July 31 -
3:1 is pronounced 3 to 1. It is the aspect ratio of width to height of the photograph. This aspect ratio is often used for panoramic photographs (panos). Some of these could be considered panos but many are not.
3:1 No. 51
3:1 No. 52
3:1 No. 53
3:1 No. 54
3:1 No. 55
3:1 No. 56
3:1 No. 57
3:1 No. 58
3:1 No. 59
3:1 No. 60
3:1 No. 61
