What does btob mean?

1, btob means smooth image. It is also the abbreviation of staff;

Image Smoothing Generally, the light diffusion of the lens in Jiao Wai is equal, so the light distribution of its virtual image is uniform. In this regard, through the optical element called apodization filter installed near the aperture, the luminous flux in the central part of the lens is more, but it is less as it gets closer to the periphery. Thus, the outline gradually fades, forming an ideal soft virtual image.

2.B2B (also abbreviated as BTB, Business-to-Business) refers to a business model in which enterprises exchange and transmit data and information through private networks or the Internet. It integrates enterprise intranet and enterprise products and services with customers through B2B websites or mobile clients, and provides better services to customers through the rapid response of the network, thus promoting the business development of enterprises.

Extended data:

As an actual image point, btob becomes a real image at point A through the lens, and is displayed as a virtual image at points B and C before and after it. The virtual images of ordinary lens at point B and point C are all circles with uniform brightness;

The defocus imaging of STF lens is due to the apodized optical elements, and the brightness of the circular image decreases as it goes to the periphery, which can realize soft and beautiful foreground and background imaging. Because it avoids the so-called "bilinear defocus" that deteriorates the foreground and background imaging, this lens is especially suitable for portraits and photography that require high texture performance like precious metals.

In some cases, there is a tendency called bilinear, which destroys the foreground and background imaging. Therefore, the spherical aberration can be adjusted by moving a part of the lens group to improve the foreground and background imaging, but usually only one of the background imaging and the foreground imaging can be improved, and the blur degree before and after can not be improved at the same time. The degree of blur depends on the brightness distribution of some Jiao Wai images.