Digital camera dead pixels v1.0 test official version

Software introduction A small program for
testing digital camera CCD dead pixels and noise, which can be used to identify the quality of DC. By the use of netizens, the effect is good.
Note:
Dead pixels are generally problematic pixels if photographed correctly.
Bright spots depend on exposure time and sensitivity, and may be noise.
Please check these points carefully to determine what they really are.
Before the test shot, we first need to cover the lens cap and adjust the maximum aperture of the camera. It is best to use the fastest shutter speed for shooting, and then switch to different shutter speeds for several test shots. The highest resolution of the camera, that is, the best mode of the photo, take several photos in succession, the photo at this time is of course completely black, and then input it into the computer to carefully check whether the photo has fixed bright spots or dark spots. When taking pictures, use all black (cover the lens with black cloth), use the largest aperture, and the longest exposure time.
Generally, there is no dead pixel in 8 seconds, and 1/60 second is qualified. The noise of the machine and the dead pixel are relative. Due to external conditions and individual differences, the problem cannot be fully explained, it is only possible.
Let's take a new Fuji S7000 digital camera bought by a friend as an example to see how to check the dead pixels on the CCD.
First, we're going to take an all-black photo with the camera. The best way to take this photo for DSLRs and cameras that can add an adapter ring is to shoot without removing the lens cap. We close the lens cap and turn on the camera power switch.
Set the camera to manual and use manual focus.
Set the camera to the maximum resolution of 6 million pixels, adjust the ISO value to the highest ISO400, and set the aperture to the maximum value of F 2.8.
Choose different shutter speeds to shoot completely black photos, here we choose the commonly used shutter speeds of 1/100s, 1/60s, 1/15s, and long exposures of 1 second, 5 seconds, 10 seconds and The longest is 15 seconds.
After shooting, transfer the picture to the computer and open the Dead Pixel Test software.
Click the "Browse" button on the right and select a test JPEG file.
Here we take a pure black image with a 1s exposure time just taken as an example, the image name is DSCF1407.jpg.
After selecting the file, set the brightness higher than 60 lumens as noise, and set the brightness higher than 250 lumens as dead pixels. In the test data, Hot represents noise and Dead represents dead pixels. Click the "Test" button to the right of the "Browse" button, and the test begins.

Digital camera dead pixel v1.0 test official version download URL http://www.xiazai.com/wins3044#js_active_url