lens aperture मीनिंग इन हिंदी

अधिक: आगे

TTL ) exposure metering, and at full lens aperture at that.
The important measure related to DOF is the lens aperture.
The lens is modified such that each colour channel has a different lens aperture.
The lens aperture is usually specified as an f-number, the ratio of focal length to effective aperture diameter.
"Multi-shot " exposes the sensor to the image in a sequence of three or more openings of the lens aperture.
The F-401 introduced the now common-place feature of using a thumbwheel instead of lens aperture ring to adjust the aperture.
DOF is determined by subject magnification at the film / sensor plane and the selected lens aperture or " f "-number.
The photographer would adjust the shutter speed and / or the lens aperture f-stop until the OVER or UNDER LED went out.
A total aperture of 8 corresponds to a lens aperture of 5.6, 4 and 2.8 with a 1.4x, 2x and 3x teleconverter, respectively.
It is true the finder does not go black during exposure, but at small lens apertures, the eye has no time to adjust to the dark finder.