I'm a newbie with 1000D. Bought about 2 wks + ago and have been going around taking pics. Came across someone using battery grip and wondering what it is for ? Is there any different between the rechargeable one and the battery grip ? Do it still have to use another type of batteries or using the original Canon battery given with the camera ? Can someone seniors explain ? What is wide angle lens and how to recognise them by what measurements ? Does tele-lens 75mm - 300mm good for taking near pics within 70 - 75mm onwards ? Thanks.