Optical glass
Used for manufacturing lenses and prisms. It is specially manufactured to be free of defects and distortion, and to withstand heat and humidity.
OPTICAL GLASS - High-quality, color-free glass having specific refractive qualities, used in lenses and other components of optical systems.
OPTICAL ZOOM - A true zoom effect unlike a digital camera's digital zoom.
Optical glass must be bubble-free and must have a constant refractive index and constant chromatic d
Optical glass
To have a list of TLR cameras, see the Category: TLR. TLR is an acronym for Twin Lens Reflex. What d ...
- Optical glass pentaprism
- Spherical Acute Matte focusing screen (interchangeable)
- Frame coverage approx 100%
- Magnification approx. 0.74x
- Eye-relief 20 mm from eyepiece, 21 mm from frame
- Eyepiece shutter ...
Lens - the optical glass your camera takes a picture through
Lens Speed - determined by the amount of light your lens lets into your camera (measured by maximum f-stops)
Macro Lens - lens used for extreme close-ups ...
You can use ports made out of optical glass or acrylic. Optical glass is more expensive, but much more scratch resistant than acrylic, and water falls off it much easier if you are doing over-under shots.
4X: KENKO Teleplus Pro 300 converters are made with high quality multicoated optical glass supplied by Hoya corporation, the worlds largest manufacturer of optical glass.
An unusual effect of these optical glasses is to substantially widen the field of view to include a part of the peripheral area not visible to both eyes.
Plain glass filters are just that - transparent pieces of optical glass which are not designed to cut out any light and thus have solely protective value.
Lens - disc (s) of optical glass used to form an image of a subject on a sensitive material [The enlarger uses a lens just like a camera. Lens come in many different types. Think of a pair of glasses to see better or differently.
ED (Extra-Low Dispersion) Glass An optical glass developed by Nikon that is used with normal optical glass in telephoto lenses to obtain optimum correction of chromatic aberrations.
An optical device, used to increase the effective focal length of a lens, consisting of optical glass. It is mounted between the camera and the lens and usually comes in three different sizes: 1.4X, 1.7X and 2.0X. A 1.
One or more pieces of optical glass or similar material designed to collect and transfer rays of light to form a sharp image on film, paper or a projection screen.
Optical glass, while harder than most metals, is softer than sand and the silicate materials that make up most of the Earth's crust, so if you rub a tad too hard, you're likely to scratch your filter or lens.
L
Lens
One or more pieces of optical glass or similar material designed to collect and focus rays of light to form a sharp image on the film, paper, or projection screen.
Lens, Adjustable-Focus
A lens that has adjustable distance settings.
The surfaces of spherical lenses made of optical glass are ground into aspherical shapes by grindstones revolving at high speeds.
There is no substitute for a good piece of glass in front of your expensive lens to protect it (under the guise of a UV filter or a Skylight filter or whatever - it's virtually clear, high quality optical glass which will protect the front of your ...
barium crown glass
an optical glass containing soda (Na2O), lime (CaO), and silica (silicon dioxide) composites.
barium flint glass
an optical glass containing 45 to 65% lead oxide.
Lens.One or more pieces of optical glass used to gather and focus light rays to form an image.
Lens element. A single piece of optical glass that acts as a lens or as part of a lens.
One or more pieces of optical glass or similar material designed to collect and focus rays of light to form a sharp image on the film, paper, or projection screen.
Lens aberration ...
-Crown glass - low dispersion optical glass.
-Cubism - early twentieth century European art movement characterized by the rendering of forms as simplified planes, lines and geometric shapes.
More recently, these can be obtained as standard optical glass filters, like the Tiffen Softnet series. These function through "selective diffusion.
In my experience with cleaning multi-coated filters, optical glass can be cleaned to perfection with the following methods: ...
Your camera's lens is positioned so it "sees" though a clear optical glass filter. Your camera is protected from moisture by the plastic sack and the lens by the glass filter. We should note that these are fine for snowstorms as well as snorkeling.
A good basic enlarger for 35mm black and white photography is the Omega C700 enlarger. It has a rigid steel girder and optical glass condensers. It also accepts 120 negatives. It cost ~$200 ...
Lens technology has come a long way since the days of simple point and shoot cameras of a few years ago. It is now possible to correct many lens faults and color shifts because qualities of optical glass have improved considerably over the years.
The Soft Focus Optic’s multi-coated optical glass doublet creates a much flatter field of focus than previous Lensbaby optics, making this optic well-suited for a variety of soft focus applications.
based in Hauppauge, Long Island has been manufacturing filters for over 75 years using proprietary ColorCore technology, an exclusive lamination process that bonds the actual filter material permanently in between two layers of optical glass.
materials on a lens surface to reduce ghost images and flare produced by internal reflections and insure faithful color rendition; in the Nikon Integrated Coating system, the number of layers is determined by the type of optical glass and the ...
Lens One or more pieces of optical glass or similar transparent material designed to collect and focus rays of light to form a sharp image on the film, CCD sensor, paper, or projection screen.
Filters are available in three forms: optical glass disks bound with metal rims, lacquered gelatin film squares, and glass squares. Glass disk filters are the most practical for general use.
Lens: Optical glass or a similar material that collects and focuses light to form an image on film.
Lens Hood or Shade: An attachment located at the front of a lens to keep unwanted light from striking the lens and causing image flare.
 See also: Image, Lens, Camera, Light, Photograph
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