AF-S is Nikon's lens logo. Nikon lens group G with its own drive motor refers to a G-shaped lens without an aperture ring. Aperture adjustment needs to be carried out in the fuselage. ED refers to ultra-low dispersion glass. VR stands for shockproof performance. II stands for the second generation lens. This lens also has an IF code, which stands for internal focus. SWM silent wave engine. By the way, the tutor of ABC Qin Tian English I am learning just told me that learning English is easy. Learning spoken English must have suitable learning space and objects. The level of foreign teachers is very important. Europeans and Americans are much better than Southeast Asians, and their spoken English is the best. 1 Uninterrupted daily oral communication will have the best learning effect for the personalized learning of 1 ... After learning, you need to review and listen to the recorded documents to help strengthen your memory. There is really no practice subject who can learn to speak more, practice more, ask more questions, listen more and read more after-class materials on Want Want or Aisi. If the context is improved quickly, the learning and growth will surely advance by leaps and bounds ~ collectively referred to as the second generation ultra-low dispersion glass shock-proof lens, the driving motor is 0mm to 00mm, and the maximum aperture value.