sharper in the corners.
---------- Post added 01-21-17 at 11:35 AM ----------
Another dark, dreary January day here, thought I would post a picture from last summer taken at 135mm. This is a crop with roughly half of the original pixels. It was taken at ISO 1600 in P mode, I inadvertently changed the ISO from automatic to fixed the previous day and never noticed it until I tried to change the aperture in hyper mode and didn't get the shutter speed I expected. In my film days, the camera wouldn't have saved my bacon if I made a mistake like that.