To sony bp-65h battery photograph the correct exposure of the works, must first understand the metering metering principle of the camera. Metering system is aimed at "is generally taken body" of the design. A normal body was taken, is subjects of tonal, tonal and bright dark tonal among together, weighted average after the reflectivity of 18% for produced in the brightness of the gray moves to reproduce the purpose, therefore, no matter the built-in camera metering or independent metering table, for it is, no matter what the object you at the tonal on film, it always think subjects is in the gray moves, and provide the reappearance of the gray moves exposure data.

Reflex metering reflex metering sony bp-l40 battery, is measured subjects reflection brightness, its principle is based on 18% of gray attune reproduce metering brightness. Photometers adopt measure taken by light body is reflected out of the light intensity, but the measurement results vulnerable to be taken body itself color, background brightness of the influence of the factors such as appear measurement errors. We are on the camera for the metering reflex metering.

The incident type metering incident type metering table was able to measure the position taken by body how light intensity, but can't be measured by the shine of itself is taken body. Only independent type metering table can simultaneously incident type metering and reflex metering photography skills. sony bp-l90 battery