BetterPhoto Q&A
Category: How to Use Camera Lenses and Focus

Photography Question 

Ben R
 

Focus?


How do you make it so one part of the photo is in focus (such as a flower) then have the background (a tree for instance) blury, and also what does aperture do?


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December 28, 2003

 

Bob Cammarata
  The aperture setting, (f-stop), is what determines how much of the scene will be in focus.

To isolate an individual object... such as a flower, set your aperature to a low number (f-5.6 or lower), and focus on the flower. The background will then be out of focus.

The higher aperture numbers increase your focus range, (depth of field) progressively. At f-22, everything from the foreground to infinity should be in focus.
Also, the aperature setting, in conjuction with the shutter speed, controls how much light reaches the film for proper exposure.


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December 28, 2003

 
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