as the title says, what do you think shifting the eyeband from 360 to "regular" vision is.
none?
free?
simple?
Complex?

Change linked device mode - Free Action as per combat rules.

Kicking Levarr Burton in the nuts is a Complex Action.

stupid me, I meant is that appropriate, due to the shifting of perceptions, does a free action suffice or does the character have to take more than that, no action to accomodate the shift? or a perception check to accomodate?

I'm akin to the logic that its similar to turning the lights off it takes a while to adjust...

The ware is gimped enough, neh?

i think it would take as much effort and time as blinking.

how's that? the dicepool modifier only affects when you are moving around

Because the benefit is largely fluff, and can be duplicated with AR and/or sensors rather easily, cheaply and without essence cost. The brain would adjust, even if you had to give it a little help, incurring (at most) the distracted penalty to perception tests (which is what happens with the AR version). "All tests while in motion," is the rule, like in a car, walking, standing on a conveyor belt, etc. It's a waste of money and essence as is.