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I've got the Pana 12-32, 14-42 (non-pancake) and 14-42 PZ lenses, plus the Oly 14-42 EZ (power zoom) lens. No LX10 (or GX800 anymore), but my ZV-1 might be an interesting size comparison. I'll take some photos of the extended lenses on my GX80 with a ruler alongside. Note that of the pancake lenses, only the Oly has a focus ring, but it doesn't have any OIS - swings and roundabouts...

That's all pretty reasonable. Though at least for me, the ZV-1 works well at its widest - partly since I don't often want to film myself in extremely crowded situations. I have a mount on my dashboard with a 1/4x20 (it's on a little t-track that is made for the mounting points on a Jeep) where I can use it to film myself while driving (nearly the perfect focal length for this) and then since I'm usually going out to the middle of nowhere, there's really nobody to care that I'm there. When I put the ZV-1 on the little Sony bluetooth handle, it puts it just about 4-5 inches further from me which works out well enough for a head & shoulders shot (which is still tighter than a lot of the kids prefer, but I like it). This is an example - most of the "vlog" parts were with ZV-1 - either dash-mounted or on the handle. I think the car-mounted cameras were a Hero 9 and an Insta360 One R with 1" mod. Just about everything else including the silly thing with the Racetrack rocks at the end was on the original GFX 100. About the only thing that I'd change would be for the handle to be about 2-3" longer, to have the internal ND on the camera be another stop stronger, and for the lens OIS to be a bit better for bumpy roads (Jeeps, by design, have pretty stiff suspensions). https://www.youtube.com/watch?v=faS2uFTCZBM

Just window shopping for tiny cameras (tiny-er than the GX85) and realised I don't really care that much about the size of the camera with the lens turned off, I care about the size when I'm waving it around actually shooting footage. Comparing the LX10 with GX850+12-32mm kit lens, I think the LX10 might be longer?? The zoom ratio is only 3.0 compared to 2.66 for the 12-32, so they're almost identical lenses too. Obviously, it's smaller when closed: BUT, the LX10 lens really really extends (at least for some of its zoom range)... and (as far as I can tell) the 12-32 doesn't extend nearly as much? These are the best images I could find of the lens extended: Also, the 14-42 doesn't look much larger either: Does anyone have all these bits and can give a more definite answer? If the incognito factor is important then it might be that the GX850 and 12-32mm might be better. In fact, the LX10 might not even have much of size advantage over the GX85 with the 12-32 lens, when both are fully extended... I got a direct size comparison image and superimposed the best quality images of the two lenses extended that I could fine (the lens images are transparent so you can see the overlays - the size match is almost perfect on both). Obviously lens extension isn't everything, but in use it's potentially a factor. Members of the public are aware that the longer the lens the more zoomed it is, so anyone who is uncomfortable with the idea of being filmed from a distance might really notice such a thing.

What a fascinating project! I wish them well, but it's not exactly what I need. I do think there is a niche here, though. The competitors are: MFT - much larger in comparison Action cameras - either don't shoot in high enough bitrates or don't have a good / large enough front-facing camera or don't have the lens options Smartphones - some don't shoot in high enough bitrates but all(?) either have one focal length on the selfie-side that isn't very wide or have several on the rear but no selfie screen at all (or it's tiny) The challenge with such a system would be the crop factor and getting lenses at the wider end - it's hard enough for the S16 crop of the P2K and M2K, but this is much worse. Perhaps the competition is a smartphone plus an action camera with front-facing screen? Still not the best combo.

I just bought the Sigma 18-50mm f/2.8 for my Fujifilm, but it's also available in E-Mount. I'd rather sacrifice some range and have a smaller lens. Else there is also the Tamron 17-70mm f/2.8