I am using Nikon 28-200mm. I noticed that some of my pictures the background scenery was sharp but the subject in front was soft. The picture was taken at 28mm with F stop of 7.1
I am using Aperture Priority. When I was took the picture, I focus on the subject not the scenery. With the same setting, some pictures turn out to be sharp for both subject and scenery.
What have I done wrong ? Hope to get some valuable advise from Gurus out there.