Okay i bought a D90 and it came with this lense Nikkor 18-105mm VR lense. First of all, this isn't a 'standard' lense is it? (like the lense i got with my film camera (35ml 28-80). So what the hell is it? It isn't a telephoto lense i don't think ...lenses still confuse me and i've never used anything apart from the standard lense so far. Secondly, VR means vibration reduction right? So should i just keep this on all the time or is there a reason i would want it off? Surely anything that reduces the vibration you would just leave on all the time. Forgive me and my noobish questions.