@anti12

I didn't have any older lenses to test except the MK1 version of the 14-140 and the focus transition pulls were equally as smooth as the brand new 12-35 f2.8 MK2 and 35-100mm f2.8 MK2, so it's promising that all older lenses will perform equally in that regard. I tested 5 different lenses and the performance wasn't different between any of them as it is a controlled environment. Obviously AF speed of these lenses would be different, but since you are selecting the focus points there is no other factor than the camera itself changing the points.

@konjow I can definitely do my best, but the AF is nowhere near what the final model will be. I have tested it a bit and found it a bit better than GH4, but the final firmware is going to be way above and beyond that.

Thank you Tyler, interesting discoveries you're sharing. Like the smooth AF with the old 14-140.

When thinking of an ISO DR, noise test, I think also about how the camera compresses the video. At what shadow depths does macro blocking becomes a problem? Are there settings/ profiles that help with that? I believe this is the area where 10 bit and / or and external recorder shines.

Thank you again for testing and exploring.

I'm not sure you can have Dual IS with the old 14-140, but I'm sure it will not be Dual IS 2. Many people forget there are 2 'Dual IS' generations. So the new lenses will have the newest version of Dual IS, named Dual IS2. For the older lenses there is Dual IS 1. I'm not sure the 14-140 mk1 / mk2 will be supported for Dual IS1 or Dual IS2 (with update). Good question Nic.

@AKED

Hopefully this covers everything you were curious about! I tested every 12mm variation except for the prime!

Gimbal vs gimbal with dual is, and then handheld, and then handheld stabilized.

There's a Vimeo link in the description to download the original

@tylerknight Some more questions:

What SD cards do you use? What UHSII cards can be used? 150 MB/s or are 300 MB/s needed?

What is the filesize? In my GH4 a 4K file of 1 Minute is about 800-900 MB large. How large is a 1 Minute 4K 50/60p file of the GH5 (h264)? And in comparison a 1 Minute file in 6K file in h265?

Does it make sense, to cange an old 12-35 lens Version I to the new 12-60 2.8-4?

Thanks for the good work

I think a lot of people here wants to see which is the concrete difference between dual is v1 and dual is v2, since Panasonic "decided" not to firmware upgrade the first generation of lenses - such as the 12-35 mk1- leaving them with dual is v1 only. Testing and comparing footage of 12-35 mk1 vs mk2 on a gimbal can give us an idea, but I would suggest to do the same test with handheld shooting, if possible. So we can finally know if we can keep our beloved old lenses and take advantage of dual is as well. - edit: I saw your clip, and you did an handheld comparison. So what is your impression, is there a visible difference between dual is v1 and v2?

@konjow I knew same news, but I looked at

Ok - if I look at that list above the old 14-140/F4.0-5.8 Mk1 isn't mentioned. So, no chance for Dual IS1....!?

@davjd - thanks for the link, but what an odd way to present data. No lens in the chart has an "NG" value (Unworkable) and there is no indication of what the "-" dash means. Perhaps it means they haven't settled on a firmware version? Or that it is not workable...which is difficult to do with a single compatibility column (and two versions of DIS). Ugh.

@tylerknight Great news about the SD card and thanks for your evaluation about the lenses. Looking forward about the file sizes. Thanks for doing all the work.

For the focussing testing:

Yes, to pour it into a question:

Can you please test the different Continuous Auto Focus tuning settings? Can you compare this to other camera's? Help these settings enough to do interviews with a shallow depth of field? (like Philip Bloom has been testing).

I've heard the current firmware version is 0.5 so I wonder if this already works, or will we have to wait before this can be tested.