Having looked at horizontal and vertical lines within a frame, this exercise looks at diagonals. These are slightly easier to create within a photograph.
The reason for this is that straight edges such as fences or railings, will be horizontal if viewed from directly looking at them, if the perspective is changed, ie the angle at which the photograph is taken is changed, then the horizontal element is changed to a diagonal, as shown in the following images.
Image 1
Image 2
In images 1 & 2 it can be seen that changing the perspective increases the diagonals within the frame. As the camera pans to the left and also by deceasing the focal length of the lens the diagonals increase considerable.
Image 3
Diagonals within the frame give a feeling of depth, linear perspective largely based on diagonals, this is demonstrated in image 3, the diagonals give a great feeling of depth. This is increased by the photograph being taken extremely close to the ladder and by using a wide angle lens.
Image 4
As can be seen in all these images, diagonals have a greater sense of movement and direction than verticals and horizontals. This is because they make an immediate contrast with the frame edges. In image 4 the diagonals are created by the angled framework of the bridge structure, whereas in the previous 3 images the diagonals were created by the positioning of the camera and the focal length of the lens.
Having looked through images used as part of the course material, I have found the following ones using diagonals.
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