Thenk for help :)
this give me some information, and I think important to know informatrion like about OS-Optical Stabilizer (what thundering1 wrhit ). 
what about goole, and another serching sites.....  I dont' try serch somthing like "photography glossary"....  maybe becose my "great" english LOL +). 

Thnks, AlexSM.