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A latent image is an invisible image produced by the exposure to light of a photosensitive material such as photographic film. When photographic film is developed, the area that was exposed darkens and forms a visible image. In the early days of photography, the nature of the invisible change in the silver halide crystals of the film's emulsion ...
Illustrate the formation of images using the technique of ray tracing. Determine power of a lens given the focal length. Lenses are found in a huge array of optical instruments, ranging from a simple magnifying glass to the eye to a camera’s zoom lens.
Mar 12, 2024 · Illustrate the formation of images using the technique of ray tracking. Determine power of a lens given the focal length.
- Case 1: The Object Is Located Beyond 2F
- Case 2: The Object Is Located at 2F
- Case 3: The Object Is Located Between 2F and F
- Case 4: The Object Is Located at F
- Case 5: The Object Is Located in Front of F
When the object is located at a location beyond the 2F point, the image will always be located somewhere in between the 2F point and the focal point (F) on the other side of the lens. Regardless of exactly where the object is located, the image will be located in this specified region. In this case, the image will be an inverted image. That is to s...
When the object is located at the 2F point, the image will also be located at the 2F point on the other side of the lens. In this case, the image will be inverted (i.e., a right side up object results in an upside-down image). The image dimensions are equal to the object dimensions. A six-foot tall person would have an image that is six feet tall; ...
When the object is located in front of the 2F point, the image will be located beyondthe 2F point on the other side of the lens. Regardless of exactly where the object is located between 2F and F, the image will be located in the specified region. In this case, the image will be inverted (i.e., a right side up object results in an upside-down image...
When the object is located at the focal point, no image is formed. As discussed earlier in Lesson 5, the refracted rays neither converge nor diverge. After refracting, the light rays are traveling parallel to each other and cannot produce an image.
When the object is located at a location in front of the focal point, the image will always be located somewhere on the same side of the lens as the object. Regardless of exactly where in front of F the object is located, the image will always be located on the object's side of the lens and somewhere further from the lens. The image is located behi...
Light coming through the camera lens from an object being photographed strikes certain areas of the film, rendering the silver halide grains in those areas unstable. This creates an invisible, or latent, image of the object on the film.
a latent image – occurs in silver halide crystals that are struck by a sufficient number of photons. When the film is developed, the latent image produces a visible image.
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tribution of latent image sites in a film after exposure constitutes the latent image. Film processing converts the latent image into one that can be visualized (Fig. 6-2). The neutral silver atoms at each latent image site (see Fig. 6-2, B) render the crystals sensitive to development and image for-mation.
