standard lens

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standard lens

[′stan·dərd ′lenz]
(optics)
Usually the lens provided with a camera as standard equipment; in still cameras, the standard lens is one whose focal length is about equal to the length of the diagonal of the negative area normally provided by the camera; the normal field of view of a standard lens is about 53°.
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One camera with a normal lens for photographing paintings
Luneburg lenses can focus light or incoming electromagnetic waves to an off-axis point at the edge of the lens (not directly in front or behind it as a normal lens would do).
If achieved, "it would allow us to create a lens which offers the best opportunity for successful fitting for the patient, rather than using a normal lens and then painting it, which we have always done," he said.
The camera came with a free tele-photo lens, but no normal lens that can shoot things close-up, so most of the time I am looking at shooting pictures of people and objects more than 400 metres away
Moriarty explains: "It involves removing the normal lens of the eye as in a cataract operation and placing a multi-focal intraocular lens in the eye.
Robinson, clarifies the mechanisms that govern normal lens development, concepts that are fundamental to the understanding of lens disorders.
This Dreamy Diana Lens comes with an adaptor for either a Nikon or Canon camera and slots on to the front of your DSLR like any normal lens, giving even serious snappers a taste of Lorno's zany, anything-goes approach.
The exciting thing about this project is looking beyond the normal lens through which we see ourselves, then having others look beyond how they see us," says Irvin, who has been working on this concept since 1996.
He works with only a normal lens and available light.
If you have to use normal lens, you have to go close to the subject and feel it.
They soon learned that the damage was the result of the trailer lights, but with normal lens enclosures in place, trailer lights on (usually in defiance of dock rules that they be turned oft), and with the trailer pressed to the dock seal.
Then there are the double door mirrors with a normal lens on the top and a wide angle one at the bottom to eliminate blind spots - brilliant.