I have one. Its great for a "grab and go" camera when you do not want to haul around a larger heavier lens.
A 50mm lens on a full frame camera looks just like what the human eye sees and with an aperture of 1.4 you can hand hold just about any shot regardless of the lighting conditions. Lightweight and small for easy maneuverability.
I have this lens on my d7100 and it pretty much stays on it.
Need a wide angle for a panorama? Are you backed into a corner and need just a bit more periphery? This lens will cover your needs without sacrificing your straight lines.
Absolute amazing piece of glass
No other company makes this...
Perfect for portraits, this lens will let you get close enough within the frame without getting too close for comfort to your subject.
A fixed, low aperture to let you take photos without a tripod under a few more conditions than its peers. Reduces image shake and has enough versatility to zoom in on those shots you don't have time to walk to.
Does the same as it's big brother, for a fraction of the price.
Similar to the f/1.4, this is the less-expensive sibling if you're on a budget and willing to sacrifice a little.
Let's face it... You want to take sports or wildlife photos? This is your lens.
A bit more pricey but a bit more aperture. Manual focus for that nostalgia.
What about the 35mm? One of the most versatile lens
Fast and great for mid-range shots.
Great zoom lense for medium to long range needs. Less expensive than the 70-200.