Ask just about any photographer what lens is there favorite to shoot with. Most likely they will say a 50mm Prime Lens. These fixed point lens are a favorite of portrait photographers because of the shallow depth of field that they can produce, in other words they can blur the background while keeping the subject in focus. Which makes a photo really stand out. Sigma produces one of the most sought after 50mm lenses on the market for DSLRs. Being able to open up to an F1.4 makes this lens extremely fast, you’ll also be able to get a huge amount of light. Limiting your uses of unflattering head-on flash.
Save up those pennies, if you want to take amazing portraits. You’ll need one of these for your Nikon or Cannon.