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Old Oct 25, 2006, 12:47 PM   #5
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Join Date: Aug 2004
Posts: 277

You do have things confused--the smaller aperture (higher number f-stop) will give you greater depth of field. The larger apertures (lower f-stop numbers) will decrease your depth of field. So, you would use aperture priority when you want to fix your lens opening for a specific depth of field you are trying to capture. You will have set the aperture, and the camera will (hopefully) select an appropriate shutter speed to give proper exposure. You would select shutter priority when you want a specific shutter speed, say to stop fast-moving action, and then the camera would select the aperture to give proper exposure. Hope this information helps.
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