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  2. Lens - Wikipedia

    en.wikipedia.org/wiki/Lens

    This happens when the lens is inserted into a converging beam (being focused by a previous lens) before the location of its real image. In that case even a negative lens can project a real image, as is done by a Barlow lens. For a given lens with the focal length f, the minimum distance between an object and the real image is 4f (S 1 = S 2 = 2f).

  3. 60 Cute and Spooky Printable Halloween Pumpkin Stencils - AOL

    www.aol.com/lifestyle/60-free-printable-pumpkin...

    For design inspiration, we put together 60 free, printable pumpkin carving stencils. With so many to choose from, there’s a stencil to fit every carver’s vision.

  4. Contact print - Wikipedia

    en.wikipedia.org/wiki/Contact_print

    A contact print is a photographic image produced from film; sometimes from a film negative, and sometimes from a film positive or paper negative. In a darkroom an exposed and developed piece of film or photographic paper is placed emulsion side down, in contact with a piece of photographic paper, light is briefly shone through the negative or ...

  5. Photographic printing - Wikipedia

    en.wikipedia.org/wiki/Photographic_printing

    Photographic printing is the process of producing a final image on paper for viewing, using chemically sensitized paper.The paper is exposed to a photographic negative, a positive transparency (or slide), or a digital image file projected using an enlarger or digital exposure unit such as a LightJet or Minilab printer.

  6. Real image - Wikipedia

    en.wikipedia.org/wiki/Real_image

    In other words, a real image is an image which is located in the plane of convergence for the light rays that originate from a given object. Examples of real images include the image produced on a detector in the rear of a camera , and the image produced on an eyeball retina (the camera and eye focus light through an internal convex lens).

  7. Original camera negative - Wikipedia

    en.wikipedia.org/wiki/Original_Camera_Negative

    The original camera negative (OCN) is the film in a traditional film-based movie camera which captures the original image. This is the film from which all other copies will be made. It is known as raw stock prior to exposure. The size of a roll varies depending on the film gauge and whether or not a new roll, re-can, or short end was used. One ...

  8. Achromatic lens - Wikipedia

    en.wikipedia.org/wiki/Achromatic_lens

    Uses an equiconvex crown glass lens (i.e. R 1 > 0 with −R 1 = R 2) and a complementary-curved second flint glass lens (with R 3 = R 2). The back of the flint glass lens is flat ( R 4 = ∞). A Littrow doublet can produce a ghost image between R 2 and R 3 because the lens surfaces of the two lenses have the same radii.

  9. 50 Easy Halloween Party Ideas That'll Turn Your Bash Into a ...

    www.aol.com/50-easy-halloween-party-ideas...

    In this spooktacular Halloween party guide, we’ve compiled some of the 50 most unique and exciting Halloween party ideas and decorating ideas from some of our best-loved DIY blogs!

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