What is DOF preview?

by Dean Sadler
(Namiba)

I want to know what a DOF preview is...

Comments for What is DOF preview?

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Oct 17, 2016
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Nov 03, 2015
Depth of field NEW
by: davemuller

Depth of field is controlled by the aperture of the lens.

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Aug 26, 2015
DOF mean Field of preview NEW
by: Anonymous

DOF mean Field of preview actual it refers to no optical preview which maybe proclaiming in all Nikon D series. you face difficulties when you click sharp focus if you are student and want to learn extreme macro or want to shallow depth then buy D310 its best for you and also get DOF features one of my student of buy assignment bought D310 and they easily acess all features of the camera in learning process

Aug 09, 2015
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Jul 23, 2009
Depth of Field
by: Digital SLR Guide

DOF stands for "Depth Of Field" so a DOF preview shows you what sort of depth of field you're going to get in your photo.

When your camera locks focus on a subject, that spot is called the plane of focus.

There is an area in front of and behind the plane of focus that ALSO will appear in focus and this is the depth of field.

Depth of field is controlled by the aperture of the lens - a wide lens aperture results in shallow depth of field while a narrow lens aperture results in deep depth of field.

Shallow depth of field is commonly used to blur the background in a portrait image while deep depth of field is used to keep everything sharp in a landscape photo.

A depth of field preview option on a digital SLR camera lets you "see" the depth of field in your photo by looking through the viewfinder.

When you press the DOF preview button, the camera sets the lens aperture to whatever value you have selected (usually the lens is wide open).

If you select an aperture of f/16, then pressing the DOF preview button will narrow the lens aperture to f/16 and you should be able to see lots of depth of field when you look through the viewfinder.

The only drawback is that when you narrow the lens aperture, you also dramatically reduce the amount of light passing through the lens and reflecting up to the viewfinder.

This is why you will often see the image in the viewfinder get MUCH darker when you use a DOF preview.

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