Outdoor Quotes: (Travel)

When  preparing to travel, lay out all your clothes and all your money.  Then  take half the clothes and twice the money.

Susan Heller

Depth of Field

Depth of Field

The depth of field tells you how much of a scene will be in focus. The distance from the nearest object in focus to the furthest object in focus is the depth of field.

When you focus on an object 100 yards away, for example, you may find that everything between 90 yards and 150 yards is in focus. In this case, the depth of field would be 60 yards.

The higher the magnification, the shallower the depth of field will be. This is one of the disadvantages of choosing binoculars with a very high magnification.

Focus Difficulty

The smaller the depth of field, the harder it is to focus.

The depth of field changes as the distance to the subject changes. Usually, the closer the subject is, the shorter the depth of field.

Depth of field is more important with spotting scopes and telescopes than with binoculars, because they tend to have a much higher magnification.

Remember when choosing binoculars, that because focusing is more difficult, it is important that they should have a focusing adjustment that is easy to use and 'fine-tune'.