Galaxy S4 camera worse than S3

I've upgraded from a personal Galaxy S3 to a Galaxy S4 provided by my employer. I've been taking a few photos with it and I've noticed that photos taken with the S4 are coming out blurrier more often than photos from the S3. I've removed the protective film from the camera lens, and I'm holding in the button while taking the photo until it focuses. The photos still come out blurry too often. I'm using the stock camera with default settings on both.

Any ideas?