Nikon D5100 & AF-S DX NIKKOR 50mm f/1.8G?
If i purchase the AF-S DX NIKKOR 50mm f/1.8G will this fill the space for my Kit lens which is AF-S DX NIKKOR 18-55mm f/3.5-5.6G VR (3.0x) or should i still need the kit lens, I know 1.8G doesn't have any zooming still i want to make sure about the distance covered by the kit lens?
What do you mean by "distance covered" by the lens?
The 50mm/1.8G is a good lens. It's always as far zoomed in as the 18-55mm one when that one is being set to 50mm. If by covering distance you mean the ability to zoom in, then it indeed does cover approximately the same distance as the 18-55m. Be aware though that it can't zoom *out* at all. That too is a very important aspect.
I think you would seriously miss the kit lens. Without it you'd completely lack any wide angle capability.
No, they overlap. If you want to extend the range of your camera, you either need to get a wider angle than the 18mm end of your zoom lens, such as 14mm; or you need to get more zoom than 55mm, such as the Nikon 55-200mm.
The 18-55mm lens is very functional and quite useful to most beginning photographers. Keep it.
There are two very good reasons for having the 50mm f1.8G:
1) On your D5100 it makes a good portrait lens.
2) In low-light situations when you don't want to use the flash the fast f1.8 aperture allows you to have a higher shutter speed at a lower ISO setting.
Keep the 18-55mm zoom for your outdoors walk around lens.
So my suggestion is to buy the 50mm f1.8G.
Distance? I'm sure they cover the same. Zoom is not what you think it is.
The 50mm lens is a fixed focal length lens and a short telephoto at that. 50mm is good for close-up portraits. Your kit lens is a variable focal length lens or a zoom lens that goes from 18mm (good for large group shots and landscapes) to 35mm (good for people, pets, street and most anything) to 55mm (close-up portraits and short detail work). If you didn't get it yet, it's all about angle of view. Focal length is more or less angle of view. Zoom is just the ability to change angle of view. You could zoom a non-zooming lens by simply walking.
One advantage of the 50mm f/1.8 though is speed. Since it has a large maximum aperture size (f/1.8) you can use this lens to shoot at relatively low light and for fast action. You can also blur backgrounds more easily with this lens making it more suitable for portraits.
When you get the 50mm lens, it doesn't mean you will forget your 18-55mm already.No. The dSLR way is to gather different lenses as you can that will make you more versatile. That's why there's that interchangeable mount system.