Nikon’s 50mm f/1.8 lens is an amazing fixed focus piece of glass that is immensely popular. (Trust me, buy it. only $125 on Amazon) The only thing is that the 50mm translates into almost a 75mm focus point that is best suited for portraits and not everyday photography. The new AF-S DX 35mm f/1.8 DX lens however comes at 35mm which is so much better for everyday use as it’s equivalent to 52.5mm on an FX camera.
Plus, Nikon threw in some of the higher-end features like the Silent Wave Motor for a smooth auto focus and lens controlled manual/auto focus control while keeping the cost around $300. The 50mm f/1.8 is a great lens and should be in every lens stable, but it seems like it’s going to have company as soon as this new lens becomes available. (and it drops in price a bit)