Depth of Field Preview Button

Depth of Field Preview Button
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Beyond The Depth Of Field Preview Button
Russ Burden
Rating: 9 / 10 ...

DEPTH OF FIELD PREVIEW BUTTON - Many cameras are equipped with a preview button that, when pressed and held in, stops the lens down to the preselected aperture, allowing you to see how much foreground or background are in focus.

Depth of field preview button being pushed
The Hyper Focal Distance refers to having infinity in focus, and then whatever else that is in focus that is closer. The Hyper Focal Distance changes with the aperture f/stop setting.

Depth of Field Preview Button
A button (usually found around the lens mount) on a DSLR that, when pushed in, closes the lens to the metered aperture ("stops down the lens") to allow you to check the DOF.

A depth of field preview button can be a big help too.
When leaves get wet, they tend to reflect stray light that can reduce apparent saturation.

The depth of field preview button is usually found at the base of the lens mount, and can be pressed to simulate the streaks and polygonal flare shapes.

How to use depth of field preview button (if your camera has this option) what it does and tips for using it.

DSLR settings specifically found on Nikon camera's ...

To see the depth of field on an SLR-type camera, you press a depth of field preview button that stops down the aperture to the one that will be used to take the photo.

For more advanced users the GF2 is slightly limited in comparison to its predecessor, mainly due to the lack of its dedicated AEL and depth of field preview buttons.

This is where a depth of field preview button on an slr comes in handy. If your camera doesn't have one then your task is to think about the amount of focus necessary to represent the object according to your chosen theme.

Look through the lens and press the depth of field preview button. Sound aperture blades will move into place immediately, and the viewfinder will go dark.

Digital SLR usually have a Depth of Field Preview Button that is located somewhere near the lens. Unfortunately most Digital SLR with crop factor have a relatively small viewfinder, limiting the usefulness of this preview.

Pressing the depth of field preview button (if you have one) will pop the entire image into sharp view. Sharp focus will exist from 1/2 the distance from the lens to the hyper-focal distance into infinity. Sounds complicated, but it's really not.

Peterson lists these as the f/8 to f/11 settings that you should use when depth of field is not critical, but you want sharpness and contrast for your shot. Also helpful to me was a discussion of the depth of field preview button, ...

However, the depth of field preview button won’t work either. To check subject sharpness, take a photo, check the composition and the exposure, ...

So if you want to get a sense of the depth of field that will result from some other aperture setting you need to close the lens down physically to that setting. The depth of field preview button available on most Canon EOS cameras does just this.

To see what the film will see, you press the depth of field preview button.

See also: Depth of field, Depth of field preview, Depth of, Camera, Aperture