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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[4-10] Several other risk factors are the reason for the development of cataract in which one is found to be the serum sodium levels in the cataract patients lens which has the ion pump mechanism is not only applicable for the lens matter but is also related to the serum or plasma level of serum sodium and serum potassium i.e, normal lens has the Na+-K+ ATPase pump which keeps the ion in balance.[11-12] Hence increase in serum sodium and decrease in serum potassium level can lead to cataract formation.
Tenders are invited for Purchasing of instruments relate to wildlife study- Canon latest model Digital SLR, movie camera Handy cam made in Japan 50x optical Carl Zeiss,/Nikon body with normal lens only Canon/Nikon compatible zoom, 80-400/150- 500/150-600,Telescope for bird watching 8x42, 20x40 etc.
The two front camera could have a normal lens and an ultra-wide one like the Google Pixel 3.
While the normal lens does a great job with macro-photography....
The significant difference was observed among normal lens position and slight and other subluxations of the lens detected by 25 MHz UBM except the minimum distance between lens equator and ciliary process of the subluxated lens (Table 3).
Although Clcn3 and P-gp expressed faintly in normal lens anterior capsules under physiological condition, both were predominantly upregulated in galactosemia, and the early stage was a key period of lens osmotic expansion.
Excessive production of reactive oxygen species (ROS) plays an important role in the destruction of normal lens epithelial cell function [3, 4].
Therefore, while a normal lens refracts light to focus it elsewhere, a "gravitational lens" bends light.
resulting in degeneration of normal lens protein structure of lens fibres (Truscott, 2005).
RE: Lens can unwarp (defish) action camera shots, convert super fisheye and ultra-wide footage to normal lens perspective.
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.
Semina, "laminin alpha 1 gene is essential for normal lens development in zebrafish," BMC Developmental Biology, vol.