X-H2s three weeks in...

Craig268 wrote:

A question regarding the IS - if shooting at high frames per second, I'd think the shutter speeds would be high (light seems good).

That depends on the situation.  Sometimes I’m not shooting high FPS, just trying to use the faster AF and a stable shot, and the IBIS just really cannot stabilize as fast as the AF can lock.  I mean it makes perfect sense that it wouldn’t, but when you experience it is when you realize that limitation was always going to be there.  Before I was like IBIS is a must own and now I’m like, IBIS is much more limited than I realized it was.

Now if you’re just talking about action and burst shooting, I agree the light and shutter speeds will probably function perfectly.

If so, I'd think the need for IS whether it's in lens IS or body IBIS would be minimal.

As I mentioned above, it is a limitation of the IBIS system that you don’t really think about until you run into that wall.

A more germane item which the OP notes is that there's seemingly some limitation to IS. I've thought about this off and on - that is, both lens IS and body IBIS are mechanical systems. There's physical movement of parts involved. Empirically speaking, it's not surprising there's some threshold at which the electronics are operating faster than the mechanics.

Yes, I was just expecting more from the IBIS in single shot and it was pretty much the same as the X-T4 if the lens didn’t also have stabilization.  If the lens is stabilized, you do see a good improvement, but I haven’t measured that to say for sure how many stops you would get.

It's sort of a "how many angels can sit on the head of a pin" situation but shortcomings and successes of mechanical and electronic interfacing is an interesting topic.

Right and that’s something that is very logical and completely understandable, but you just don’t think about it, until you hit that wall, and then you realize the box is bigger than before, but you’re still in a box.