Pentax K10D ユーザーズマニュアル

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

Objects closer and farther than the focused 
subject will be more out of focus. For 
instance, if you take a picture of a flower 
against a landscape with the aperture open, 
the landscape in front and behind the flower 
will be blurred, emphasizing only the flower.

 

The range in focus expands forward and 
backward. For instance, if you take a picture 
of a flower against a landscape with the 
aperture narrowed, the landscape in front 
and behind the flower will be in focus.

When you focus on a portion of the subject, there is a range in which 
both objects closer and farther will also be in focus. This focused 
range is called the depth of field.
• The depth of field for the q 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 

deeper the depth of field is (some zoom lenses do not have a scale 
for depth of field because of their designs).

Depth of field

Shallow

Deep

Area of focus

Narrow

Wide

Aperture

Open

Close

(Smaller value)

 (Larger value)

Lens focal length

Longer

Shorter

(Telephoto)

 (Wide-angle)

Distance to the subject

Near

Far