iris diaphragm मीनिंग इन हिंदी

अधिक: आगे

An analogous dev in a photographic lens is called an iris diaphragm.
According to Rudolph Kingslake, the inventor of the iris diaphragm is unknown.
Other structures that are similar in appearance are iris diaphragms in cameras and the GDOs.
Lenses with 11, 12, or 15 blade iris diaphragms are often claimed to excel in bokeh quality.
The iris diaphragm in most modern still and video cameras is adjusted by movable blades, simulating the iris of the eye.
The iris diaphragm made its appearance as an adjustable lens stop in the 1880s, andi t became the standard adjustable stop about 1900.
The iris diaphragm had been common in early nineteenth century cameras obscura, and Ni�pce used one in at least one of his experimental cameras.
Mr . J . H . Brown, a member of the Royal Microscopical Society, appears to have invented a popular improved iris diaphragm by 1867.
Harrison and Schnitzer's iris diaphragm was capable of rapid open and close cycles, an absolute necessity for lenses with camera auto-aperture control.
Neutral-density filters are used to control exposure with iris diaphragm increases the ratio of the central obstruction found in those systems, leading to poor performance.

संज्ञा.

diaphragm consisting of thin overlapping plates that can be adjusted to change the diameter of a central opening
पर्याय: iris