I've been preaching for years about shooting at f/32 to get the maximum depth of field out of my lens, getting my whole subject in focus.
Many photographers think I'm crazy shooting this way, but if you think I'm crazy then you are also calling Ansel Adams crazy. Almost 100 years ago Ansel Adams, Edward Weston and a small number of other photographers started a camera club in California and the name of the club was Group f/64.
Their name, f/64, they took from a very small lens aperture used with their large format cameras, a pinprick that allowed them to capture the greatest possible depth of field in their lustrous, sharply detailed prints. In today's digital world, these “straight” photography champions are increasingly revered.
If you are interested in learning about the Group f/64 camera club, go to Amazon and buy a copy.
If you are interested in shooting at f/32 as I do, you will get some softness in your images from the diffraction, but easily corrected with the sharpening tools in our post processing programs.