Most photographers associates large aperture with faster shutter speeds, however, especially true in music event photography, shutter speed is not always the most obvious advantage.
Shallow Depth of Field, Bokeh.
With the rapid advancement of camera sensor technology, even the most basic entry level camera from Canon and Nikon can comfortably shoot at ISO 128,000. I’ve heard alot of newby photographers commenting the useless of large aperture lenses if one can easily shoot at higher ISO to compensate for the shutter speed.
Yes, you can use the higher ISO to achieve faster shutter speed. But that is not the only reason to buy and use large aperture lenses.
Entry-level cameras are getting better ISO with lower price points, so how do you compete when anyone half decent can take a steady shot? How are you going to make the viewer/client instinctively choose you over others… Sure you can use extensive editing in Photoshop or even give out your photos for free!!
By using large aperture lenses, we can choose to limit the focus to where we want the viewer to concentrate on and leave everything else to be a creamy blured out background. This is what make a photo POP!!
1.
Settings: 1/80 @ f2 @ ISO1250 … the lens was 135mm f2 @ 135mm
2.
Settings: 1/320 @ f2 @ ISO1600 … the lens was 135mm f2 @ 135mm
3.
Settings: 1/400 @ f2 @ ISO1600 … the lens was 135mm f2 @ 135mm
4.
Settings: 1/400 @ f2 @ ISO1600 … the lens was 135mm f2 @ 135mm



