Beautiful portraits with blurry background
Take picture with blurry background or make near object sharp
and background blur set aperture of camera accordingly. Set the mode dial to
<AV> (Aperture priority) to adjust the depth of field.
AV stands for aperture value which is the size of the
diaphragm hole inside the lens.
Set the desired aperture –
The higher aperture, the sharper, the picture will look with
a wider depth of field. Set a higher f-number and focus than take the picture.
Three factors are responsible for blur background image-
- Aperture
- Distance between object and background
- Lens of the camera
When using a high aperture
note that camera shake can occur in low light scenes, a higher aperture will
make the shutter speed slower. Under low light, the shutter speed can be as
long as 30 sec. In such cases, increase the ISO speed and hold the camera steady
or use a tripod.
The depth of the field depends not only on the aperture, but
also the lens and subject distance.
Science wide angle lenses have a wide depth of field (range
of acceptable focus in front of and behind the point of focus) you need not set
a high aperture to obtain a sharp picture from the foreground to the
background. On the other end, a telephoto lens has a narrow depth of field. The
closer the subject, the narrower the depth of field. A farther subject will
have a wider depth of field.
