X-T5 stabilisation with Tamron 18-300mm F/3.5-6.3 lens

[Uncleants]

I have just bought a Tamron 18-300mm F/3.5-6.3 Di III-A VC VXD B061 lens to use alongside my Fujifilm 16-80mm F4 Kit Lens.

I am finding that while image stabilisation seems to be similar for still images at equivalent focal lengths this is not the case when recording movies, where the Tamron lens shows noticeable 'shake' compared to the Fujifilm lens at equivalent focal lengths. I have set image stabilisation on the X-T5 to IBIS/OIS. I am on latest X-T5 firmware 2.03.

I have notified Tamron but meanwhile would appreciate any thoughts, advice or experiences on image stabilisation using non-Fujifilm lenses with X-T5.

By the way, I am very happy with image quality of the Tamron lens from the tests I have done so far. It's not professional quality of course, but neither am I and it saves carrying multiple lenses around when out and about.

[Astigmatism]

It's been a while, are you still dealing with this?

The camera has to know what the focal length of the lens is. It's using accelerometers to measure shaking and then shifting the sensor (and elements in the lens if it's an OIS lens) to compensate. The longer the focal length, the further things have to shift.

Does this lens tell the camera what focal length it's set for? Forgive me, I don't have any experience with putting non-Fuji zooms on the X-T5, but I'm guessing not. You can't just say it's an 18-300, either, the camera needs to know the focal length you've set it to.

You have to use MOUNT ADAPTOR SETTING  to do this.