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The red-eye effect in photography is the common appearance of red pupils in color photographs of human eyes. It occurs when using a photographic flash at low lighting or at night. When a flash passes through the eyes and rebounds at the back of the eye, it causes a red reflex in an image, turning the subject's eyes red.
Color bleeding may refer to: Color bleeding (computer graphics) , an effect in 3D rendering where objects cast a hue onto other objects Color bleeding (printing) , the effect of areas of colored inks or dyes spreading into unwanted areas
Comparison of an ideal image of a ring (1) and ones with only axial (2) and only transverse (3) chromatic aberration. There are two types of chromatic aberration: axial (longitudinal), and transverse (lateral). Axial aberration occurs when different wavelengths of light are focused at different distances from the lens (focus shift ...
The red reflex (also called the fundal reflex) refers to the reddish-orange reflection of light from the back of the eye, or fundus, observed when using an ophthalmoscope or retinoscope. The red reflex may be absent or poorly visible in people with dark eyes, and may even appear yellow in Asians or green/blue in Africans.
Step Three: Remove Streaks. Combine one part vinegar and one part water in a bowl. Dampen a clean microfiber cloth with the mixture and apply it to the glass, wiping it down well for a streak-free ...
The effect is accomplished by directing the camera at a bright light source that would wash out most, if not all, of the frame area, or by having the effect processed in the film laboratory. While in 2014 some motion-picture directors were still opting for film emulsion-based photographic materials rather than digitally retrieved imagery, the ...
When encryption is in place, data erasure acts as a complement to crypto-shredding, or the practice of 'deleting' data by (only) deleting or overwriting the encryption keys. [ 2 ] Presently, dedicated hardware/firmware encryption solutions can perform a 256-bit full AES encryption faster than the drive electronics can write the data.
In the production of photographic prints, spotting is a type of retouching flaws in the finished print with specially made paints, dyes, pencils and pens. [ 1 ] White spots on gelatin-silver prints made from negatives are caused by dust adhering to the negative or paper during exposure.