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  2. Dust reduction system - Wikipedia

    en.wikipedia.org/wiki/Dust_reduction_system

    The system consists of a very thin piece of filter glass placed in front of the image sensor; the area between the filter and the sensor is sealed, so no dust can enter. Whenever the camera is turned on, a piezoelectric driver induces a vibration in the filter glass, shaking dust off. A piece of adhesive located inside the camera traps removed ...

  3. Mirror image - Wikipedia

    en.wikipedia.org/wiki/Mirror_image

    A mirror image (in a plane mirror) is a reflected duplication of an object that appears almost identical, but is reversed in the direction perpendicular to the mirror surface. As an optical effect , it results from specular reflection off from surfaces of lustrous materials, especially a mirror or water .

  4. Pentamirror - Wikipedia

    en.wikipedia.org/wiki/Pentamirror

    A roof pentamirror contains 3 mirrors. A pentamirror is an optical device used in the viewfinder systems of various single-lens reflex cameras instead of the pentaprism.It is used to reverse again the laterally reversed image coming from the reflex mirror.

  5. Reflex camera - Wikipedia

    en.wikipedia.org/wiki/Reflex_camera

    The mirrorless interchangeable-lens camera achieves the same result by providing the photographer with a digitally captured image. The twin-lens reflex camera provides both a viewfinder image by reflecting the image onto ground glass and an image through another lens to the film. The image exposing the film is not reflected.

  6. Mirror lock-up - Wikipedia

    en.wikipedia.org/wiki/Mirror_lock-up

    With mirror lock-up the mirror (2) flips up towards (5) well before the shutter (3) opens. As a result, light no longer reaches the eyepiece (8). Mirror lock-up (often abbreviated to MLU) is a feature employed in many Single Lens Reflex (SLR) cameras. It allows the operator to reduce vibration-induced motion blur during exposure. It also allows ...

  7. Pellicle mirror - Wikipedia

    en.wikipedia.org/wiki/Pellicle_mirror

    Two thirds of the light from the camera lens was let through the mirror, while the rest was reflected up to the viewfinder screen. [4] The Pellix pellicle mirror was an ultra-thin (0.02 mm) Mylar film with a vapour deposited semi reflecting layer. Since there was no mirror blackout, the user could see the image at the moment of exposure. [5]

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    mail.aol.com

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  9. Twin-lens reflex camera - Wikipedia

    en.wikipedia.org/wiki/Twin-lens_reflex_camera

    Late model Rollei Rolleiflex TLRs introduced the widely copied additional feature of a second-mirror "sports finder". When the hinged front hood knock-out is moved to the sports finder position a secondary mirror swings down over the view screen to reflect the image to a secondary magnifier on the back of the hood, just below the direct view ...