Possible Duplicates:
What is a “diffraction limit”?
Why are my photos taken at f/11 less sharp than those taken at a wider aperture?
I have made 3 landscape pictures with f/12, f/22 and f/32. Shutter speed and ISO are almost same, but last one has a lot of blur and is very pale. Why this happen? My purpose was to get maximal DOF.
Details: Nikon d5100, 18-55 kit