Tue 01-Jan-13 11:52 AM | edited Tue 01-Jan-13 11:52 AM by ajdooley
As stated, diffraction has been a law of optical physics since lenses appeared. That said, far more photographic defects are the results of numerous technical and technique failures by photographers than from diffraction. Unless you are doing specialized work such as macrophotography, DOF, adequate shutter speeds and proper focus are much more important. I hesitate to put it in the same category, but too often, issues of diffraction are similar to the ago-old question of how many angels could dance on the head of a pin. My advice is, take photographs, seek and share beautiful images and worry less about diffraction. Don't shoot as many brick walls or test charts either.