During my recent road trip, I found myself carrying four lenses in my backpack. This makes for a reasonably heavy load when you consider that a gripped camera, teleconverter, batteries, filters and more are also packed in bag. Of course, I also carried a tripod and ballhead.
Yet, I was reluctant to carry less. During many of the photo shoots, I used all four lenses.
Here's an example from the Pennsylvania State Capitol. From the floor of the rotunda, I started very wide and then worked my way up through the higher focal length lenses:
1- Sigma 15mm fisheye
2- Nikon 14-24 2.8
3- Nikon 24-70 2.8
4- Nikon 70-200 2.8 (at 70mm)
5- Nikon 70-200 2.8 (at 100mm) 6- Nikon 70-200 2.8 (at 165mm)
All of these photographs were captured without moving the camera. While it can be a burden to carry a lot of lenses, it was worth the load to have the ability to capture the scene with a variety of pictures.