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Shading

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Shading
A technique used to prevent light from the enlarger reaching certain parts of the printing paper so that the exposure can be modified locally.
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Shading
Techniques Glossary Shading
A technique used to prevent light from the enlarger reaching certain parts of the printing paper so that the exposure can be modified locally.

As you can see, with wide zoom lenses on the 5D Mark II you can expect fairly strong corner shading when shooting wide open, though how much varies considerably from lens to lens (the EF 16-35mm F2.

shading sheets
transparent sheet and special sheet bearing visible or latent patterns of lines, dots, or designs, used to obtain shading and halftone effect in photographic positives or negatives.

Shading, in printing. Preventing the image light from acting on a selected area of the picture for a time during the exposure. See Dodging.

Shading - see Local control.
Shadow detail - details visible in areas that are darkest in the subject.
Sheet film - alternative term for cut film.

Applies shading to the interior of a layer that reacts to the shape of the layer, typically creating a satiny finish.
Sand Cast
The molten aluminum is poured into a sand mold to form the housing body ...

- Smooth shading for three-dimensional type
- Gradients
- Complex textures, such as bumps or spikes
- Photo-realistic materials (ice, feathers, glass, smoke and so on) from which to make type
- Detailed patterns ...

Hold-back (shading)
Photo printing method to make parts of a picture lighter than it would normally have been.
(see Burning-in & Dodging) ...

I also find that shading a lens when possible with a hand, hat or black card has far more effect in reducing flare and ghost than removing a filter.

The Healing Brush works by blending the area you sample seamlessly into the background so the texture, lighting, transparency, and shading aren't changed. You can either paint with pixels sampled from the image or select a pattern to paint with.

The sun is the KAPers best friend, it accentuates height through casting shadows, and offering shading on vertical surfaces. The two shots shown have not been changed in any "photo package". They were taken less than 60 seconds apart.

The color wheel can be very basic (like the illustration with this article) or be very complex and show minute shading differences for millions of colors. The color wheel shows the relationship of each color to other colors.

Underexposure of image corners produced deliberately by shading or unintentionally by inappropriate equipment, such as unsuitable lens hood or badly designed lens. A common fault of wide-angle lenses, owing to reflection cut-off, etc.

This can be important if the subject is flighty and won't let you get close (like a butterfly), if it bites or stings or if you keep shading your subject because your lens and camera are so close to it.

Once sized and shaped, I needed to bring back some of the original lens detail underneath the image around the edges - this is what gives the lens the shading indicating it is slightly rounded.

The opacity is the amount of shading. If you select a setting of, lets say 90%, the shading around the window will turn to dark grey.

Contrast is also the difference between the color or shading of the printed material on a document and the background on which it is printed, for example in optical character recognition.
[edit] References ...

Line Art
A type of graphic consisting entirely of lines, without any shading. Most art produced on computers is not line art because the computer makes it so easy to add subtle shadings.

So, there will be more color shading information and detail in the 300 PPI print than the 72 PPI print. Changing the document resolution does not change the pixel resolution of the existing digital image.

For this purpose some of the vertical columns and horizontal rows on the edge of the sensor are covered with a black dye - so called Video Signal Shading - and cannot be used for recording the image.

Skin tones, in black and white, are mellowed; blotches, blemishes, and uneven shading is less easily noticed than it is in color photos.

-Printing-in - system of local shading control used in printing in which additional exposure is given to selected areas of a print.

Similarly, a photographer may use filters or a shading device to reduce the amount of light in the scene.

Suffice it to say for the purposes of understanding photography, that the neural pathways from the retina run to the lateral geniculate to visual cortex in the occipital lobe.) Once there, the brain will process, interepret colors and shading, ...

In today's world of digital photography, some photo editing is necessary on nearly every picture. Digital cameras have to "guess" at the proper color, contrast, and shading of the pictures they take, ...

Image Enhancements: Electronic functions, such as shading, highlighting and zooming, that accent an image or portion of an image.

Patterns of other colors are created by intermixing monochrome pixel values with color pixels to produce shading and highlighting that appears to the eye as differing colors. See monochrome and contrast with halftone.

Any cast shadow has a partial area called a penumbra and completely dark area called an umbra. The penumbra has some illumination and some shade, the umbra is complete full shading of an object from a source of illumination.

Vignetting - An HP Real Life technology that corrects vignetting-a slight darkening of photo corners that naturally occurs with lenses-and uneven shading.
W - Z ...

to produce photos with softer light and uniform results. Using a light reflector can help you diffuse light and create a less “harsh' photo. The light reflector bounces natural light or artificial light, and prevents contrasts and hard shadings.

(You can avoid flare by either positioning your camera so that the light doesn't shine directly into your lens, or by shading the lens with your hand or a hat or any other opaque object. Just be sure that the object is kept out of the image frame.) ...

A lens hood or some other means of shading the lens should be used to prevent lens flare.

DIN: Emulsion rating specified by the German standards association (Deutsche Industrie Norm) . A doubling of speed is indicated by an increase of 3 DIN. 21 DIN= 100 ASA.
Dodging: A term for shading when exposing a print.

See also: Image, Camera, Light, Display, Software