Prime lenses are those that are fixed.You will see on this picture that there are no range of numbers, rather it just has 85 mm for the zoom and 1.8 for the f –stop.These lenses are best used for when you are shooting at a fast moving object in a poorly lit area.For example, if you are a photographer at a basketball game. You need a perfect shot of the player but he is moving too fast and the arena isn’t brightly lit.With these lenses you have a faster shutter speed so the moving object will appear frozen.Having a faster shutter speed usually results in a darker picture, however, since these lenses have a low f-stop number, it automatically brightens the image.
OUR EXPERTS RECOMMEND THESE PRIME LENSES
Canon EF 50mm f/1.8 II
Nikon Nikkor AF-S 35mm f/1.8G DX Prime Lens (Black)