Depth of field (Depth Of Field) ------ elementary

in optics, of special note, movie or photography, depth of field (Depth Of Field, DOF) is a detailing in space, you can clear imaging distance. Although the lens can only gather the light to a fixed distance away from this point will gradually blurred, yet in a particular distance,GHD Hair Straightener NZ, the degree of picture mist is the nude eye can no find, this distance is called depth of field . Fknow next to nothing ofme images, such as landscapes,GHD MK4 Pure Straighteners, extra suitable for deep depth of field, yet in portrait photography,GHD MK4 Gold Straighteners, the prevalent use of shallow depth of field to makeup.
depth of field namely routinely the object distance, lens focal width and lens aperture amount is decided, (relative to the focal length of the aperture size). In increase to the close, the common depth of field at the object lens magnification and aperture value of the decision.
nailed aperture, to addition the magnification, is closer to the subject material or the use of long focal length lens,GHD IV Styling Set, the distance will depress the depth of field; reduced magnification, it ambition increase the depth of field. If the nailed magnification, increase the aperture value (alley aperture) ambition increase the depth of field; dilute the aperture value (larger aperture) will reduce the depth of field.
For example:
1) ahead and later the remove aperture F/16 focal depth of field range that is larger than the F/2.8.
2) camera from the subject closer, the more shallow depth of field, the greater the contrary.
3) the lens focal length, the more shallow depth of field, the greater the contrary.

aperture ring on the depth of field and blur effects:
Focus (2) in the image plane (5) imaging, but at different distances of the points, such as (1 with 3) will be projected out of a opaque point,GHD NZ, This point is greater than the surround of muddle. Reduce the size of the aperture (4) can reduce those not in the converge point on the surround of confusion size, so vague it becomes difficult to detect more, see into all these point within the depth of field.



in depth within the image more clearly, in this environment before or after the image is more blurred.



aperture at f/32, the background more clearly



aperture at f/5.6,GHD MK4 Kiss Straighteners, aperture massive, the backdrop becomes blurred.