Well, today & tomorrow is the Rockford Airfest ... and I am taking the zooms out for the day, today ... because I have plans for the second day. The weather appears clear, so it'll be blue skies.

12-24mm f/4-5.6
24-70mm f/2.8
70-400mm f/4-5.6
200-500mm f/5-6.3

& the T/Cs (1.4x, 2x. 3x) ... just to add another dimension to some of this.

It is quite a backpack, with no extra LCs hanging off the back. (That's a switch)

Wish me luck ... and I better grab the sunscreen.