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  2. Pinhole camera - Wikipedia

    en.wikipedia.org/wiki/Pinhole_camera

    A home-made pinhole camera lens A pinhole camera is a simple camera without a lens but with a tiny aperture (the so-called pinhole )—effectively a light-proof box with a small hole in one side. Light from a scene passes through the aperture and projects an inverted image on the opposite side of the box, which is known as the camera obscura ...

  3. M42 lens mount - Wikipedia

    en.wikipedia.org/wiki/M42_lens_mount

    The M42 lens mount is a screw thread mounting standard for attaching lenses to 35 mm cameras, primarily single-lens reflex models. It is more accurately known as the M42 × 1 mm standard, which means that it is a metric screw thread of 42 mm diameter and 1 mm thread pitch.

  4. Twin-lens reflex camera - Wikipedia

    en.wikipedia.org/wiki/Twin-lens_reflex_camera

    A twin-lens reflex camera (TLR) is a type of camera with two objective lenses of the same focal length. One of the lenses is the photographic objective or "taking lens" (the lens that takes the picture), while the other is used for the viewfinder system, [1] which is usually viewed from above at waist level.

  5. Owner's manual - Wikipedia

    en.wikipedia.org/wiki/Owner's_manual

    2007 Toyota Yaris hatchback owner's manual 1919 Ford Motor Company car and truck operating manual. An owner's manual (also called an instruction manual or a user guide) is an instructional book or booklet that is supplied with almost all technologically advanced consumer products such as vehicles, home appliances and computer peripherals.

  6. Accessing AOL Sites or Apps Using Windows 10 - AOL Help

    help.aol.com/articles/accessing-aol-sites-or...

    Click Install from the App page. Once the app is installed,click Open to view that app on your desktop. Use the steps included below to pin an app to your start menu to find your favorites easier!

  7. Pinhole occluder - Wikipedia

    en.wikipedia.org/wiki/Pinhole_occluder

    An improvised pinhole has a similar but better effect. The same principle has also been applied as an alternative to corrective lenses: a screen of pinholes is mounted on an eyeglass frame and worn as pinhole glasses. Differential diagnosis: pinhole worsen vision: Macular diseases, [5] central lens opacities [6] Vision static with pinhole ...

  8. Pin AOL.com to your Windows 10 Start menu - AOL Help

    help.aol.com/articles/how-to-pin-aol-com-to-your...

    The AOL homepage can be pinned to your Start menu to avoid having to open your browser and manually enter the web address. Pinning an item to your Start menu creates a tile that acts like a shortcut to a website you use the most.

  9. Pinhole glasses - Wikipedia

    en.wikipedia.org/wiki/Pinhole_glasses

    Pinhole glasses, also known as stenopeic glasses, are eyeglasses with a series of pinhole-sized perforations filling an opaque sheet of plastic in place of each lens. Similar to the workings of a pinhole camera , each perforation allows only a very narrow beam of light to enter the eye which reduces the size of the circle of confusion on the ...

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