Comparing lenses

Had some crap weather today, so I stayed inside and played with the cat.  I thought it would be a good idea to compare my niftyfifty the the kit lens that came with my camera. 

I used both lenses at their maximum aperture. I had to shoot a bit lower shutter speed to get the right exposure with the kit lens.  The niftyfifty produced a very shallow depth of field, but theres a bit of aberration around the whiskers.  The kit lens produced a much sharper image with a larger aperture and also eliminated the aberration around the whiskers.  I think I still need to do a little more testing to become familiar with the nuances of both lenses.