Greybeard

It doesn't work like this on the X-S10 or X-H2S - if you set a single ISO when not in one of the C1 settings it will switch to whatever ISO was set in C1 (including Auto ISO)

No - switching to a UHS-II card won't make a difference - its the processing time that causes the lag when using some of the Advanced Filters - not the time it takes to write to the card

Have you tried using the Fujifilm X Acquire app? Export the settings from one camera and import to the other. (I don't know for sure this works as I've never had two cameras of the same model to test)

The XT5 images are supported by Lightroom on the iPad - the only place you will see the blank square is when you are importing from the Photos app which doesn't support the XT5. Once the files are imported into Lightroom from Photos you will see them. Apple takes a long time to support new Fujifilm cameras - X-H2 isn't supported yet either (and of course compressed raws aren't supported from any Fujifilm X series camera).

No - this has recently been discussed on a different forum - its not clear what "modes" mean or which of these modes might trigger the action

On the Fujifilm firmware download site there are pdf manuals showing in detail what has changed for each release - they might be helpful in answering your questions

I configure my X-H2S so that the joystick centres the focus point - but I tend to stay in wide/area tracking with subject detection so don’t need quick access to the point/zone size.

https://fujifilm-dsc.com/en/manual/x-t5/taking_photo/autofocus/index.html#focus-frame perhaps it could have been clearer but it does say "Use the focus stick (focus lever) and rear command dial to choose a focus area." Its quite complicated because you can change the way the focus stick works by changing options in the setup menus.

My opinion (as an amateur) is that the subject detection makes the AF much better than earlier generations of Fujifilm cameras for acquiring and tracking wildlife - but it’s not magic and you still have to put some effort in - especially in those difficult situations like busy backgrounds or erratic creatures. I’m happy with my purchase - it appears well built and isn’t excessively heavy - I walk long distances with camera and a converted Canon 200/2.8. The overall speed and AF detection means I get shots I wouldn’t have in the past.

Clarity didn't arrive until X-T4

The latest firmware (released today) seems to have fixed the problem

The camera is probably in full Auto - turn the switch next to the shutter speed dial away from the Auto setting and those menu items should appear.

Any chance you have AF+M selected in the AF menu?

You can update firmware by transferring it from computer to SD card and using the card in the camera. On most recent Fujifilm cameras you can also update using a smartphone (not specifically sure about X-T2)

You can use the command dial https://digitalcamera-support-en.fujifilm.com/digitalcameraengpcdetail?aid=000005716&p=a062w0000035yPJAAY&wd=

This is an interesting question - I thought it must be in the camera manual - but it isn't (presumably all the available lenses had aperture rings when the manual was written). The lens manuals have a link that supposedly goes to the answer - but the link doesn't go to the answer. The FAQs for the X-Pro1 tell you how to do it for the X-T30. This is the closest I've found - but its badly written and the applicable footnote (*3) doesn't exist. https://digitalcamera-support-en.fujifilm.com/digitalcameraengpcdetail?aid=000004651

Looks like a bug to me - doesn't seem to affect the autofocus - I have AF Point Display set to off so hadn't noticed before.

The usual reason for a storing delay is a non-zero setting of Clarity - but as jlmphotos says more information would be useful

Maybe you accidentally nudged the white balance setting in the menu?

Interesting question - I don't have an X-T200 to test but I'd suggest you try setting the camera so that its writing a jpg only - so that you could be sure it would write to the card in under 2 seconds - if you get the same problem it would imply its something other than the buffer.

The manual is available online as pdf or html - also has the new features added by firmware that wouldn't have been available with the original manual https://fujifilm-dsc.com/en/manual/x-pro3/?_ga=2.179408423.2043135253.1668879588-1483796254.1656574248 anything you would need from a CD-ROM would also be available on the Fujifilm web site to download

Was the camera purchased from a Fujifilm authorised retailer? In the UK the situation is a bit ambiguous - it doesn't specifically say if grey imports will be accepted for paid repair: For products that are under warranty - Many countries have different warranty terms therefore we would review all warranty claims on a case-by-case basis. Please contact our support team on 0344 553 2321 or email csd_uk@fujifilm.com and a member of our team will be happy to help. For products outside of warranty - Please visit our website to book a chargeable repair. If your product was found to be purchased from a non-authorised retailer, it may be considered to be a grey import. In these cases, FUJIFILM UK reserve the right to reject the warranty.

Make sure you have Dynamic Range set to DR100 (on the second page of the Image Quality Setting menu)

Check the size of the file - even 4-5 minutes can be over 4GB which is the limit using the cable

The best way to move movies is to use a card reader. There is a limit to the size of file (4GB) that can be moved via cable - you don't say how long those videos are but it could well be the reason you are having problems.