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2. Aspheric lens - Wikipedia

   en.wikipedia.org/wiki/Aspheric_lens

   An aspheric lens or asphere (often labeled ASPH on eye pieces) is a lens whose surface profiles are not portions of a sphere or cylinder. In photography, a lens assembly that includes an aspheric element is often called an aspherical lens . The asphere's more complex surface profile can reduce or eliminate spherical aberration and also reduce ...

3. Photographic lens design - Wikipedia

   en.wikipedia.org/wiki/Photographic_lens_design

   The type of lens being designed is significant in setting the key parameters. Prime lens - a photographic lens whose focal length is fixed, as opposed to a zoom lens, or that is the primary lens in a combination lens system. Zoom lenses - variable focal length lenses. Zoom lenses cover a range of focal lengths by utilising movable elements ...

4. Dust reduction system - Wikipedia

   en.wikipedia.org/wiki/Dust_reduction_system

   A dust spot caused by a dust particle on the image sensor. A dust reduction system, or dust removal system, is used in several makes of digital cameras to remove dust from the image sensor. Every time lenses are changed, dust may enter the camera body and settle on the image sensor. Digital single-lens reflex cameras (DSLR) are particularly ...

5. Doublet (lens) - Wikipedia

   en.wikipedia.org/wiki/Doublet_(lens)

   Doublet (lens) An old Carl Zeiss Tessar camera lens with four elements, comprising two doublets. The front doublet is air-gapped and divergent; the rear doublet is glued and convergent. This arrangement was better at correcting spherical and chromatic aberrations and astigmatism than previous lens designs. In optics, a doublet is a type of lens ...

6. Photographic processing - Wikipedia

   en.wikipedia.org/wiki/Photographic_processing

   Photographic processing or photographic development is the chemical means by which photographic film or paper is treated after photographic exposure to produce a negative or positive image. Photographic processing transforms the latent image into a visible image, makes this permanent and renders it insensitive to light.

7. Shoppers love this $7 eyeglass cleaning kit to get lenses ...

   www.aol.com/lifestyle/shoppers-love-this-7...

   Originally retailing for $10, the Koala Eyeglass Lens Cleaner kit is really a no-brainer buy, and at $7 it's a must-buy. It's not only wildly affordable but it's wildly effective. It's not only ...