Balance is important but not always obvious when framing or looking at images. It can be made up of elements such as colour, tones, shapes and placement of objects amongst other things. I have selected some existing images and will show where the balance lies in each.
The first image is fairly simple. The larger group of rowing boats are balanced by the blue door, which is closer to the centre of the frame.
The second image is slightly more complex. The horse and foal are divided by the vertical centre line but the foal is obviously smaller than it's mother. The rocks in background add another element above them. This image is not a very well balanced one in theory but there are other shapes involved (curves are made by the horses necks and body shape) which will be discussed in a later exercise.
This image is another example of the smaller element balancing because it is closer to the centre line.
The larger elements of this image probably couldn't be more symmetrical! The smaller elements within the window add interest but are still reasonably balanced despite their different shapes.
The larger static landscape elements of this image are well balanced by the movement of the Springer Spaniel which is again closer to the centre line.
This was an interesting exercise because the majority of these images naturally show balance, even if I wasn't deliberately framing them to show this at the time. I believe an element of the photographers 'eye' for a good image taps into our natural liking for a balanced image.