16-55 or 18-55 please help.

[Hillsideshortleg]

I have an X-T4 and shaky hands. This question may not make sense but it does in my mind. Would I be better off going with an XF16-55 which my understanding is, the F2.8 makes it a faster lens but with no OIS or a XF18-55 with F2.8-4 and built in OIS.  Also does the IBIS work in conjunction with the OIS? Or does the IBIS work well with the 16-55 and no need for the OIS

Thanks for any help.

[CatsAreGods]

The IBIS works with OIS, and it works on its own as well. I've heard that the f2.8 version is much heavier and that could make your shake problem worse. Personally if those were my only choices I would go with the OIS version (in fact, I got the 16-80 with OIS).

[Herco]

The 16-55 is about twice as heavy as the 18-55. That's a big difference on longer photo walks that will also help you to keep the 18-55 more steady. Whenever you don't really need the extra 2mm or a constant f2.8 save yourself some money and go for the 18-55. The difference in IQ between the two is marginal (I've had both). Only with really large prints you will be able to see a slight difference in sharpness in the corners. The 16-55 is a bit more 'contrasty' though, but that can be corrected in post. IMO the good ol' 18-55 has visibly better IQ than the 16-80. 

Edited February 4, 2021 by Herco

[lleo]

16-55 heavier and no OIS, constant aperture. 18-55 lighter, IOS and variable aperture
I owned both and kept the 18-55.
The quality of the 18-55 is highly superior to the 16-80 as the longer is the focal lenght, the more complicated is to keep a high level quality.