Beginners of photography ask for help about B shutter control exposure.

Maybe the diagram is small, or the transformation is a little vague, but let's put aside this guess and say the diagram. I feel that this picture is organic, but the camera is shaking. Pay attention to fix the camera and use a better tripod. I just bought a shelf of several hundred dollars, but I can't fix it later. Finally, I bought the aluminum alloy shelves of Manfutu, which is the key point, but it is much safer.

Try to adjust the white balance to 100. The shutter is not that long. Try 10 second first, and the aperture should be as small as possible. If it still doesn't work, I'm afraid I'll have to change the upward adjustment filter and the middle gray mirror in exchange for a longer shutter time.

If it still doesn't work, the lights are still very bright, and even ghostly glare appears. Personally, I feel that there is no other way but to change the lens. Please also ask other friends to answer and study. In fact, I often encounter similar problems, but they are usually solved by reducing the mirror. In a few cases, glare can't be solved. Find a solution without changing the lens (to no avail ...)