A color filter works by absorbing certain wavelengths of color and transmitting the other wavelengths. For example, a yellow color filter absorbs all colors except yellow, letting only yellow through, so the objects viewed appear to be yellow. If a blue light from a blue filter his a red object, the blue color is absorbed and the object reflects no light, making it appear to be black.Know More
Light is the only source of color. Opaque objects show different colors by absorbing certain parts of the light spectrum and reflecting the parts that remain. The reflected color is the color that the object appears to the eye. Color pigment is made of atoms that can absorb light with a single frequency or a range of frequencies.
A filter is a transparent material that allows some colors of light to pass through while absorbing the rest of the colors. This process is called color subtraction. A filter lets the remaining wavelengths pass through instead of reflecting them like an opaque object. White light contains all the colors, while black is the absence of color. A color filter absorbs its complementary color. For example, a magenta color filter absorbs green, leaving the remaining color wavelengths to pass through the filter.Learn More
To slow down the shutter speed, switch the Nikon D3000 to manual exposure or shutter priority mode, and then use the command dial to adjust the shutter speed to a lower setting. Various automatic settings also have slower shutter speeds.Full Answer >
The subject matter of a photograph is the primary object being photographed for a project or the primary subject of interest on which a photographer focuses. Subject matter varies for every photographer, and there are no finite categories of subject matter.Full Answer >
To enlarge an image without losing quality, use photo editing software such as Adobe Photoshop, Gimp or Irfanview. These programs use a process called Fractal Interpolation, which compensates for variations in pixel coloration when images are enlarged.Full Answer >
The simplest way to differentiate a real image from a virtual image is to determine whether it can be projected onto a screen. These two types of images are also differentiated from each other based on the image’s position in relationship to the lens and the object, by its size in relationship to the object and by its vertical orientation.Full Answer >