Smoother zoom using buttons

[returnedinformation]

Hello!

It's really nice that OpenCamera supports Zoom in and out button commands. I'm using DJI Osmo 4 and it recognises the zoom slider by default.

It would be really good if zooming with buttons could be any smoother, instead of having such rough transition during every step of a zoom. Getting to set a zoom step size would already help out, but smooth zoom transition could really help out.