Original manufacturing can be divided into OEM and ODM. The difference between OEM and ODM is simply who does the design. Apple designed the iPhone, then gave the drawings to Foxconn and asked you to do it for me. That is OEM. If Apple says it wants to sell spaceships, and Foxconn designs and builds them for me and puts my trademark on them and sells them to me, that’s ODM.

Modern industrial products, in the context of economic globalization, have varying degrees of OEM for any product. OEM is normal, just like the relationship between Apple and Foxconn. Nikon also entrusts Foxconn to produce cameras, which is normal.

If it is ODM, it is a bit excessive. Pentax does have several ODM lenses. Although ODM is kept secret from the outside world, it can be seen that ODM only exists for Pentax's relatively marginal products, such as large zoom lenses, rather than high-end products.

To put it another way, if all Pentax lenses are ODM, then are the OEMs committing suicide? Why must we design such weird focal lengths as 16-50, 20-40, 50-135, 150-450, 31, 43, 55, 70, and 77? Weird apertures like 1.7, 1.9, and 4.5? A production line that cannot be standardized will go bankrupt...