Well, in daily life, blinking problem has just annoyed many people. And that can be kind of serious. For your situation, I have to say that it may be related with the nerve system of your eyes, when you are shooting. As we know that when you are shooting, you may feel kind of nervous. And because of that, of course, it will just affect your eyes, leading to frequent blinking. So to treat it, you need to have a deep breath first. And then just calm down. And in that way, maybe it can be helpful. Also, having some ice on your eyes can be effective too. By the way, you should know that blinking can be also caused by eye infection too.