Image stabilization panning detection in RF lenses

Duckman21 wrote:

SigZero wrote:

Tried RF 800/f11 with R5 on airshow. This lens definitely does not have panning detection. Most of my panning shots with IS enabled have been ruined (still background with blurred subject). Disabling IS helps drastically with shutter fast enough.

Quite different results with RF 100-500 (and RF 1.4x) on R5 with IS mode set to "2". Almost all shots are sharp with correctly blurred background. Just for test switched to "1" mode with effect almost identical with RF 800.

I guess that this mode switching is much more important with IBIS as scope of sensor movement can compensate for really long panning shots - destroying them if not in mode "2". This also looks like that the only way to enable panning detection on IBIS is to have lens with that mode.

Br, Pawel.

How fast were the planes flying and were you using electronic shutter or electronic first curtain?
I've noticed with videos the panning with IS ON can be very inconsistent. Sometimes it works just fine if I am panning at a steady pace, but other times it exhibits a "stop and go" behaviour indicating the IS is working against my pan.

I was almost always using EFCS. The planes ware quite fast, around 150km/h.

I'm also getting this problem with 24-105 f/4 when using with trains with pretty slow shutter speed. With IS enabled often I got razor sharp background with blurred subject. Certainly IS in 24-105 f/4 does not have panning detection.

Generally I think that IS+IBIS on RF lenses without "2" or "3" mode is rather to be used with static subjects or subjects approaching towards camera to eliminate camera shake. If subject is in motion (and not in parallel with optical axis of the lens) then disabling IS is probably the best option to choose.

Br, Pawel.