Zoom in/out behaves weird

[xbyte99]

I have configured Left mouse button + scroll wheel up/down to zoom in and out of a page.
The zoom steps are kind of weird though.
Zooming in from 100% starts with 10% increments and then starts so increment exponentially up to 500%
Zooming out from 100% works with 15% decrements until 25%. When Zooming out from a higher zoom level (e.g. 500) decrements are much higher, resulting in quite odd zoom levels.

This way zooming feels quite choppy and irregular, especially when zooming out after zooming in.

Can you either adjust the zooming to adhere to the chrome standard zoom levels or at least add an option to use the chrome standard zoom levels? (25, 33, 50, 67, 75, 80, 90, 100, 110, 125, 150, 175, 200, 250, 300, 400, 500)