The same thing over and over again.

Through trade shows and other events, I often speak with people in charge of various industries, and it seems that quite a lot of them are having a hard time.
Unless it is a very large company, only a few people in the production engineering department are in charge of image inspection.
Because it is "part of the production engineering department," it is a secret outside of the company, and no active information can be found even if one searches the Internet.
Therefore, they have no choice but to believe the sales talk of image sensor manufacturers, illuminator manufacturers, and others....
Furthermore, "unsuccessful" stories are also confidential and never come to the public.
Thus, everyone repeats the same mistakes.
Frankly speaking, I think it is strange that "confidential information" is kept outside the company for visual inspection before shipment.
I think it would be a lot better if we exchanged information more openly.