On Blurriness
My claim is that when you see X sharper i.e., when you see a sharper image of X , you see more of X (in it). In the literature (for example, Tsomko , Kim & Izquierdo 2009), blurriness is seen as a property of pictures, resulting from a variety of causes: lack of focus, movement of objects, movement on the part of the subject, distance, ambiental obscurity, etc. There are two ways of identifying blurriness in images: a semantic and a syntactic one. From a semantic perspective, and regardless of the cause, blurriness/sharpness can be understood in terms of the quantity of information contained in the pictures, i.e., how much about the picture’s subject you can obtain from the picture. The basic idea behind the semantic approach is that there are properties of different granularity. For example, if you see someone from far away, you may be able to see that she has eyes but not what color her eyes are. If you directly see a racing car on a speedway, no matter how up close, you m