About this 3D model

In my old Minolta 200mm F4.0 lens, a plastic inner sleeve has shown clear signs of material wear. The problem seems to occur more often. The plastic forms a kind of crystal structure on the surface that I could not really remove. Therefore here is a replica in the alpha stage. A few interior details I have not yet been able to reproduce. --------------------------------------------- In my old Minolta 200mm F4.0 lens, a plastic inner sleeve has shown clear signs of material wear. The problem seems to occur more often. The plastic forms a kind of crystal structure on the surface that I could not really remove. Therefore here is a replica in the alpha stage. A few interior details I have not yet been able to reproduce.