Regulation means of mechanical optical shutter in the time of exposure time below mechanical light-valve shutter control time

Abstract

The inveniton discloses an adjusting method of mechanic shutter when the exposure time is lower than the control time of mechanical shutter, which comprises the following steps: (a) measuring the datum brightness value feedbacked by raw image under high brightness environment when obtaining raw image with preset correct brightness; (b) fixing the reference value of changing during shooting stage after stabilizing the auto expose; (c) adjusting the trigger point of mechanic shutter; (d) shooting to obtain the testing brightness value feedbacked by raw image of another image; (e) comparing the testing brightness value and datum brightness value; (f) setting the adjusted trigger point as real trigger point of mechanic shutter if the testing brightness value equals the datum brightness value.

Description

Technical field [0001] The present invention relates to an adjustment method of a mechanical shutter, in particular to an adjustment of a mechanical shutter in a high-brightness environment (above LV15) when the exposure time is lower than the time controlled by the mechanical shutter (mechanical shutter) method. Background technique [0002] There are many ways for people to commemorate good times. Among them, the most frequently used is photos, because no matter travel, party, or even all memorable moments, they can be recorded by the camera for users to remember in the future. In addition, digital cameras have the convenience of transferring the captured image data to electronic devices (such as computers) for modification processing, and their prices are gradually decreasing, so digital cameras are used. People are increasing day by day. [0003] Generally speaking, when the high brightness LV (luminance) is above 15, because the exposure time is quite short, if the control o...

AI Technical Summary

Problems solved by technology

[0003] Generally speaking, when the high brightness LV (luminance) is above 15, because the exposure time is quite short, if the control of the mechanical shutter is not very precise, it will cause the photo to be underexposed when the mechanical shutter is closed too early; Or, overexpose the photo when the mechanical shutter closes too late

However, the traditional indirect mechanical shutter adjustment method is based on the DNP light box (LV12.5) as the adjustment standard, but the adjusted value often has errors, resulting in high brightness, because the exposure time is lower than that of the mechanical shutter. The time can be controlled, so users tend to make the photos too dark or overexposed when taking pictures

[0004] Therefore, it can be seen from the above that the above-mentioned known digital cameras have the problem that the exposure time is lower than the time that can be controlled by the mechanical shutter because of the high-brightness environment. improvement

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