Maybe the results of the Laowa used after the 12-35 differ depending on the focal length at which you were shooting your last picture with the 12-35. Or maybe something totally different happens. Unfortunately I do not own this lens.
Here's a very strange thing. At 8mm, the PL 8-18 has 6.6% uncorrected distortion, which is quite a lot. Yet mount the Laowa after the 8-18, & it looks excellent. No visible distortion. So no idea what causes it to be honest. Something odd going on
@Dogbert62 Yes, the distortion is clearly visible through the view finder as well. And for the RAW converters: Lightroom applies the wrong correction profile automatically and proudly informs you about it. I have not found a way to turn it of - because there is no way as I later learned from the internet. Now I am using DxO PureRAW first, it does not apply the correction profile (and btw makes your pictures much cleaner). DxO Photolab does not do it, either (I have tested the trial version). So if someone is just shooting RAW, does not do video and uses DxO - she or he has no idea what we are talking about here. In other words the wrong correction profile is not applied to the RAW data, it is just stored along with the RAW data.
I am not too surprised, that a power cycle does not reset the lens profile. A lot of things inside the body remain even when you take the battery out, individually asigned function buttons for example.
Could you please tell us what lens do you mount before you shoot with the Laowa?
So, some good news from another forum. The OP on thread "Got the Laowa 10mm f/2 -- Few Notes" states they purchased the lens from B&H and the lens has firmware version 0.5. Also the OP says they have been in touch with Laowa to confirm that the 0.5 firmware version corrects the sticky lens profile issue. Tested on a GX7, they don't see the distortion issue. No one on this thread has reported issues on the GX7 yet, but its vintage and still-camera main purpose puts it in the likely group of affected bodies.
That is, as far as I know, the first report of a new version firmware purchased from a north american retailer.
Correction, Dogbert62’s lens has version 0.5, and they haven’t had any trouble on an Olympus body.
I tried Darktable the other night, on the raw files that show the distortion after the Lumix 14mm mounting, it converts them just fine. No distortion visible at all. Without lab testing. Might experiment a bit more with DT. Something odd going on, as soon as I go to the highlight/shadows module, I get savage colour shifts.
A report to let everyone know that my 1st run with Laowa support was positive. I contacted their alias to ask about updating f/w for the 10mm f2. Aside from having to do 1-2 small email follow-ups (time zone, personnel shifts), they were helpful.
I was given an RMA and told to ship it to CRISCam in AZ. Overall, the process took ~3 weeks, longer than I hoped, but it was nice knowing they back their products. CrisCam also did a great job of not scratching a mint lens and returning it within 2 days of shipping it out.
I'm now on .5 instead of .4, which was fueled by the possibility of grabbing a used Lumix body in the future. So far, dealings with Olympus and Laowa directly have been reassuring.
Good to hear about your positive experience. I asked them recently when the user-side update would be available, and was told to watch their social media for an announcement. That was mentioned weeks ago by another user, and haven't seen anything yet, so you did the right thing to get it updated sooner than later.
Your reasons also make sense. While the lens works fine on some bodies, it wouldn't on some used Lumix bodies you may own in the future.