Capturing a strong diagonal in a shot, can add strong structure to the end image. Add in to the equation shallow Depth of Field & you can further control where the viewers eye will fall in the shot.

In the example above the guitar strings & neck provide the strong diagonal. Your eye is automatically drawn to it & follows the line. Now to ensure the viewers eye stops where you want it, then use a shallow DOF to ensure that specific point is in focus & nothing else. So here I wanted the viewer to focus on the left hand of the guitar player. By using f/1.8 , prefocusing on the hand & then recomposing the shot, I was able to capture the strong diagonal & focus the viewers eye to where I want on the shot

Anyway, have a go & let me know how you get on

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