depth of field


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Related to depth of field: depth of focus, focal length, Shallow depth of field

depth of field

[′depth əv ′fēld]
(optics)
The range of distances over which a camera gives satisfactory definition, when its lens is in the best focus for a certain specific distance.

depth of field

The area in an image from front to back that is in focus. The smaller the aperture (the larger the f-stop number), the more objects are in focus both near and distant. The wider the aperture (the smaller the f-stop number), elements in front of and behind the object in focus appear soft or blurry.

Set a Mood
In both moving and still pictures, depth of field (DOF) is widely used to call attention or create feelings. By focusing on one element in the image and leaving the rest blurry, the audience is drawn to that part of the frame. In addition, making surroundings softer or foggy can eliminate unwanted background objects that distract from the subject of the picture. See f-stop and focal length.


Quite a Difference
Changing the f-stop from f/29 (top) to f/4.5 (bottom) turns all the unwanted objects in the background into a blur.


Quite a Difference
Changing the f-stop from f/29 (top) to f/4.5 (bottom) turns all the unwanted objects in the background into a blur.
References in periodicals archive ?
Wider field of view, hands free focusing and better depth of field are important incremental improvements to current night vision technologies, Estrera said.
The system then will work properly under daylight conditions because the significantly brighter daylight causes the iris of the lens to stop down far enough to provide a depth of field sufficient to cover the difference in focal point caused by the change in light source.
That means a single RICOH Extended Depth of Field Camera(EDoF) can capture images it typically would take multiple cameras to achieve C subjects in the foreground and background stay in focus without constant movement, refocusing, or shooting multiple images from different heights and depths.
CUTLINE: Depth of field is the term used to describe the sharpness in front of and behind the point of focus.
The result is an image in sharp focus in both the foreground and background--that is, with great depth of field.
For fulfilling the given application, Edmund Optics TechSpec Variable Magnification Lenses offers the the field of view as per the need, comprising an adjustable iris for depth of field control and they feature a C-mount compatible design with 2/3-inch sensor coverage for ease of system integration.
It is designed to improve retinal image quality without compromising depth of field and therefore provides greater quality of distance and intermediate vision.
Numerous color photographs illustrate pleasing composition, filter effects, lighting, exposure options, focus problems, depth of field, and tricks for shooting portraits, nature, sports, still life, and close-ups.
Wildi pairs explanations of the basic building blocks of composition with before- and after-photos showing the effects of tips on how to adjust color, depth of field, and other techniques to optimize desired effects for specific types of photos.
Shooting through a loft window, Gehr uses an extremely shallow depth of field to focus on the window screen's shimmering grid.
We positioned the laser with a helium/neon circular aiming beam, which allowed us to focus at a precise depth of field.
The principle of depth of field allows the eye to merge these focal planes into one image.