In a photograph with a narrow DoF, only a small slice of the image is in focus. In these two sketches, I have tried to illustrate what is meant by a narrow and large DoF. This involves more physics than I’m going to get into here! Spencer talks about it in his article “ Hyperfocal Distance Explained.” So check that out for more of the technical details if you are so inclined. Scientifically, it is based on something called the circle of confusion. It also depends on how good your vision is! But the transition from sharp to unsharp is gradual, and the term ‘acceptably sharp’ is a loose one! Without getting too technical, how you will be viewing the image, and at what size you will be looking at it are factors that contribute to how acceptably sharp an image is. Now your camera can only focus sharply at one point. Depth of field is the distance between the closest and farthest objects in a photo that appears acceptably sharp.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |