What are the three small lenses of Russian 16mm f2.8 super wide-angle lens? What about this lens?

Upstairs is the post filter of this lens. Because the front lens curvature of the transfer lens is too large (protruding forward), the conventional front filter cannot be used. These three films are generally UV, medium yellow and red, and the latter two are mainly used for black-and-white photography of films.

What you should say is Ze Nithard F2. 8/ 16? He is the only Russian mirror with this focal length specification. This is a fisheye lens. This is a good head without image. Not only that, its ability to resist dark light is also rare in the lens of the former Soviet Union. You don't have to worry about fogging even when shooting in the sun, which may be related to the fact that the fisheye lens does not need to correct some aberrations. Small in size, much like Pentax's 16MM fisheye lens. The workmanship has also changed the appearance of CIS lens, which is quite modern. The lens comes with three rear ratio mirrors, which are mainly used for black and white photography. Note that it is difficult to replace them because of the special loss of the second inch. The only drawback is that the coating is relatively immature. You'd better not wear it.