Is the Background Blur Difference Between 105mm f/2.8 and f/4 Substantial?

One of the decision factors between the RF 24-105mm F2.8 L IS USM Z and the RF 24-105mm F4 L IS USM is the strength of the background blur they can create. So, I wanted to illustrate that difference.

Head over to the just updated RF 24-105mm F2.8 L IS USM Z review to see the background blur difference between 105mm f/2.8 and f/4 created using the f/2.8 lens. View both the full-size reduced and 100% crop image comparisons.

The answer is yes.