i did like to check is there a difference in a macro zoom lens and a normal zoom lens..? Perhaps an example will be between AF 70-300mm F/4-5.6 Di LD Macro 1:2 and AF-S VR Zoom-Nikkor 70-300mm f/4.5-5.6G IF-ED.. The cost is like a huge difference.. I need something tat i can zoom for either for close-ups or zooming into something tat is out of reach from a 18-70mm lens.. Please advise.. Thanks..