All photographers have a "vision." All photographers use their own criteria for what makes a good image or a bad image. I demand sharpness. I want images with proper contrast, shadow detail and highlight detail.
How is sharpness a "vision"? Sharpness is a technical attribute. Vision is about what a personal view of the world that a photographer conveys through their body of work.
Photos: http://www.spirer.com
One People: http://www.onepeople.com/
Surfaces and Marks: http://www.withoutgrass.com