How to: get the most out of your depth of field.
DOF button: This is a button you will find on your camera body, if you have one at all. What it does is step down your Aperture to preview your DOF. In most cases it’s at the front of the camera and just under the lens. If you can’t find it check your manual to see if you have one and where it is.
When you press DOF button the view through your view finder will become darker if you are using a large F-number ( small aperture ). this is because less light is getting in. I say this as sometimes the view is too dark to really see whats going on. but you now know its here so give it a try.