[davethebirder]

Hi Dave,

I would speculate that 8 stop will work up to 50mm. I can tell you that using A7 r3 with lenses above 100mm its like there is no shake reduction at all. There might be a threshold at what point IBIS wont be effective in general. Now that we see computational photography used more and more in dedicated cameras I won't be surprised if the crop factor is applied in the process. I hope this feature is activated by choice instead of being default setting.

  Yeah, not bad, but it's it's a bit of an irony really, you can have a ton of stabilization at shorter FLs where you need it less, however for video it should be well appreciated ...... my guess is they have to throttle the IBIS back at longer FLs to prevent ludicrous amounts of sensor movement ....... it's probably to next to zero at 600mm