sunset to the left, same day I shot the lighthouse above

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still playing with filters, lighthouse in Cape Henlopen State Park, Delaware.  

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snapping turtle or great white?  my wife saw this driving down the road and I shot it for fun.

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Hmmm ... The custom profile files created and stored by XRawStudio look pretty similar. The whole structure of the files is exactly the same at least for X-H1, X-T4 and a X-H2 related (so, 3 generations). Just the values for camera and serial# are (certainly) different. And features/values that do not exist for an older camera generation are left empty there. That's all. E.g. if I take a custom profile file created with XRawStudio for the X-H2, and I copy it to the X-T4 folder and just edit the camera and serial# information with a simple text editor ... this manually adjusted X-H2 custom profile perfectly works with the X-T4 inside XRawStudio. As the underlying data structure seems to be very much the same and data are considering camera differences already, it cannot be rocket science to allow XRawStudio to manage custom profiles across cameras, even across camera generations.

I had this same problem with my manual focus lens. I couldn't enable focus peaking. I thought it was a problem with the lens, and was about to give up on the lens. Then I switched the setting on my XT5 from back button focus, which I always use,  to focus with the shutter button. And lo and behold, the focus peaking worked! I have no idea why that should make a difference, but it did. So maybe that is the problem that others are facing. Anyway, it's worth a try!