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The plano-convex lens is the most common type of lens element. It can be used to focus, collect, and collimate light. A plano-convex lens is useful as a simple imaging lens for systems where image quality requirement is not too critical. We also provide precision grade plano-convex lenses with tighter manufacturing tolerances. For higher quality image, we offer multi-element digital imaging lenses and computer-optimized achromatic doublet lenses. Plano convex elements have a Minimum Order Quantity (MOQ) ranging from 100 to 1,000 units.

Simply put, depth-of-field is how much of a photograph is in sharp focus from front to back. Digital Landscape Photography: In the Footsteps of Ansel Adams and the Masters, Michael Frye, 2010.

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If you set the camera's focus to the hyperfocal distance, your depth of field will extend from half of the hyperfocal distance to infinity—a much deeper depth of field. Complete Digital Photography, Ben Long, 2012.

We can achieve critical focus for only one plane in front of the camera, and all objects in this plane will be sharp. In addition, there will be an area just in front of and behind this plane that will appear reasonably sharp (according to the standards of sharpness required for the particular photograph and the degree of enlargement of the negative). This total region of adequate focus represents the depth of field.The Camera (Ansel Adams Photography, Book 1), Ansel Adams, Tenth Edition, 1995

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Depth of Field (DOF) is the range of distance in a photo that appears to be in sharp focus ... Depth of field is a creative decision and one of your most important choices when composing nature photographs. Nature Photography Photo Workshop, Nat Coalson, 2011

Another important control for landscape photography is depth of field, the amount of sharpness in a scene, from close to the camera into the distance away from the camera. It's sharpness in depth. Landscape Photography: From Snapshots to Great Shots, Rob Sheppard, 2012.

... the hyperfocal distance setting ... is simply a fancy term that means the distance setting at any aperture that produces the greatest depth of field. How to Use Your Camera, New York Institute of Photography, 2000.