topic Re: R5 w/ RF24-70 f2.8 has IBIS wobble @ 24mm? in EF & RF Lenses

R5 w/ RF24-70 f2.8 has IBIS wobble @ 24mm?

kwanfs — Wed, 05 Jan 2022 11:00:38 GMT

Hello,

I have read that the rf15-35mm has ibis wobble when zoomed out. I don't have that lens, but I got the RF24-70 and it seems it also suffers from ibis wobble at 24mm. Is this normal?

Re: R5 w/ RF24-70 f2.8 has IBIS wobble @ 24mm?

Waddizzle — Wed, 05 Jan 2022 19:52:45 GMT

What am I supposed to be looking at in the video? It looks and sounds like several seconds of handheld video, which was shot on a fairly windy night.

Re: R5 w/ RF24-70 f2.8 has IBIS wobble @ 24mm?

kwanfs — Wed, 05 Jan 2022 19:57:45 GMT

Sorry forgot to mention that part. Have a look at the buildings on the far left.

Re: R5 w/ RF24-70 f2.8 has IBIS wobble @ 24mm?

rs-eos — Wed, 05 Jan 2022 21:47:15 GMT

I don't have any equipment with IBIS (the EOS C70 uses either lens IS and/or digital stabilization), so don't have first-hand experience. I can state though that for the specific equipment itself, I'm not a fan of any non-optical solution. I do like the different rigs you can get which seem to offer much better (and sometimes superior) stabilization solutions.

Re: R5 w/ RF24-70 f2.8 has IBIS wobble @ 24mm?

Waddizzle — Thu, 06 Jan 2022 09:45:39 GMT

I saw that. It is a handheld shot. I do not see anything that strikes me as unusual. If you have Digital IS turned on, then the image may get cropped slightly.

Re: R5 w/ RF24-70 f2.8 has IBIS wobble @ 24mm?

rs-eos — Thu, 06 Jan 2022 14:16:18 GMT

While true that some stabilization systems crop the image, that's not what is being shown in the video. The buildings on the left-hand-side indeed have a wobble (jell-o) effect going on. A shaky hand-held shot no doubt causes it's own set of issues, but this is an additional problem above and beyond.

Re: R5 w/ RF24-70 f2.8 has IBIS wobble @ 24mm?

kwanfs — Thu, 06 Jan 2022 14:29:45 GMT

Yes, I don't have Digital IS turned on, just Lens IS + IBIS. Apparently, after doing some research the wobble is caused by IBIS. And it seems the majority of people who reported are using RF15-35 trying to shoot wide-angle below 20mm. I'm just trying see if my gear has problem or it's working as expected.

Re: R5 w/ RF24-70 f2.8 has IBIS wobble @ 24mm?

Waddizzle — Fri, 07 Jan 2022 11:58:41 GMT

It is shot in the dark, using a wide angle lens, possibly without any specific part of the image for a stable AF lock. Just what exactly should the IBIS be locked onto? As near as I can tell, nothing. The OP reports this only happens at the wide end of the lens, 24mm. It s working normally, IMHO.

Re: R5 w/ RF24-70 f2.8 has IBIS wobble @ 24mm?

kwanfs — Thu, 13 Jan 2022 13:50:34 GMT

This is interesting. I don't see this mentioned anywhere; but for IBIS to work it needs AF lock? How would you do that?

Re: R5 w/ RF24-70 f2.8 has IBIS wobble @ 24mm?

EngineerKyle — Wed, 13 Jul 2022 14:12:34 GMT

It's a visual catastrophe. This is an extreme example, but my RF 24-105 does this all the way up to 35mm...it seems to be that the 5-axis combined stabilization causes this issue due to the ibis being essentially too strong. AF lock has absolutely nothing to do with IBIS, so darkness shouldn't matter. IBIS uses accelerometer and Gyroscope data. Electronic IS sometimes uses the frame to analyze, but IBIS generally does not. I have had this phenomenon occur in bright conditions, even on a gimbal, so the darkness/walking might be an extreme example, but the phenomenon is a rampant problem with the IBIS that we can't disable at this time.

Re: R5 w/ RF24-70 f2.8 has IBIS wobble @ 24mm?

shadowsports — Wed, 13 Jul 2022 15:02:20 GMT

Greetings,

This has been well documented on YouTube. It was another selling point that pushed me to the R5C without reservation. People were slamming the R5C when Canon omitted ibis, but after a closer look, I realized I wasn't going to miss it. Ibis is good in many cases, but its not perfect.

Re: R5 w/ RF24-70 f2.8 has IBIS wobble @ 24mm?

EngineerKyle — Wed, 13 Jul 2022 16:41:14 GMT

The R5C is very tempting! I wish I could trade in and pay the difference, but that's not happening anytime soon. Also, the animal eye AF is really lovely on the R5 for wildlife videography.

I have also found a few workarounds for the IBIS that I've posted here:

https://community.usa.canon.com/t5/Professional-Video/R3-R5-R6-R7-IBIS-RUINS-footage-shot-at-wide-focal-lengths-I/td-p/379031

Re: R5 w/ RF24-70 f2.8 has IBIS wobble @ 24mm?

johnrmoyer — Tue, 19 Jul 2022 14:18:05 GMT

I have noticed that the EOS R5 IBIS sometimes seems to forget the focal length when the camera goes to sleep and then wakes up. Turning the camera off and back on again seems to me to fix this. IBIS with the wrong focal length causes unexpected blur in parts of the image.

The focal length is still correct in the Exif metadata, so it is only the IBIS subsystem that is failing to reinitialize some data on wake up. I hope this might be fixed in a future firmware update, but it is not a problem for me if I remember to turn the camera off and back on again when it has been sleeping.