How to prevent lens from developing light?

The first is how to find out. When taking backlight photos, if it is normal, if you look out from the viewing frame, the far and near scenery, such as buildings and trees, should be very clear without any glare. When you shake the camera to find the ideal composition, you find that the scenery in the picture suddenly becomes turbid and dazzling, which means that the lens just collided with the front of the sun and the halo swallowed up all the scenery, so this abnormal phenomenon will occur. You should change your angle quickly and avoid the sun. Another way to understand is to ask the subject to help you concentrate, because the subject is standing opposite the camera and it is easy to see everything. After you have selected all the shooting positions and camera pitch angles, please ask the subject to look at the camera and let him remind you that this is the ideal inspector.

Secondly, when taking backlight photos, be sure to put a hood on the lens, so that the hood can help you block the direct sunlight that may enter the lens. But sometimes the hood doesn't matter. This is because when shooting full backlight, the position of the sun is just low, and it is inevitable to use a hood. In this case, you can ask your companions who are present together to use newspapers or books, hats, or even the photographer's own hands to help block the sun above the camera. The height and distance of separation can be determined according to the actual situation at that time, but it must be ensured that neither the sun shines on the lens nor the shielding tool can be brought into the picture, because both will damage the photo.

There is one more thing to pay special attention to. Excess sunlight should never shine on the frame of the outer ring of the lens. Because Cromy has strong reflection ability and is close to the lens, its strong reflection will invade the lens and cause halo, which will also cause some damage.