How many of GX9's "5-axis IBIS" are actually IB?

Helen wrote:

Juan Muchos Jarros wrote:

pardon me for asking this if it is clear to all, but it is unclear to me from the descriptions i've read what portion of the IBIS is actually built in to the sensor, and what is only available when using OIS Panny lenses. it looks like (to my uneducated mind) the sensor only includes the same 2-axis stabilization (simple shift up-down-left-right?) as was part of the GX7, with the rotational & fore-aft stabilization being performed by the lens? or vice versa?

i guess my question is, if i were to buy they GX9 & hook it up to my Oly 12-40, what kind of stabilization would i see?

5-axis is what you’d get, like on any current OM-D body. From the GX80/85 onwards, Panasonic has been using a magnetic levitation IBIS system rather like the Olympus one. Neither system does fore-aft movement, as that would interfere with focusing.

I think that the OP might have been referring to whether or not the “5-axis” stabilisation included the dual or triple extra stabilisation from any lens OIS available.  Somehow perceiving that the 5-axis stabilisation needed the help from lens OIS to achieve that effect.

As far as I am aware the Panasonic bodies are now full 5-axis IBIS and that any extra help from the lens OIS is just an added bonus.

My not terribly researched response would be that the stabilisation result of an Olympus lens without stabilisation would be very much the same on a current model IBIS stabilised body whether it was either an Olympus or a Panasonic body - but of course reserving the perceived opinion that Olympus IBIS alone is always slightly more equal