Difference between 50mm and 35mm?

Well i have a Nikon d3100 and its a crop sensor, I have a 50mm f 1.8 so on my camera its really a 75mm and i wanted to get a 35mm because i feel that the 50mm doesn't really fit much, i have to stand way back to fit in other stuff in the frame. So the 35mm is a 52.5mm on my camera. Would it be worth paying $200 for the 35mm/52.5mm? It seems like it won't make the much of a difference, please correct me if i'm wrong…

Added (1). Well thinking about it, comparing it too a 75mm and 52.5mm since its a crop sensor, wouldnt it be a even bigger difference, a 22mm difference? Instead of a 50mm and a 35mm which would only be a 15mm difference?

Added (2). And also, i know i can use my kit lens since its 18-55 but since i got the 50mm f 1.8 i don't like using the kit lens because the 50mm quality looks so much better, thats why i want the 35mm f 1.8

I'm positive your d3100 came with the 18-55. Use that to discover the difference between the two.

From 50 to 35 isn't a whole lot of difference, but it used to be back in the days before computers could calculate ray-trace designs in seconds instead of eternities. That's why they're still around, the design hasn't changed since early last century.

My favorite wide lens used to be a 20mm, which I believe is the equivalent of a 10mm for digital. Since the First Law of Photography states that cost is irrelevant if you reallyreallyreally want the shot, then get one of those.

Two hundred bucks for a lens? Cheap.

On a 35mm film camera or full-frame DSLR a 50mm lens is considered a "normal" lens since it approximates the angle of view of the human eye. So the 35mm lens on your D3100 would be considered a "normal" lens.

On a 35mm film camera or full-frame DSLR a focal length of between 85mm to 105mm is considered an ideal portrait focal length. The 50mm (75mm) lens on your D3100 thus makes a good choice for portraits.

Perhaps you should consider a wide-angle lens like the AF-S DX Nikkor 10-24mm (15-36mm on your D3100) f3.5-4.5G ED or the AF-S DX Zoom-Nikkor 12-24mm (18-36mm on your D3100) f4G IF-ED.

I have both the 35mm f/1.8 and a 50mm f/1.8. Since I shoot NBA & NCAA basketball from beneath the basket, I rely on the speed of these lenses to let me use a high shutterspeed and a low ISO to capture the action.

Since I like capturing the "entire" scene, and not just a closeup of a player when they're driving to the basket, I find the 35mm is my mainstay.

You'll see the results in most of my basketball photos shown below.

By the way, the above advice is excellent about using your kit 18-55mm lens to give you an idea of the different lens viewpoints.

The focal lengths of the kit lens will be good for 80% or more of the pictures you want to take, use it for a (long) while and then, when you begin to see trends in your photography, widen your lens collection. You may want to go with a wider angle, or a telephoto, or a Macro Lens, or wider aperture, only buy lenses you have a need for. Just try using the kit lens on the 35mm setting for a while.

Many Photographers suffer from GAS, (Gear Acquisition Syndrome), don't become one of them, though the temptation is great because you think it will improve your photography, of itself it won't unless you know how the reap the benefits of the extra gear.

I have the 18-55 kit lens and the 35/1.8 and the 35mm is my walk around the lens. Lighter, faster and AF is pretty fast. For events I use the slightly wider 28/2.8 but wish Nikon would make a 28/1.8 like Canon does. (NIkon, are you listening? I want that lens so bad I've considered switching systems.)