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  2. Magnification - Wikipedia

    en.wikipedia.org/wiki/Magnification

    Optical magnification is the ratio between the apparent size of an object (or its size in an image) and its true size, and thus it is a dimensionless number. Optical magnification is sometimes referred to as "power" (for example "10× power"), although this can lead to confusion with optical power .

  3. Virtual image - Wikipedia

    en.wikipedia.org/wiki/Virtual_image

    The magnification of the virtual image formed by the plane mirror is 1. Top: The formation of a virtual image using a diverging lens. Bottom: The formation of a virtual image using a convex mirror. In both diagrams, f is the focal point, O is the object, and I is the virtual image, shown in grey. Solid blue lines indicate (real) light rays and ...

  4. Objective (optics) - Wikipedia

    en.wikipedia.org/wiki/Objective_(optics)

    One of the most important properties of microscope objectives is their magnification.The magnification typically ranges from 4× to 100×. It is combined with the magnification of the eyepiece to determine the overall magnification of the microscope; a 4× objective with a 10× eyepiece produces an image that is 40 times the size of the object.

  5. Image scaling - Wikipedia

    en.wikipedia.org/wiki/Image_scaling

    An image scaled with nearest-neighbor scaling (left) and 2×SaI scaling (right) In computer graphics and digital imaging, image scaling refers to the resizing of a digital image. In video technology, the magnification of digital material is known as upscaling or resolution enhancement.

  6. Lens - Wikipedia

    en.wikipedia.org/wiki/Lens

    where M is the magnification factor defined as the ratio of the size of an image compared to the size of the object. The sign convention here dictates that if M is negative, as it is for real images, the image is upside-down with respect to the object.

  7. Image sensor format - Wikipedia

    en.wikipedia.org/wiki/Image_sensor_format

    The name of a 1" digital sensor should more accurately be read as "one inch video camera tube equivalent" sensor. Current digital image sensor size descriptors are the video camera tube equivalency size, not the actual size of the sensor. For example, a 1" sensor has a diagonal measurement of 16 mm. [27] [28]

  8. Geometrical optics - Wikipedia

    en.wikipedia.org/wiki/Geometrical_optics

    The image size is the same as the object size. (The magnification of a ... Incoming parallel rays are focused by a convex lens into an inverted real image one focal ...

  9. Micrograph - Wikipedia

    en.wikipedia.org/wiki/Micrograph

    A micrograph is an image, ... Magnification is a ratio between the size of an object on a picture and its real size. Magnification can be a misleading parameter as it ...