Operating Manual

128

Function Reference

Adjust the amount of light hitting the CCD by changing the aperture.

Opening the aperture (reduce the aperture value)

Objects closer and farther than the focused

subject will be more out of focus. For

instance, if you take a picture of flower

against a landscape with the aperture open,

the landscape in front and behind the flower

will be blurred, emphasizing only the flower.

Closing the aperture (increase the aperture value)

The range in focus expands forward and

backward. For instance, if you take a picture

of flower against a landscape with the

aperture narrowed, the landscape in front

and behind the flower will be in focus.

Effect of Aperture

Depth of Field

When you focus on a portion of the subject, there is a range in which

object closer and farther will also be in focus. This focused range is

called the depth of field.

• The depth of field for the L differs depending on the lens

but compared to a 35 mm camera, the value is roughly one aperture

setting lower (the focused range becomes narrower).

• The wider the wide-angle lens, and the farther away the subject, the

wider the depth of field is. (Some zoom lenses do not have a scale

for depth of field because of their structure.)

Depth of Field Shallow Deep

Area of focus Narrow Wide

Aperture

Open Close

(Smaller value) (Larger value)

Lens focal length

Longer Shorter

(Telephoto) (Wider)

Distance to the subject Near Far