I found this on John Paul Caponigro’s Blog.

MILTON GLASER DRAWS & LECTURES from C. Coy on Vimeo.

This explains fundamentally why I’ve never been content with photography as a medium of expression. I’ve always felt I was lacking something important. As I’ve worked on my drawing over the past few months what Mr. Glaser says here has become more and more clear to me.

Photography is a medium of discovery. You look for patterns and moments of meaning within nature and within mankind. And you capture them in that moment. In photography I look for the wholeness of the compostion – the relationship of the parts within the frame.

Drawing is a medium of observation. You examine, understand, explore and capture the details of the object. There is a depth there I don’t find in photography. Which, honestly, is what makes it difficult for me to sit down and do it. It takes a serious commitment in time and effort to draw. While with a camera I watch and when I see it – I aim, compose shot and walk on. The commitment there is to carry a camera and to constantly watch.