Why is this is the Rodney Dangerfield of Nikon lenses? It's no slouch, and yet it's not the fastest. It's not the sharpest. It's not the lightest. It's not the brightest. It's not the most rugged. It doesn't produce the best bokeh.
So why have I barely removed it from my D750 since I got it? Because for most casual shooting, the compromises have been more than worth it. Compared to a prime lens, or to a 24-70mm f/2.8, this lens offers great VR, great range, and great portability. I almost feel guilty using it so much, because I know it's not my "best" lens, but this lens's versatility keeps winning out.
I recently had an opportunity to put the VR through its paces, shooting a high school theater production from my seat in the audience. I would normally shoot such a show with my 50mm f/1.8, but with a deep stage and no ability to move around, I decided to start with the 24-120mm f/4 and switch lenses if needed. The lighting varied from bright spots to near total darkness, but the 50mm f/1.8 stayed in my bag. On my D750 (in quiet/continuous mode with spot metering and 3D focusing) the 24-120 focused quickly and consistently. Handheld at pretty slow shutter speeds, the sharpness exceeded my expectations and only a handful missed the mark.
Here are some samples. Remember these were taken handheld in a dark room at very slow shutter speeds:

Handheld 1/50 sec
Handheld 1/25 sec in near total darkness
Handheld 1/50 sec
Handheld 1/50 sec
Given this price and the optical range of this lens, that's pretty hard to beat.
If I was a professional lugging a variety of lenses on shoots, or doing studio work, I would probably choose other lenses. My biggest complaint is the bokeh, which is meh. However, for this amateur, this lens is getting more than its share of use.
So why have I barely removed it from my D750 since I got it? Because for most casual shooting, the compromises have been more than worth it. Compared to a prime lens, or to a 24-70mm f/2.8, this lens offers great VR, great range, and great portability. I almost feel guilty using it so much, because I know it's not my "best" lens, but this lens's versatility keeps winning out.
I recently had an opportunity to put the VR through its paces, shooting a high school theater production from my seat in the audience. I would normally shoot such a show with my 50mm f/1.8, but with a deep stage and no ability to move around, I decided to start with the 24-120mm f/4 and switch lenses if needed. The lighting varied from bright spots to near total darkness, but the 50mm f/1.8 stayed in my bag. On my D750 (in quiet/continuous mode with spot metering and 3D focusing) the 24-120 focused quickly and consistently. Handheld at pretty slow shutter speeds, the sharpness exceeded my expectations and only a handful missed the mark.
Here are some samples. Remember these were taken handheld in a dark room at very slow shutter speeds:

Handheld 1/50 sec
Handheld 1/25 sec in near total darkness
Handheld 1/50 sec
Handheld 1/50 sec
Given this price and the optical range of this lens, that's pretty hard to beat.
If I was a professional lugging a variety of lenses on shoots, or doing studio work, I would probably choose other lenses. My biggest complaint is the bokeh, which is meh. However, for this amateur, this lens is getting more than its share of use.



