The main thing is the ability to do dolly zooms. But after diving in and using the lens, I found out that there are some cool things you can do with this feature. Now, as someone that primarily does photography, I was a little confused as to why anyone would want or need a power zoom lens and why you’d want so many ways to control that zoom. If you have a camera like the Sony FX3, you can also use the zoom rocker near the shutter button. Not only can you use the traditional zoom ring on the lens, but you can use the cocker on the side of the lens, program custom buttons to control things, and use remote controls. In terms of zooming functions, you can actually control the zoom of this lens in a multitude of different ways.
This means that the lens won't get bigger as you zoom. One great thing that I love about this zoom lens is that when you do adjust the zoom, all the moving elements are located inside the lens. That's because the quick and silent motors that are controlling the zooming function are the same motors that Sony uses in order to deliver such fast and accurate autofocus. Instead, you will get a sort of focus-by-wire feel that most Sony users will understand. This means that when you turn the zoom ring on the lens, you aren't actually controlling any sort of mechanical elements like you are probably used to with other zoom lenses.
is that all the zooming functions are done through XD-Liniar motors tied to optics inside the lens. In terms of lens design, this is a 16-35mm zoom lens that maintains a constant f/4 throughout the zoom range.
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