here is the Tamron 28-75 iso100 ss0.3 f8 same position because it was on the tripod. When zoomed in, the Tamron was actually sharper but by very little and I'm sure since I don't have a cord to trigger the shutter, I may have shaked the camera ever so slightly. I was surprised that the Tamron was sooooooooooooo sharp. Now I'll go and play with the color temp and see what I can do with them. Both are sooc no usm added. I'd like now to crop them